ios - 后台播放音乐 : AVAudioSessionInterruptionNotification not fired

Question

我的应用在后台运行良好。 暂停 和播放 也运行良好，即使我的应用在后台使用为 AVAudioSessionInterruptionNotification 注册的方法。

问题到达场景的步骤:

1. 启动我的应用程序 -> 从我的应用程序开始播放背景音乐
2. 启动苹果的音乐应用程序并播放。 AVAudioSessionInterruptionNotification 已触发。
3. 当我暂停音乐应用程序或终止音乐应用程序时。 AVAudioSessionInterruptionNotification 不会被触发

代码:我在 appdelegate 中这样做。 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];

        }
    }
}

Answer 1

我在中断方面遇到了类似的问题。 iOS: Siri not available does not return AVAudioSessionInterruptionOptionShouldResume

最终改用 applicationWillResignActive 和 applicationDidBecomeActive。