Gallery组件主要用于横向显示图像列表,不过按常规做法。Gallery组件只能有限地显示指定的图像。也就是说,如果为Gallery组件指定了10张图像,那么当Gallery组件显示到第10张时,就不会再继续显示了。这虽然在大多数时候没有什么关系,但在某些情况下,我们希望图像显示到最后一张时再重第1张开始显示,也就是循环显示。要实现这种风格的Gallery组件,就需要对Gallery的Adapter对象进行一番改进。
Gallery组件的传统用法
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在实现可循环显示图像的Gallery组件之前先来回顾一下Gallery组件的传统用法。Gallery组件可以横向显示一个图像列表,当单击当前图像的后一个图像时,这个图像列表会向左移动一格,当单击当前图像的前一个图像时,这个图像列表会向右移动一样。也可以通过拖动的方式来向左和向右移动图像列表。当前显示的是第1个图像的效果如图1所示。Gallery组件显示到最后一个图像的效果如图2所示。
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从图2可以看出,当显示到最后一个图像时,列表后面就没有图像的,这也是Gallery组件的基本显示效果。在本文后面的部分将详细介绍如何使Gallery组件显示到最后一个图像时会从第1个图像开始显示。
好了,现在我们来看一下图1和图2的效果是如何做出来的吧。Gallery既然用于显示图像,那第1步就必须要有一些图像文件用来显示。现在可以随意准备一些图像。在本文的例子中准备了15个jpg文件(item1.jpg至item15.jpg)。将这些文件都放在res/drawable目录中。
下面将这些图像的资源ID都保存在int数组中,代码如下:
{R.drawable.item1,R.drawable.item2,R.drawable.item3,
R.drawable.item4,R.drawable.item5,R.drawable.item6,
R.drawable.item7,R.drawable.item8,R.drawable.item9,
R.drawable.item10,R.drawable.item11,R.drawable.item12,
R.drawable.item13,R.drawable.item14,R.drawable.item15};
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m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 2" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 2" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 3" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 3" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 3" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 3" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 3" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 3" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 3" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 3" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 3" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 3" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 3" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 3" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 3" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
在本例的main.xml文件中配置了一个Gallery组件,代码如下:
< LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android"
android:orientation ="vertical" android:layout_width ="fill_parent"
android:layout_height ="fill_parent" >
< Gallery android:id ="@+id/gallery" android:layout_width ="fill_parent"
android:layout_height ="wrap_content" android:layout_marginTop ="30dp" />
</ LinearLayout >
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>ZH-CN</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:SpaceForUL/> <w:BalanceSingleByteDoubleByteWidth/> <w:DoNotLeaveBackslashAlone/> <w:ULTrailSpace/> <w:DoNotExpandShiftReturn/> <w:AdjustLineHeightInTable/> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 2" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 2" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 3" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 3" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 3" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 3" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 3" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 3" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 3" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 3" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 3" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 3" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 3" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 3" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 3" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
现在在onCreate方法中装载这个组件,代码如下:
{
super .onCreate(savedInstanceState);
setContentView(R.layout.main);
// 装载Gallery组件
Gallerygallery = (Gallery)findViewById(R.id.gallery);
// 创建用于描述图像数据的ImageAdapter对象
ImageAdapterimageAdapter = new ImageAdapter( this );
// 设置Gallery组件的Adapter对象
gallery.setAdapter(imageAdapter);
}
