Android实现自动播放图片功能

package com.example.week4_day4_viewpager2; 
 
import java.util.ArrayList; 
import java.util.List; 
 
import android.R.integer; 
import android.os.Bundle; 
import android.os.Handler; 
import android.app.Activity; 
import android.support.v4.view.ViewPager; 
import android.view.Menu; 
import android.widget.ImageView; 
 
public class MainActivity extends Activity { 
 
  private ViewPager viewPager; 
  // 数据源 
  private int[] images = { R.drawable.image1, R.drawable.image2, 
      R.drawable.image3 }; 
  // 存放数据源的集合 
  List list; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    viewPager = (ViewPager) findViewById(R.id.viewpager); 
    // 实例化list 
    list = new ArrayList(); 
    for (int i = 0; i 

package com.example.week4_day4_viewpager2; 
 
import java.util.List; 
 
import android.content.Context; 
import android.support.v4.view.PagerAdapter; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ImageView; 
 
public class MyViewPagerAdapter extends PagerAdapter{ 
 
  private Context context; 
  private List list; 
   
  public MyViewPagerAdapter(Context context, List list) { 
    super(); 
    this.cOntext= context; 
    this.list = list; 
  } 
 
  @Override 
  public int getCount() { 
    // TODO Auto-generated method stub 
    return Integer.MAX_VALUE;//设置viewPager里有N条数据 
    //return list.size(); 
  } 
   
  @Override 
  public Object instantiateItem(ViewGroup container, int position) { 
    //假设有3张照片,走到id=2时,走id=0的,所以取余 
    container.addView(list.get(position%list.size())); 
    return list.get(position%list.size()); 
    //return list.get(position); 
  } 
  @Override 
  public void destroyItem(ViewGroup container, int position, Object object) { 
    // TODO Auto-generated method stub 
    container.removeView(list.get(position%list.size())); 
    //container.removeView(list.get(position)); 
    //super.destroyItem(container, position, object); 
  } 
 
  @Override 
  public boolean isViewFromObject(View arg0, Object arg1) { 
    // TODO Auto-generated method stub 
    return arg0==arg1; 
  } 
 
}