Android 为 viewpager 添加了圆形指示器
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原文地址: http://stackoverflow.com/questions/11486218/
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Android added circle indicator to viewpager
提问by Luke Batley
Hi i have created a view pager but does anyone know how i can show circles that represent pagination on a page view i think its clued an indicator but i'm not entirely sure?
嗨，我创建了一个视图寻呼机，但有谁知道我如何在页面视图上显示代表分页的圆圈，我认为它包含一个指示器，但我不完全确定？
heres the code so far that contains my view pager
继承人到目前为止包含我的视图寻呼机的代码
public class LevelSelect extends Activity {
private ViewPager awesomePager;
private static int NUM_AWESOME_VIEWS = 10;
private Context cxt;
private AwesomePagerAdapter awesomeAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_levelselect);
cxt = this;
awesomeAdapter = new AwesomePagerAdapter();
awesomePager = (ViewPager) findViewById(R.id.viewpager);
awesomePager.setAdapter(awesomeAdapter);
}
private class AwesomePagerAdapter extends PagerAdapter{
@Override
public int getCount() {
return NUM_AWESOME_VIEWS;
}
@Override
public Object instantiateItem(View collection, int position) {
LayoutInflater mLayoutInflater = (LayoutInflater) collection.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
final View LeagueButtonView = mLayoutInflater.inflate(R.layout.ls_button, null);
Button LeagueButton = (Button) LeagueButtonView.findViewById(R.id.league);
LeagueButton.setBackgroundDrawable(getResources().getDrawable(R.drawable.ls_level_eng1_locked));
((ViewPager) collection).addView(LeagueButtonView,0);
return LeagueButtonView;
}
@Override
public void destroyItem(View collection, int position, Object view) {
((ViewPager) collection).removeView((View) view);
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view==((View)object);
}
@Override
public void finishUpdate(View arg0) {}
@Override
public void restoreState(Parcelable arg0, ClassLoader arg1) {}
@Override
public Parcelable saveState() {
return null;
}
@Override
public void startUpdate(View arg0) {}
}
回答by K_Anas
You can use Jake Wharton's ViewPagerIndicator to add the titles or simple circles for each tab in your ViewPager.
您可以使用 Jake Wharton 的 ViewPagerIndicator 为 ViewPager 中的每个选项卡添加标题或简单的圆圈。
Jake Wharton has supplied a bunch of sample code on GitHub, you can also refer to the usage sectionon the Jake Wharton's site.
Jake Wharton 在GitHub 上提供了一堆示例代码，您也可以参考Jake Wharton 站点上的使用部分。
You can also use the ViewPager and PageIndicator of Greendroid library
您还可以使用Greendroid 库的 ViewPager 和 PageIndicator
回答by Nirmal Dhara
Take two image(circle or any other shape image one for off another for on). Take one frame layout, show the image(indicator) on frame.When user change the image show the proper indicator.
拍摄两张图像（圆形或任何其他形状的图像，一个用于关闭另一个用于打开）。采取一帧布局，在框架上显示图像（指示器）。当用户更改图像时显示适当的指示器。
I have implemented this and working fine. You can downloadthe code and change accordingly.
我已经实现了这个并且工作正常。您可以下载代码并进行相应更改。
