Notification应用的复习

1、当设计音乐播放的时候发现setSmallIcon时候手机状态栏显示的是一块白板，通过查资料发现：系统把icon非透明的部分全变成白色了，原来的icon非透明的部分是黑色自动变为白色了。 

若想用黑色的状态栏可以有2种方法：

1.把App目标编译sdk版本降为4.+

2.选择白色的icon

public  void startNotification()
    {
        mSession = new MediaSession(getApplicationContext(), this.getClass().getName());
        int play = musicPlayerState == STATE_PLAY?R.drawable.pause:R.drawable.play;
        notification = new Notification.Builder(this)
                .setContentTitle("Music")
                .setContentText("她说")
                .setSmallIcon(R.drawable.ab)
                .addAction(play, "",PendingIntent.getBroadcast(this, 0,
                        new Intent().setAction("android.intent.action.paly"),0))
               .setLargeIcon(BitmapFactory.decodeResource(getResources(),R.drawable.a))
                .setStyle(new Notification.MediaStyle()
                        .setShowActionsInCompactView(0)
                        .setMediaSession(mSession.getSessionToken()))
                .build();
        startForeground(101,notification);
    }