CompareActivity.java 文件源码

@Override
public void onWindowFocusChanged(boolean hasFocus) {
    ImageView imageViewAnimTop = (ImageView) findViewById(R.id.imageView_animation_top);
    ImageView imageViewAnimBottom = (ImageView) findViewById(R.id.imageView_animation_bottom);

    AnimationDrawable animTop = (AnimationDrawable) imageViewAnimTop.getBackground();
    AnimationDrawable animBottom = (AnimationDrawable) imageViewAnimBottom.getBackground();

    animTop.start();
    animBottom.start();

    super.onWindowFocusChanged(hasFocus);
}