android开发教程之卸载sd卡对MediaServer的处理

下面这段代码是android中music中的处理代码：

mediaplayer.onerrorlistener errorlistener = new mediaplayer.onerrorlistener() {
    public boolean onerror(mediaplayer mp, int what, int extra) {
        switch (what) {
        case mediaplayer.media_error_server_died:
            misinitialized = false;
            mcurrentmediaplayer.release();
            mcurrentmediaplayer = new compatmediaplayer();
            mcurrentmediaplayer.setwakemode(mediaplaybackservice.this, powermanager.partial_wake_lock);
                 mhandler.sendmessagedelayed(mhandler.obtainmessage(server_died), 2000);
            return true;
        default:
            log.d("multiplayer", "error: " + what + "," + extra);
            break;
        }
        return false;
   }
};

简单来看，就是遇到mediaserver died这种情况，就release掉原来的mediaplayer,然后重新创建一个mediaplayer（会在mediaserver重新启动后关联起来）。然后可以根据原来的状态做相应的动作。