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>ZH-CN</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:SpaceForUL/> <w:BalanceSingleByteDoubleByteWidth/> <w:DoNotLeaveBackslashAlone/> <w:ULTrailSpace/> <w:DoNotExpandShiftReturn/> <w:AdjustLineHeightInTable/> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 2" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 2" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 3" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 3" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 3" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 3" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 3" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 3" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 3" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 3" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 3" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 3" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 3" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 3" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 3" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
在上面的代码中涉及到一个非常重要的类:ImageAdapter。该类是android.widget.BaseAdapter的子类,用于描述图像信息。下面先看一下这个类的完整代码。
{
int mGalleryItemBackground;
private ContextmContext;
public ImageAdapter(Contextcontext)
{
mContext = context;
// 获得Gallery组件的属性
TypedArraytypedArray = obtainStyledAttributes(R.styleable.Gallery);
mGalleryItemBackground = typedArray.getResourceId(
R.styleable.Gallery_android_galleryItemBackground, 0 );
}
// 返回图像总数
public int getCount()
{
return resIds.length;
}
public ObjectgetItem( int position)
{
return position;
}
public long getItemId( int position)
{
return position;
}
// 返回具体位置的ImageView对象
public ViewgetView( int position,ViewconvertView,ViewGroupparent)
{
ImageViewimageView = new ImageView(mContext);
// 设置当前图像的图像(position为当前图像列表的位置)
imageView.setImageResource(resIds[position]);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setLayoutParams( new Gallery.LayoutParams( 163 , 106 ));
// 设置Gallery组件的背景风格
imageView.setBackgroundResource(mGalleryItemBackground);
return imageView;
}
}
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>ZH-CN</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:SpaceForUL/> <w:BalanceSingleByteDoubleByteWidth/> <w:DoNotLeaveBackslashAlone/> <w:ULTrailSpace/> <w:DoNotExpandShiftReturn/> <w:AdjustLineHeightInTable/> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 2" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 2" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 3" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 3" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 3" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 3" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 3" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 3" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 3" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 3" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 3" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 3" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 3" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 3" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 3" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
在编写ImageAdapter类时应注意的两点:
1. 在ImageAdapter类的构造方法中获得了Gallery组件的属性信息。这些信息被定义在res/values/attrs.xml文件中,代码如下:
< resources >
< declare-styleable name ="Gallery" >
< attr name ="android:galleryItemBackground" />
</ declare-styleable >
</ resources >
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>ZH-CN</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:SpaceForUL/> <w:BalanceSingleByteDoubleByteWidth/> <w:DoNotLeaveBackslashAlone/> <w:ULTrailSpace/> <w:DoNotExpandShiftReturn/> <w:AdjustLineHeightInTable/> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" 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上面的属性信息用于设置Gallery的背景风格。
2. 在ImageAdapter类中有两个非常重要的方法:getCount和getView。其中getCount方法用于返回图像总数,要注意的是,这个总数不能大于图像的实际数(可以小于图像的实际数),否则会抛出越界异常。当Gallery组件要显示某一个图像时,就会调用getView方法,并将当前的图像索引(position参数)传入该方法。一般getView方法用于返回每一个显示图像的组件(ImageView对象)。从这一点可以看出,Gallery组件是即时显示图像的,而不是一下将所有的图像都显示出来。在getView方法中除了创建了ImageView对象,还用从resIds数组中获得了相应的图像资源ID来设置在ImageView中显示的图像。最后还设置了Gallery组件的背景显示风格。
OK,现在来运行这个程序,来回拖动图像列表,就会看到如图1和图2所示的效果了。
循环显示图像的原理
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循环显示有些类似于循环链表,最后一个结点的下一个结点又是第1个结点。循环显示图像也可以模拟这一点。
也许细心的读者从上一节实现的ImageAdapter类中会发现些什么。对!就是getView方法中的position参数和getCount方法的关系。position参数的值是不可能超过getCount方法返回的值的,也就是说,position参数值的范围是0至getCount() - 1。
如果这时Gallery组件正好显示到最后一个图像,position参数值正好为getCount() - 1。那么我们如何再让Gallery显示下一个图像呢?也就是说让position参数值再增1,对!将getCount()方法的返回值也增1。
那么这里还有一个问题,如果position参数值无限地增加,就意味着resIds数组要不断地增大,这样会大大消耗系统的资源。想到这,就需要解决两个问题:既要position不断地增加,又让resIds数组中保存的图像资源ID是有限的,该怎么做呢?对于getCount()方法非常好解决,可以让getCount方法返回一个很大的数,例如,Integer.MAX_VALUE。这时position参数值就可以随着Gallery组件的图像不断向前移动而增大。现在resIds数组只有15个元素,如果position的值超过数组边界,要想继续循环取得数组中的元素(也就是说,当position的值是15时,取resIds数组的第0个元素,是16时取第1个元素),最简单的方法就是取余,代码如下:
