Ios AVplayer在来电后恢复

我正在使用

AVPlayer

播放音乐。我的问题是，接到来电后，播放机无法恢复。当来电时，我如何处理此问题？

当中断开始和结束时，音频会话将发送通知。看

---

从iOS 6开始，您必须处理

AVAudioSessionInterruptionNotification

和

AVAudioSessionMediaServicesWereResetNotification

，在此之前，您必须使用委托方法

首先，您应该调用AVAudioSession singleton并将其配置为所需的用途

例如：

AVAudioSession *aSession = [AVAudioSession sharedInstance];
[aSession setCategory:AVAudioSessionCategoryPlayback
          withOptions:AVAudioSessionCategoryOptionAllowBluetooth 
                error:&error];
[aSession setMode:AVAudioSessionModeDefault error:&error];
[aSession setActive: YES error: &error];

然后，您应该为AVAudioSession将调用的通知实现两种方法：

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(handleAudioSessionInterruption:)
                                             name:AVAudioSessionInterruptionNotification
                                           object:aSession];

第一种是针对因来电、闹钟等而被呼叫的任何中断

[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(handleMediaServicesReset)
                                             name:AVAudioSessionMediaServicesWereResetNotification
                                           object:aSession];

第二个问题如果媒体服务器因任何原因重置，您应该处理此通知以重新配置音频或进行任何整理。顺便说一下，通知字典不会包含任何对象

以下是处理回放中断的示例：

- (void)handleAudioSessionInterruption:(NSNotification*)notification {

    NSNumber *interruptionType = [[notification userInfo] objectForKey:AVAudioSessionInterruptionTypeKey];
    NSNumber *interruptionOption = [[notification userInfo] objectForKey:AVAudioSessionInterruptionOptionKey];

    switch (interruptionType.unsignedIntegerValue) {
        case AVAudioSessionInterruptionTypeBegan:{
            // • Audio has stopped, already inactive
            // • Change state of UI, etc., to reflect non-playing state
        } break;
        case AVAudioSessionInterruptionTypeEnded:{
            // • Make session active
            // • Update user interface
            // • AVAudioSessionInterruptionOptionShouldResume option
            if (interruptionOption.unsignedIntegerValue == AVAudioSessionInterruptionOptionShouldResume) {
                // Here you should continue playback.
                [player play];
            }
        } break;
        default:
            break;
    }
}

请注意，当可选值为

avaudiosessioninterruptionoptions shouldResume

对于其他通知，您应注意以下事项：

- (void)handleMediaServicesReset {
// • No userInfo dictionary for this notification
// • Audio streaming objects are invalidated (zombies)
// • Handle this notification by fully reconfiguring audio
}

---

问候。

在某些情况下，即使我调用

play（）

，我的

AVPlayer

也不会继续播放。只有重新加载播放器可以帮助我解决问题：

    func interruptionNotification(_ notification: Notification) {
    guard let type = notification.userInfo?[AVAudioSessionInterruptionTypeKey] as? UInt,
      let interruption = AVAudioSessionInterruptionType(rawValue: type) else {
        return
    }
    if interruption == .ended && playerWasPlayingBeforeInterruption {
      player.replaceCurrentItem(with: AVPlayerItem(url: radioStation.url))
      play()
    }
  }

---

我得等2秒钟才能让它工作

        DispatchQueue.main.asyncAfter(deadline: .now() + 2) {

            self.player.play()
        }

整个职能：

func playerInterruption(notification: NSNotification) {

    guard let userInfo = notification.userInfo,
        let typeValue = userInfo[AVAudioSessionInterruptionTypeKey] as? UInt,
        let type = AVAudioSessionInterruptionType(rawValue: typeValue) else {
            return
    }
    if type == .began {
        // Interruption began, take appropriate actions (save state, update user interface)
        player.pause()
    }
    else if type == .ended {

        guard let optionsValue =
            userInfo[AVAudioSessionInterruptionOptionKey] as? UInt else {

                return
        }
        let options = AVAudioSessionInterruptionOptions(rawValue: optionsValue)
        if options.contains(.shouldResume) {
            // Interruption Ended - playback should resume

