MusicUtils.java 文件源码

public static void animate(final ImageView imageView, Drawable drawable1, Drawable drawable2) {
    Drawable[] layers = new Drawable[2];
    layers[0] = drawable1;
    layers[1] = drawable2;

    TransitionDrawable transitionDrawable = new TransitionDrawable(layers);
    imageView.setImageDrawable(transitionDrawable);
    transitionDrawable.startTransition(5000);
}