摘要： 在很多音乐播放器中都会出现歌词的置顶，这种置顶是对于整个系统而言的。实现方式WindowManager wm = (WindowManager)getApplicationContext().getSystemService(WINDOW_SERVICE);//获得WindowManager WindowManager.LayoutParams params = new WindowManager.LayoutParams(); //布局参数对象 params.type = WindowManager.LayoutParams.TYPE_SYSTEM_OVER... 阅读全文