无限轮播

public class MainActivityextends Activity {

private ViewPager pager;
private LinearLayout line;

String[] str=new String[]{
"http://imgs.juheapi.com/comic_xin/5559b86938f275fd560ad748.jpg",
"http://imgs.juheapi.com/comic_xin/5559b87438f275fd560ae132.jpg",
"http://imgs.juheapi.com/comic_xin/5559b8de38f275fd560b06b2.jpg",
"http://imgs.juheapi.com/comic_xin/5559b87438f275fd560ae1ba.jpg"
};
private List<ImageView> list;
Handler han=new Handler(){
public void handleMessage(android.os.Message msg) {
//获得Viepage当前所在的页吗索引值
int item = pager.getCurrentItem();
item++;
pager.setCurrentItem(item);
han.sendEmptyMessageDelayed(0, 2000);
};
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
pager = (ViewPager)findViewById(R.id.pager);
line = (LinearLayout)findViewById(R.id.Line);
pager.setAdapter(new MyPagerAdapter(this,str));
//pager.setCurrentItem(str.length*5000);
inData();
setPageChange();
}
private void setPageChange() {
// TODO Auto-generated method stub
pager.setOnPageChangeListener(new OnPageChangeListener(){
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
for (int i = 0; i < list.size(); i++){
if(i==arg0%str.length ){
list.get(i).setImageResource(R.drawable.dram);
}else{
list.get(i).setImageResource(R.drawable.draw2);
}
}
}

@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
}
});
han.sendEmptyMessageDelayed(0, 2000);
}
public void inData(){
list = new ArrayList<ImageView>();
list.clear();
line.removeAllViews();
for (int i = 0; i < str.length; i++) {
ImageView imageView=new ImageView(this);
if(i==0){
imageView.setImageResource(R.drawable.dram);
}
else{
imageView.setImageResource(R.drawable.draw2);
}
LayoutParams params=new LayoutParams(15,15);
params.setMargins(5, 0, 5, 0);
list.add(imageView);
line.addView(imageView, params);
}

}

}