【android】自定义控件属性设置

最新推荐文章于 2023-06-08 16:57:00 发布

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#android #styleable #declare-styleable #attr

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本文深入探讨了Android中各种属性格式与样式声明的应用场景，包括引用资源、颜色、布尔值、尺寸、浮点数、整型、字符串、百分数、枚举与位或运算等。通过实例展示了如何在XML布局文件中灵活使用这些特性来定制UI元素。

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1. reference：参考某一资源ID。

<declare-styleable name = "名称">
<attr name = "background" format = "reference" />
<attr name = "src" format = "reference" />
</declare-styleable>

2. color：颜色值。

<declare-styleable name = "名称">
<attr name = "textColor" format = "color" />
</declare-styleable>

3. boolean：布尔值。

<declare-styleable name = "名称">
<attr name = "focusable" format = "boolean" />
</declare-styleable>

4. dimension：尺寸值。

<declare-styleable name = "名称">
<attr name = "layout_width" format = "dimension" />
</declare-styleable>

5. float：浮点值。

<declare-styleable name = "名称">
<attr name = "fromAlpha" format = "float" />
<attr name = "toAlpha" format = "float" />
</declare-styleable>

6. integer：整型值。

<declare-styleable name = "名称">
<attr name = "frameDuration" format="integer" />
<attr name = "framesCount" format="integer" />
</declare-styleable>

7. string：字符串。

<declare-styleable name = "名称">
<attr name = "text" format = "string" />
</declare-styleable>

8. fraction：百分数。

<declare-styleable name="名称">
<attr name = "pivotX" format = "fraction" />
<attr name = "pivotY" format = "fraction" />
</declare-styleable>

9. enum：枚举值。

<declare-styleable name="名称">
<attr name="orientation">
<enum name="horizontal" value="0" />
<enum name="vertical" value="1" />
</attr>
</declare-styleable>

10. flag：位或运算。

<declare-styleable name="名称">
<attr name="windowSoftInputMode">
<flag name = "stateUnspecified" value = "0" />
<flag name = "stateUnchanged" value = "1" />
<flag name = "stateHidden" value = "2" />
<flag name = "stateAlwaysHidden" value = "3" />
</attr>
</declare-styleable>

11.多类型

<declare-styleable name = "名称">
<attr name = "background" format = "reference|color" />
</declare-styleable>