耳机是否插入？ IOS 7

开发一个iPhone应用程序，audio文件也需要通过耳机收听。

如何检查耳机是否插入，以便我可以告诉用户插入耳机。

我从另一个线程有以下代码，但audioSessionGetProperty方法已被弃用。 任何人都知道如何改变下面的代码来使这个工作或有自己的代码/解决scheme。

谢谢。 

- (BOOL)isHeadsetPluggedIn { UInt32 routeSize = sizeof (CFStringRef); CFStringRef route; //Maybe changing it to something like the following would work for iOS7? //AVAudioSession* session = [AVAudioSession sharedInstance]; //OSStatus error = [session setCategory:kAudioSessionProperty_AudioRoute...? //the line below is whats giving me the warning OSStatus error = AudioSessionGetProperty (kAudioSessionProperty_AudioRoute, &routeSize, &route); /* Known values of route: * "Headset" * "Headphone" * "Speaker" * "SpeakerAndMicrophone" * "HeadphonesAndMicrophone" * "HeadsetInOut" * "ReceiverAndMicrophone" * "Lineout" */ if (!error && (route != NULL)) { NSString* routeStr = (__bridge NSString*)route; NSRange headphoneRange = [routeStr rangeOfString : @"Head"]; if (headphoneRange.location != NSNotFound) return YES; } return NO; }

这应该可行，但我现在不能testing，我会在晚上做。 

 - (BOOL)isHeadsetPluggedIn { AVAudioSessionRouteDescription* route = [[AVAudioSession sharedInstance] currentRoute]; for (AVAudioSessionPortDescription* desc in [route outputs]) { if ([[desc portType] isEqualToString:AVAudioSessionPortHeadphones]) return YES; } return NO; }

只是扩大@安东尼奥的答案。 如果您需要检测用户是否拔出或插入耳机。 

 #import <AVFoundation/AVFoundation.h> 
 // [AVAudioSession sharedInstance]; // @Boris edited: you may need it if there is no `AVAudioSession instance` created before. If doesn't work, uncomment this line. [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(audioRouteChangeListenerCallback:) name:AVAudioSessionRouteChangeNotification object:nil]; // don't forget to `removeObserver:` 
 // If the user pulls out he headphone jack, stop playing. - (void)audioRouteChangeListenerCallback:(NSNotification*)notification { NSDictionary *interuptionDict = notification.userInfo; NSInteger routeChangeReason = [[interuptionDict valueForKey:AVAudioSessionRouteChangeReasonKey] integerValue]; switch (routeChangeReason) { case AVAudioSessionRouteChangeReasonNewDeviceAvailable: NSLog(@"AVAudioSessionRouteChangeReasonNewDeviceAvailable"); NSLog(@"Headphone/Line plugged in"); break; case AVAudioSessionRouteChangeReasonOldDeviceUnavailable: NSLog(@"AVAudioSessionRouteChangeReasonOldDeviceUnavailable"); NSLog(@"Headphone/Line was pulled. Stopping player...."); break; case AVAudioSessionRouteChangeReasonCategoryChange: // called at start - also when other audio wants to play NSLog(@"AVAudioSessionRouteChangeReasonCategoryChange"); break; } }

@ Swift 2.0中的 Warif代码，几乎没有什么变化 

 func audioRouteChangeListenerCallback (notif: NSNotification){ let userInfo:[NSObject:AnyObject] = notif.userInfo! println("\(userInfo)") let routChangeReason = UInt((userInfo[AVAudioSessionRouteChangeReasonKey]?.integerValue)!) switch routChangeReason { case AVAudioSessionRouteChangeReason.NewDeviceAvailable.rawValue: self.println("Headphone/Line plugged in"); break; case AVAudioSessionRouteChangeReason.OldDeviceUnavailable.rawValue: //If the headphones was pulled move to speaker do { try AVAudioSession.sharedInstance().overrideOutputAudioPort(AVAudioSessionPortOverride.Speaker) } catch _ { } self.println("Headphone/Line was pulled. Stopping player...."); break; case AVAudioSessionRouteChangeReason.CategoryChange.rawValue: // called at start - also when other audio wants to play self.println("AVAudioSessionRouteChangeReasonCategoryChange"); break; default: break; } }

