导航页自动轮放图片

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////////////////////////////////////////////////////////////MainActivity///////////////////////////////////////////////////////////////////////////

public class MainActivity extends Activity {

   private ViewPager pager;
   private RadioGroup group;
   private ArrayList<View> list;
   private ViewPagerAdapter adapter;
   private Handler handler = new Handler() {
       public void handleMessage(android.os.Message msg) {
           if (msg.what == 0) {
               int currentItem = pager.getCurrentItem();

               pager.setCurrentItem(currentItem + 1);

               handler.sendEmptyMessageDelayed(0, 1000);
           }
       };
   };

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       requestWindowFeature(Window.FEATURE_NO_TITLE);
       setContentView(R.layout.activity_main);

       pager = (ViewPager) findViewById(R.id.view_pager);

       group = (RadioGroup) findViewById(R.id.group);

       list = new ArrayList<View>();

       ImageView imageView1 = new ImageView(MainActivity.this);
       imageView1.setImageResource(R.drawable.a);
       imageView1.setScaleType(ScaleType.FIT_XY);

       ImageView imageView2 = new ImageView(MainActivity.this);
       imageView2.setImageResource(R.drawable.b);
       imageView2.setScaleType(ScaleType.FIT_XY);

       ImageView imageView3 = new ImageView(MainActivity.this);
       imageView3.setImageResource(R.drawable.c);
       imageView3.setScaleType(ScaleType.FIT_XY);

       ImageView imageView4 = new ImageView(MainActivity.this);
       imageView4.setImageResource(R.drawable.d);
       imageView4.setScaleType(ScaleType.FIT_XY);

       ImageView imageView5 = new ImageView(MainActivity.this);
       imageView5.setImageResource(R.drawable.e);
       imageView5.setScaleType(ScaleType.FIT_XY);

       // VideoView videoView = new VideoView(MainActivity.this);
       // videoView.setVideoPath("/data/iToolsVMShare/miniony.mp4");

       list.add(imageView1);
       list.add(imageView2);
       list.add(imageView3);
       list.add(imageView4);
       list.add(imageView5);

       adapter = new ViewPagerAdapter(list, handler);
       pager.setAdapter(adapter);

       handler.sendEmptyMessageDelayed(0, 1000);

       pager.setCurrentItem(list.size() * 10000);

       pager.setOnPageChangeListener(new OnPageChangeListener() {

           @Override
           public void onPageSelected(int arg0) {
               // TODO Auto-generated method stub
               group.check(group.getChildAt(arg0 % list.size()).getId());
           }

           @Override
           public void onPageScrolled(int arg0, float arg1, int arg2) {
               // TODO Auto-generated method stub

           }

           @Override
           public void onPageScrollStateChanged(int arg0) {
               // TODO Auto-generated method stub

           }
       });

       // /////////////////RadioButton的点击事件//////////////////////
       // group.setOnCheckedChangeListener(new OnCheckedChangeListener() {
       //
       // @Override
       // public void onCheckedChanged(RadioGroup group, int checkedId) {
       // // TODO Auto-generated method stub
       // for (int i = 0; i < list.size(); i++) {
       // if (group.getChildAt(i).getId() == checkedId) {
       // pager.setCurrentItem(i, false);
       // }
       // }
       // }
       // });

   }

}

/////////////////////////////////////////////////////////////////////////////////////////////////Adapter//////////////////////////////////////////////////////////////////////////////////////////////

public class ViewPagerAdapter extends PagerAdapter {

   ArrayList<View> list;
   Handler handler;

   public ViewPagerAdapter(ArrayList<View> list, Handler handler) {
       // TODO Auto-generated constructor stub
       this.list = list;
       this.handler = handler;
   }

   @Override
   public int getCount() {
       // TODO Auto-generated method stub
       return Integer.MAX_VALUE;
   }

   @Override
   public boolean isViewFromObject(View arg0, Object arg1) {
       // TODO Auto-generated method stub
       return arg0 == arg1;
   }

   @Override
   public Object instantiateItem(ViewGroup container, int position) {
       // TODO Auto-generated method stub
       container.addView(list.get(position % list.size()));
       return list.get(position % list.size());
   }

   @Override
   public void destroyItem(ViewGroup container, int position, Object object) {
       // TODO Auto-generated method stub
       // super.destroyItem(container, position, object);
       container.removeView(list.get(position % list.size()));
   }
}

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