AdapterMusic.java 文件源码

private Drawable getDrawableByState(Context context, int state) {
    switch (state) {
        case PlaybackStateCompat.STATE_NONE:
            Drawable pauseDrawable = ContextCompat.getDrawable(context, R.drawable.ic_play);
            DrawableCompat.setTintList(pauseDrawable, colorPlay);
            return pauseDrawable;
        case PlaybackStateCompat.STATE_PLAYING:
            AnimationDrawable animation = (AnimationDrawable) ContextCompat.getDrawable(context, R.drawable.equalizer);
            DrawableCompat.setTintList(animation, colorPlay);
            animation.start();
            return animation;
        case PlaybackStateCompat.STATE_PAUSED:
            Drawable playDrawable = ContextCompat.getDrawable(context, R.drawable.equalizer);
            DrawableCompat.setTintList(playDrawable, colorPause);
            return playDrawable;
        default:
            Drawable noneDrawable = ContextCompat.getDrawable(context, R.drawable.ic_play);
            DrawableCompat.setTintList(noneDrawable, colorPlay);
            return noneDrawable;
    }
}