ios远程控制事件(蓝牙音箱)

最近公司在做一个关于外接蓝牙音箱的功能,上网搜索了相关资料,发现大都雷同,今天做个稍许总结:

1.利用远程控制事件- (void)remoteControlReceivedWithEvent:(UIEvent *)event方法

这个方法系统会自动调用,可以放在AppDelegate.m文件里,也可以放在相关控制器里,前提是需要设置

[[UIApplication sharedApplication] beginReceivingRemoteControlEvents],接收远程事件,

接收完毕后结束接收[[UIApplication sharedApplication] endReceivingRemoteControlEvents];

接收到远程事件如播放,停止,会调用remoteControlReceivedWithEvent:方法,利用改方法里的event参数判断是什么类型的事件:

-(void)remoteControlReceivedWithEvent:(UIEvent *)event

    if (event.type == UIEventTypeRemoteControl) {

         if (event.subtype == UIEventSubtypeRemoteControlPlay) {

              //....做一些事情.如播放

             } else if(//...){

              // ...

             }

    }

}

2.利用MPRemoteCommandCenter类

该类也会在系统接收到远程事件后被调用,前提是要添加相关事件的监听,并且该类是一个单例,如:

MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];

[commandCenter.pauseCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {

    NSLog(@"暂停事件");

    //暂停的相关事情

    return MPRemoteCommandHandlerStatusSuccess;

}];

[commandCenter.playCommand addTargetWithHandler:^MPRemoteCommandHandlerStatus(MPRemoteCommandEvent * _Nonnull event) {

    NSLog(@"播放事件");

    //播放相关事情

    return MPRemoteCommandHandlerStatusSuccess;

}];

在不用接收远程事件时要记的移除监听:

MPRemoteCommandCenter *commandCenter = [MPRemoteCommandCenter sharedCommandCenter];

[commandCenter.pauseCommand removeTarget:self];

[commandCenter.playCommand removeTarget:self];