resIds[position % resIds.length]
在本节对ImageAdapter类做了如下两个改进:
1. 使getCount方法返回一个很大的值。建议返回Integer.MAX_VALUE。
2. 在getView方法中通过取余来循环取得resIds数组中的图像资源ID。
通过上面两点改进,可以使图像列表在向右移动时会循环显示图像。当然,这种方法从本质上说只是伪循环,也就是说,如果真把图像移动到getCount方法返回的值那里,那也就显示到最后一个图像的。不过在这里getCount方法返回的是Integer.MAX_VALUE,这个值超过了20亿,除非有人真想把图像移动到第20亿的位置,否则Gallery组件看着就是一个循环显示图像的组件。
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在本节将组出与循环显示图像相关的ImageAdapter类的完整代码。读者可以从中看到上一节介绍的两点改进。为了使界面看上去更丰满,本例还在单击某一个Gallery组件中的图像时在下方显示一个放大的图像(使用ImageSwitcher组件)。本例的显示效果如图3所示。当不断向后移动图像时,图像可不断显示,读者可以自己运行本例来体验一下。

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Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style> <!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
在main.xml文件中定义的Gallery和ImageSwitcher组件的代码如下:
< LinearLayout xmlns:android ="http://schemas.android.com/apk/res/android"
android:orientation ="vertical" android:layout_width ="fill_parent"
android:layout_height ="fill_parent" >
< Gallery android:id ="@+id/gallery" android:layout_width ="fill_parent"
android:layout_height ="wrap_content" android:layout_marginTop ="30dp" />
< ImageSwitcher android:id ="@+id/imageswitcher"
android:layout_width ="fill_parent" android:layout_height ="wrap_content"
android:layout_marginTop ="30dp" />
</ LinearLayout >
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="ProgId" content="Word.Document"><meta name="Generator" content="Microsoft Word 12"><meta name="Originator" content="Microsoft Word 12"><link rel="File-List" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_filelist.xml"><link rel="themeData" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_themedata.thmx"><link rel="colorSchemeMapping" href="file:///C:%5CUsers%5CADMINI%7E1%5CAppData%5CLocal%5CTemp%5Cmsohtmlclip1%5C01%5Cclip_colorschememapping.xml"><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves/> <w:TrackFormatting/> <w:PunctuationKerning/> <w:DrawingGridVerticalSpacing>7.8 磅</w:DrawingGridVerticalSpacing> <w:DisplayHorizontalDrawingGridEvery>0</w:DisplayHorizontalDrawingGridEvery> <w:DisplayVerticalDrawingGridEvery>2</w:DisplayVerticalDrawingGridEvery> <w:ValidateAgainstSchemas/> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF/> <w:LidThemeOther>EN-US</w:LidThemeOther> <w:LidThemeAsian>ZH-CN</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:SpaceForUL/> <w:BalanceSingleByteDoubleByteWidth/> <w:DoNotLeaveBackslashAlone/> <w:ULTrailSpace/> <w:DoNotExpandShiftReturn/> <w:AdjustLineHeightInTable/> <w:BreakWrappedTables/> <w:SnapToGridInCell/> <w:WrapTextWithPunct/> <w:UseAsianBreakRules/> <w:DontGrowAutofit/> <w:SplitPgBreakAndParaMark/> <w:DontVertAlignCellWithSp/> <w:DontBreakConstrainedForcedTables/> <w:DontVertAlignInTxbx/> <w:Word11KerningPairs/> <w:CachedColBalance/> <w:UseFELayout/> </w:Compatibility> <w:BrowserLevel>MicrosoftInternetExplorer4</w:BrowserLevel> <m:mathPr> <m:mathFont m:val="Cambria Math" /> <m:brkBin m:val="before" /> <m:brkBinSub m:val="--" /> <m:smallFrac m:val="off" /> <m:dispDef/> <m:lMargin m:val="0" /> <m:rMargin m:val="0" /> <m:defJc m:val="centerGroup" /> <m:wrapIndent m:val="1440" /> <m:intLim m:val="subSup" /> <m:naryLim m:val="undOvr" /> </m:mathPr></w:WordDocument> </xml><![endif]--><!--[if gte mso 9]><xml> <w:LatentStyles deflockedstate="false" defunhidewhenused="true" defsemihidden="true" defqformat="false" defpriority="99" latentstylecount="267"> <w:LsdException locked="false" priority="0" semihidden="false" unhidewhenused="false" qformat="true" name="Normal" /> <w:LsdException locked="false" priority="9" semihidden="false" unhidewhenused="false" qformat="true" name="heading 1" /> <w:LsdException locked="false" priority="0" qformat="true" name="heading 2" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 3" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 4" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 5" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 6" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 7" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 8" /> <w:LsdException locked="false" priority="9" qformat="true" name="heading 9" /> <w:LsdException locked="false" priority="39" name="toc 1" /> <w:LsdException locked="false" priority="39" name="toc 2" /> <w:LsdException locked="false" priority="39" name="toc 