Animation（2、帧动画）

<?xml version="1.0" encoding="utf-8"?>
<animation-list xmlns:android="http://schemas.android.com/apk/res/android" android:oneshot="false">
    <item android:drawable="@drawable/aboutdlg_logo" android:duration="500"/>
    <item android:drawable="@drawable/actionbar_logo" android:duration="500"/>
    <item android:drawable="@drawable/aboutdlg_logo" android:duration="500"/>
    <item android:drawable="@drawable/actionbar_logo" android:duration="500"/>
</animation-list>

public class MainActivity extends Activity {
    
    private ImageView imageView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
         
        imageView = (ImageView)findViewById(R.id.image);
        imageView.setBackgroundResource(R.anim.ani);
        AnimationDrawable animationDrawable = (AnimationDrawable)
           imageView.getBackground();
        animationDrawable.start();
    }
}