            DispatchQueue.main.asyncAfter(deadline: .now() + 2) {

                self.player.play()
            }

        }
    }
}

---

我在“AVAudioPlayer”控制器中遇到了同样的问题。使用“AVAudioSession.interruptionNotification”，我们可以在中断结束后恢复音频播放，即使音频在后台播放

    @objc func interruptionNotification(notification: Notification) {
    guard let type = notification.userInfo?[AVAudioSessionInterruptionTypeKey] as? UInt,
        let interruption = AVAudioSession.InterruptionType(rawValue: type) else {
            return
    }

    if interruption == .began{
        print("Pause audio....")
        self.player?.pause()
        do {
            try AVAudioSession.sharedInstance().setActive(false)
            print("AVAudioSession is inactive")
        } catch let error as NSError {
            print(error.localizedDescription)
        }
    }

    if interruption == .ended{
        print("Play audio....")
        do {
            try AVAudioSession.sharedInstance().setActive(true)
            print("AVAudioSession is Active again")
            self.player?.play()
        } catch let error as NSError {
            print(error.localizedDescription)
        }
    }
}

---

在这里，首先需要在中断时禁用AVAudioSession，在中断结束后激活AVAudioSession。它工作得很好，请试一试

各位读者好。想与

AVAudioSessionInterruptionNotification

分享我的经验吗。这让我发疯。我花了一天时间来寻找解决办法。我尝试了上面写的所有东西，但没有任何帮助。iOS 13.2.3。因此，由于某些原因，此通知无法与

AVAudioSessionCategoryPlayback

一起正常工作。对我来说，修复方法就是将其替换为

AVAudioSessionCategoryPlayAndRecord

，我开始收到

avaudiosessioninterruptiontyped

请参见下面的示例：

-(void)setupAudioSession {

    [[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
    [[AVAudioSession sharedInstance] setMode:AVAudioSessionModeDefault error:nil];
    [[AVAudioSession sharedInstance] setActive:YES withOptions:AVAudioSessionSetActiveOptionNotifyOthersOnDeactivation error:nil];    
}

之后，注册您的观察者，如下所示：

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

并实际实施中断方法：

- (void)audioSessionHandleIntrruption:(NSNotification *)notification {

    NSDictionary *userInfo = notification.userInfo;
    int interruptionType = [userInfo[AVAudioSessionInterruptionTypeKey] intValue];

    if (interruptionType == AVAudioSessionInterruptionTypeBegan) {
        //Interruption begun

    } else if (interruptionType == AVAudioSessionInterruptionTypeEnded) {
        int interruptionOption = [userInfo[AVAudioSessionInterruptionOptionKey] intValue];

        BOOL shouldResumePlayback = interruptionOption == AVAudioSessionInterruptionOptionShouldResume;

        if (shouldResumePlayback) {
            //Resume playback if needed
        }
    }
}

---

希望这能为别人节省很多时间

我们可以使用CTCallCenter吗？我不建议使用CTCallCenter，因为AVAudioSession提供了更详细的界面。我更新了答案以删除不推荐的方法。在文档中，在处理MediaServicesWereReset时，说明了“采取适当的步骤重新初始化应用程序使用的任何音频对象”。。只是重新配置音频会话并将其设置回活动状态。还有什么我该做的吗？太棒了！！这真的对我有用！谢谢你帮我节省时间

- (void)audioSessionHandleIntrruption:(NSNotification *)notification {

    NSDictionary *userInfo = notification.userInfo;
    int interruptionType = [userInfo[AVAudioSessionInterruptionTypeKey] intValue];

    if (interruptionType == AVAudioSessionInterruptionTypeBegan) {
        //Interruption begun

    } else if (interruptionType == AVAudioSessionInterruptionTypeEnded) {
        int interruptionOption = [userInfo[AVAudioSessionInterruptionOptionKey] intValue];

        BOOL shouldResumePlayback = interruptionOption == AVAudioSessionInterruptionOptionShouldResume;

        if (shouldResumePlayback) {
            //Resume playback if needed
        }
    }
}