3" /> <w:LsdException locked="false" priority="39" name="toc 4" /> <w:LsdException locked="false" priority="39" name="toc 5" /> <w:LsdException locked="false" priority="39" name="toc 6" /> <w:LsdException locked="false" priority="39" name="toc 7" /> <w:LsdException locked="false" priority="39" name="toc 8" /> <w:LsdException locked="false" priority="39" name="toc 9" /> <w:LsdException locked="false" priority="35" qformat="true" name="caption" /> <w:LsdException locked="false" priority="10" semihidden="false" unhidewhenused="false" qformat="true" name="Title" /> <w:LsdException locked="false" priority="1" name="Default Paragraph Font" /> <w:LsdException locked="false" priority="11" semihidden="false" unhidewhenused="false" qformat="true" name="Subtitle" /> <w:LsdException locked="false" priority="22" semihidden="false" unhidewhenused="false" qformat="true" name="Strong" /> <w:LsdException locked="false" priority="20" semihidden="false" unhidewhenused="false" qformat="true" name="Emphasis" /> <w:LsdException locked="false" priority="59" semihidden="false" unhidewhenused="false" name="Table Grid" /> <w:LsdException locked="false" unhidewhenused="false" name="Placeholder Text" /> <w:LsdException locked="false" priority="1" semihidden="false" unhidewhenused="false" qformat="true" name="No Spacing" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 1" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 1" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 1" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 1" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 1" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 1" /> <w:LsdException locked="false" unhidewhenused="false" name="Revision" /> <w:LsdException locked="false" priority="34" semihidden="false" unhidewhenused="false" qformat="true" name="List Paragraph" /> <w:LsdException locked="false" priority="29" semihidden="false" unhidewhenused="false" qformat="true" name="Quote" /> <w:LsdException locked="false" priority="30" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Quote" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 1" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 1" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 1" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 1" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 1" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 1" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 1" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 1" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 2" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 2" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 2" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 2" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 2" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 2" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 2" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 2" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 2" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 2" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 2" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 2" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 2" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 2" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 3" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 3" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 3" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 3" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 3" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 3" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 3" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 3" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 3" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 3" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 3" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 3" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 3" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 3" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 4" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 4" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 4" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 4" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 4" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 4" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 4" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 4" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 4" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 4" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 4" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 4" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 4" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 4" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 5" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 5" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 5" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 5" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 5" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 5" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 5" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 5" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 5" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 5" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 5" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 5" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 5" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 5" /> <w:LsdException locked="false" priority="60" semihidden="false" unhidewhenused="false" name="Light Shading Accent 6" /> <w:LsdException locked="false" priority="61" semihidden="false" unhidewhenused="false" name="Light List Accent 6" /> <w:LsdException locked="false" priority="62" semihidden="false" unhidewhenused="false" name="Light Grid Accent 6" /> <w:LsdException locked="false" priority="63" semihidden="false" unhidewhenused="false" name="Medium Shading 1 Accent 6" /> <w:LsdException locked="false" priority="64" semihidden="false" unhidewhenused="false" name="Medium Shading 2 Accent 6" /> <w:LsdException locked="false" priority="65" semihidden="false" unhidewhenused="false" name="Medium List 1 Accent 6" /> <w:LsdException locked="false" priority="66" semihidden="false" unhidewhenused="false" name="Medium List 2 Accent 6" /> <w:LsdException locked="false" priority="67" semihidden="false" unhidewhenused="false" name="Medium Grid 1 Accent 6" /> <w:LsdException locked="false" priority="68" semihidden="false" unhidewhenused="false" name="Medium Grid 2 Accent 6" /> <w:LsdException locked="false" priority="69" semihidden="false" unhidewhenused="false" name="Medium Grid 3 Accent 6" /> <w:LsdException locked="false" priority="70" semihidden="false" unhidewhenused="false" name="Dark List Accent 6" /> <w:LsdException locked="false" priority="71" semihidden="false" unhidewhenused="false" name="Colorful Shading Accent 6" /> <w:LsdException locked="false" priority="72" semihidden="false" unhidewhenused="false" name="Colorful List Accent 6" /> <w:LsdException locked="false" priority="73" semihidden="false" unhidewhenused="false" name="Colorful Grid Accent 6" /> <w:LsdException locked="false" priority="19" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Emphasis" /> <w:LsdException locked="false" priority="21" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Emphasis" /> <w:LsdException locked="false" priority="31" semihidden="false" unhidewhenused="false" qformat="true" name="Subtle Reference" /> <w:LsdException locked="false" priority="32" semihidden="false" unhidewhenused="false" qformat="true" name="Intense Reference" /> <w:LsdException locked="false" priority="33" semihidden="false" unhidewhenused="false" qformat="true" name="Book Title" /> <w:LsdException locked="false" priority="37" name="Bibliography" /> <w:LsdException locked="false" priority="39" qformat="true" name="TOC Heading" /> </w:LatentStyles> </xml><![endif]--><style> <!-- /* Font Definitions */ @font-face {font-family:宋体; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-alt:SimSun; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} @font-face {font-family:"Cambria Math"; panose-1:2 4 5 3 5 4 6 3 2 4; mso-font-charset:0; mso-generic-font-family:roman; mso-font-pitch:variable; mso-font-signature:-1610611985 1107304683 0 0 415 0;} @font-face {font-family:"/@宋体"; panose-1:2 1 6 0 3 1 1 1 1 1; mso-font-charset:134; mso-generic-font-family:auto; mso-font-pitch:variable; mso-font-signature:3 680460288 22 0 262145 0;} /* Style Definitions */ p.MsoNormal, li.MsoNormal, div.MsoNormal {mso-style-unhide:no; mso-style-qformat:yes; mso-style-parent:""; margin:0cm; margin-bottom:.0001pt; text-align:justify; text-justify:inter-ideograph; line-height:125%; mso-pagination:none; font-size:10.5pt; mso-bidi-font-size:12.0pt; font-family:"Times New Roman","serif"; mso-fareast-font-family:宋体; mso-font-kerning:1.0pt;} .MsoChpDefault {mso-style-type:export-only; mso-default-props:yes; font-size:10.0pt; mso-ansi-font-size:10.0pt; mso-bidi-font-size:10.0pt; mso-ascii-font-family:"Times New Roman"; mso-fareast-font-family:宋体; mso-hansi-font-family:"Times New Roman"; mso-font-kerning:0pt;} /* Page Definitions */ @page {mso-page-border-surround-header:no; mso-page-border-surround-footer:no;} @page WordSection1 {size:612.0pt 792.0pt; margin:72.0pt 90.0pt 72.0pt 90.0pt; mso-header-margin:36.0pt; mso-footer-margin:36.0pt; mso-paper-source:0;} div.WordSection1 {page:WordSection1;} --> </style><!--[if gte mso 10]> <style> /* Style Definitions */ table.MsoNormalTable {mso-style-name:普通表格; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0cm 5.4pt 0cm 5.4pt; mso-para-margin:0cm; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.5pt; mso-bidi-font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:宋体; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi; mso-font-kerning:1.0pt;} </style> <![endif]-->
本例中Main类的完整代码如下:
import android.app.Activity;
import android.content.Context;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.Gallery.LayoutParams;
import android.widget.ViewSwitcher.ViewFactory;
public class Main extends Activity implements OnItemSelectedListener,
ViewFactory
{
private Gallerygallery;
private ImageSwitcherimageSwitcher;
private ImageAdapterimageAdapter;
private int []resIds = new int []
{R.drawable.item1,R.drawable.item2,R.drawable.item3,R.drawable.item4,
R.drawable.item5,R.drawable.item6,R.drawable.item7,
R.drawable.item8,R.drawable.item9,R.drawable.item10,
R.drawable.item11,R.drawable.item12,R.drawable.item13,
R.drawable.item14,R.drawable.item15};
public class ImageAdapter extends BaseAdapter
{
int mGalleryItemBackground;
private ContextmContext;
public ImageAdapter(Contextcontext)
{
mContext = context;
TypedArraytypedArray = obtainStyledAttributes(R.styleable.Gallery);
mGalleryItemBackground = typedArray.getResourceId(
R.styleable.Gallery_android_galleryItemBackground, 0 );
}
// 第1点改进,返回一个很大的值,例如,Integer.MAX_VALUE
public int getCount()
{
return Integer.MAX_VALUE;
}
public ObjectgetItem( int position)
{
return position;
}
public long getItemId( int position)
{
return position;
}
public ViewgetView( int position,ViewconvertView,ViewGroupparent)
{
ImageViewimageView = new ImageView(mContext);
// 第2点改进,通过取余来循环取得resIds数组中的图像资源ID
imageView.setImageResource(resIds[position % resIds.length]);
imageView.setScaleType(ImageView.ScaleType.FIT_XY);
imageView.setLayoutParams( new Gallery.LayoutParams( 163 , 106 ));
imageView.setBackgroundResource(mGalleryItemBackground);
return imageView;
}
}
@Override
public void onItemSelected(AdapterView <?> parent,Viewview, int position, long id)
{
// 选中Gallery中某个图像时,在ImageSwitcher组件中放大显示该图像
imageSwitcher.setImageResource(resIds[position % resIds.length]);
}
@Override
public void onNothingSelected(AdapterView <?> parent)
{
}
@Override
// ImageSwitcher组件需要这个方法来创建一个View对象(一般为ImageView对象)
// 来显示图像
public ViewmakeView()
{
ImageViewimageView = new ImageView( this );
imageView.setBackgroundColor( 0xFF000000 );
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
imageView.setLayoutParams( new ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
return imageView;
}
@Override
public void onCreate(BundlesavedInstanceState)
{
super .onCreate(savedInstanceState);
setContentView(R.layout.main);
gallery = (Gallery)findViewById(R.id.gallery);
imageAdapter = new ImageAdapter( this );
gallery.setAdapter(imageAdapter);
gallery.setOnItemSelectedListener( this );
imageSwitcher = (ImageSwitcher)findViewById(R.id.imageswitcher);
// 设置ImageSwitcher组件的工厂对象
imageSwitcher.setFactory( this );
// 设置ImageSwitcher组件显示图像的动画效果
imageSwitcher.setInAnimation(AnimationUtils.loadAnimation( this ,
android.R.anim.fade_in));imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation( this ,
android.R.anim.fade_out));
}
}
总结
在本文介绍了如何实现可循环显示的Gallery组件。实际上,这个循环显示只是一个伪循环,不过由于getCount方法返回的图像总数很大(超过20亿),这就意味着已经非常接近无限循环了。实现循环显示图像的关键点有如下两个:
1. getCount方法返回一个很大的整数值(例如,Integer.MAX_VALUE)。
2. 在getView方法中通过取余的方法来循环获得图像的资源ID。
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