ViewPagerIndicator

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最新推荐文章于 2024-11-07 16:09:40 发布

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本博客介绍了一个与Android支持库和ActionBar Sherlock兼容的指示器库，用于指示ViewPager中的相邻页面。提供了五种样式，包括标题指示器、滚动动画选项卡指示器、圆形指示器、线条指示器和下划线指示器，帮助用户清晰地了解可以导航到的额外内容。

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http://viewpagerindicator.com/

Introduction

Paging indicator widgets compatible with the ViewPager from the Android Support Library and ActionBarSherlock. Originally based on Patrik Åkerfeldt's ViewFlow.

When using the ViewPager widget it is not always obvious to the user that there are adjacent views they can navigate to. By implementing this widget you provide a clear indicator that there exists additional content which they can click or swipe to see.

At present there are five styles of indicators which can be used:

Title Indicator

Displays the title of the selected page in the center with the titles of the adjacent pages (if available) in a more subtle style.

Tab Indicator

Similar to the title indicator but displays as many titles as possible in scrolling and animated horizontal tabs.

Circle Indicator

Simple indication of the number of pages available in the pager with a separate drawing style for the currently selected page.

Line Indicator

Similar to the circle indicator but draws a very subtle line for each page with a separate drawing style for the current page.

Underline Indicator

Mimics the indicator on the Ice Cream Sandwich application launcher with a fading line the moves with each page.

Download

Version 2.3.1 — 2012-05-19

Download ZIP Download TGZ

Change Log

New LinePageIndicator! Draws small indicators lines much like the circle indicator but much more subtle.
New UnderlinePageIndicator! Acts like the indicator on the Ice Cream Sandwich application launcher.
Circle indicator now uses android:orientation rather than custom attribute.
Title indicator adapter callback now uses the standard getPageTitle(int) method introduced in the r6 version of the support library.
Title indicator now uses android:textSize and android:textColor in its styles.
Fix: Do not create objects in drawing, layout, or measurement steps of each indicator.
Fix: Improve offset detection when page margins are in use on the pager.
Maven: The dependency on the support library is now using an artifact from central rather than requiring you to deploy your own locally

Looking for an older version? Check here.

Try out the sample application:

Usage

Include one of the widgets in your view. This should usually be placed adjacent to the ViewPager it represents.

<com.viewpagerindicator.TitlePageIndicator
	android:id="@+id/titles"
	android:layout_height="wrap_content"
	android:layout_width="fill_parent" />

In your onCreate method (or onCreateView for a fragment), bind the indicator to the ViewPager.

//Set the pager with an adapter
ViewPager pager = (ViewPager)findViewById(R.id.pager);
pager.setAdapter(new TestAdapter(getSupportFragmentManager()));

//Bind the title indicator to the adapter
TitlePageIndicator titleIndicator = (TitlePageIndicator)findViewById(R.id.titles);
titleIndicator.setViewPager(pager);

(Optional) If you use an OnPageChangeListener with your view pager you should set it in the indicator rather than on the pager directly.
```
//continued from above
titleIndicator.setOnPageChangeListener(mPageChangeListener);
```

For more examples please take a look at the source code to the samples.

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