图片的自动轮播

//布局

 <ImageView
        android:id="@+id/image_view"
        android:scaleType="fitXY"
        android:layout_width="match_parent"
        android:layout_height="200dp" />

//activity：

List<Beand.ResultBean.DataBean> l = beand.getResult().getData();for (Beand.ResultBean.DataBean s:l){    list2.add(s.getThumbnail_pic_s());}    handler.sendEmptyMessageDelayed(0,3000);ImageLoader.getInstance().displayImage(list2.get(0),img, Tutils.getDefaultOption());
//handler
Handler handler=new Handler(){    @Override    public void handleMessage(Message msg) {        if (msg.what==0){            i++;                ImageLoader.getInstance().displayImage(list2.get(i%list2.size()),img, Tutils.getDefaultOption());            handler.sendEmptyMessageDelayed(0,3000);        }    }};