在后台播放音乐：AVAudioSessionInterruptionNotification未被触发 [英] Playing music at back ground: AVAudioSessionInterruptionNotification not fired

问题描述

我的应用正在背景中播放。 暂停和播放也可以正常运行，即使我的应用是后台使用<$注册的方法c $ c> AVAudioSessionInterruptionNotification 。

My app is playing in background well. Pause and play also works well even my app is background using the methods registered for AVAudioSessionInterruptionNotification.

问题到达方案的步骤：

1. 启动我的应用程序 - >从我的应用程序中播放背景音乐


2. 启动Apple的音乐应用程序并播放。 AVAudioSessionInterruptionNotification已解雇。


3. 当我暂停音乐应用或杀死音乐应用时。 AVAudioSessionInterruptionNotification不会被解雇

1. Launch my app -> goes background music from my app playing well
2. launch apple's music app and play. AVAudioSessionInterruptionNotification fired.
3. When i pause the music app or kill the music app. AVAudioSessionInterruptionNotification doesn't get fired

代码：
我在中这样做的appdelegate 即可。 didfinishlaunching

NSError *sessionError = nil;
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:&sessionError];
[[AVAudioSession sharedInstance] setActive:YES error: nil];

self.player = [[AVQueuePlayer alloc] initWithURL:[NSURL URLWithString:@"http://someurl.com:8040/;stream.mp3"]];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAudioSessionEvent:) name:AVAudioSessionInterruptionNotification object:nil];




- (void) onAudioSessionEvent: (NSNotification *) notification
{
    //Check the type of notification, especially if you are sending multiple AVAudioSession events here
    NSLog(@"Interruption notification name %@", notification.name);

    if ([notification.name isEqualToString:AVAudioSessionInterruptionNotification]) {
        NSLog(@"Interruption notification received %@!", notification);

        //Check to see if it was a Begin interruption
        if ([[notification.userInfo valueForKey:AVAudioSessionInterruptionTypeKey] isEqualToNumber:[NSNumber numberWithInt:AVAudioSessionInterruptionTypeBegan]]) {
            NSLog(@"Interruption began!");

        } else if([[notification.userInfo valueForKey:AVAudioSessionInterruptionTypeKey] isEqualToNumber:[NSNumber numberWithInt:AVAudioSessionInterruptionTypeEnded]]){
            NSLog(@"Interruption ended!");
            //Resume your audio
            NSLog(@"Player status %i", self.player.status);
            // Resume playing the audio.
            [self.player play];

        }
    }
}

推荐答案

尝试添加对象：session

Try to add object:session

[[NSNotificationCenter defaultCenter] addObserver：self
selector： @selector（onAudioSessionEvent :)
name：AVAudioSessionInterruptionNotification object：[AVAudioSession
sharedInstance]];

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(onAudioSessionEvent:) name:AVAudioSessionInterruptionNotification object:[AVAudioSession sharedInstance]];

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