：d

Swift 3：

检查是否连接了耳机 

 extension AVAudioSession { static var isHeadphonesConnected: Bool { return sharedInstance().isHeadphonesConnected } var isHeadphonesConnected: Bool { return !currentRoute.outputs.filter { $0.isHeadphones }.isEmpty } } extension AVAudioSessionPortDescription { var isHeadphones: Bool { return portType == AVAudioSessionPortHeadphones } }

然后你可以print("isHeadphones connected: \(AVAudioSession.isHeadphonesConnected)")

聆听变化

在Swift 3中 ，语法是这样的： 

 func handleRouteChange(_ notification: Notification) { guard let userInfo = notification.userInfo, let reasonRaw = userInfo[AVAudioSessionRouteChangeReasonKey] as? NSNumber, let reason = AVAudioSessionRouteChangeReason(rawValue: reasonRaw.uintValue) else { fatalError("Strange... could not get routeChange") } switch reason { case .oldDeviceUnavailable: print("oldDeviceUnavailable") case .newDeviceAvailable: print("newDeviceAvailable") if AVAudioSession.isHeadphonesConnected { print("Just connected headphones") } case .routeConfigurationChange: print("routeConfigurationChange") case .categoryChange: print("categoryChange") default: print("not handling reason") } } func listenForNotifications() { NotificationCenter.default.addObserver(self, selector: #selector(handleRouteChange(_:)), name: NSNotification.Name.AVAudioSessionRouteChange, object: nil) }

注意使用： 

  if AVAudioSession.isHeadphonesConnected { print("Just connected headphones") }

在Swift（截至1.2）： 

  func headsetPluggedIn() -> Bool { let route = AVAudioSession.sharedInstance().currentRoute return (route.outputs as! [AVAudioSessionPortDescription]).filter({ $0.portType == AVAudioSessionPortHeadphones }).count > 0 }

Swift 3.0版本

  • 检查是否插入了耳机或连接了audio输出的任何蓝牙设备的方法 
     func bluetoothOrHeadphonesConnected（） - > Bool {

        让outputs = AVAudioSession.sharedInstance（）。currentRoute.outputs

        用于输出{

            如果output.portType == AVAudioSessionPortBluetoothA2DP ||
                output.portType == AVAudioSessionPortBluetoothHFP ||
                output.portType == AVAudioSessionPortBluetoothLE ||
                output.portType == AVAudioSessionPortHeadphones {
                返回true
             }

         }

        返回false 
     }
  • 在收听任何audio时，检查耳机是否拔出很重要。 
 
    私人func setupObservers（）{

         NotificationCenter.default.addObserver（self，selector：#selector（self.audioRouteChangeListener），name：.AVAudioSessionRouteChange，object：nil）

     }

     func audioRouteChangeListener（通知：通知）{

        后卫let audioRouteChangeReason = notification.userInfo！[AVAudioSessionRouteChangeReasonKey] as？ 诠释其他{返回}

        切换audioRouteChangeReason {

            案例AVAudioSessionRouteChangeReason.oldDeviceUnavailable.hashValue：
                 //堵塞了

            默认：
                打破

         }

     }


 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(plugout:) name:AVAudioSessionRouteChangeNotification object:nil]; -(void)plugout:(NSNotification*)notification { isRemovedHeadset = YES; }

并使用这个isRemovedHeadset布尔值处理你的代码 

 if (moviePlayer.playbackState == MPMoviePlaybackStatePaused) { if(isRemovedHeadset) { isRemovedHeadset = NO; [moviePlayer prepareToPlay]; [moviePlayer play]; return; } }
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