当设备处于静默模式时播放音频-ios swift

我正在使用xcode 7.1 swift创建一个应用程序。我想播放一段音频。一切都很好。现在我的问题是，我想在设备处于静音模式或静音时听到声音。我怎么做

我正在使用以下代码播放音频

currentAudio!.stop()
            currentAudio = try? AVAudioPlayer(contentsOfURL: NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource("sample_audio", ofType: "mp3")!));

            currentAudio!.currentTime = 0

            currentAudio!.play();

---

你可以经历这一切，它会帮你走出困境

当您使用以下音频会话类别时，在iOS上声音将不会静音：

AVAudioSessionCategoryPlayback、AVAudioSessionCategoryRecord、AvaudioSessionCategoryPlayRecord

示例

func playSound (Sound: String, Type: String) {

        //Prepare the sound file name & extension
        var alertSound = NSURL(fileURLWithPath: NSBundle.mainBundle().pathForResource(Sound, ofType: Type)!)

        //Preparation to play
        AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback, error: nil)
        AVAudioSession.sharedInstance().setActive(true, error: nil)

        //Play audio

        var error: NSError?
        audioPlayer = AVAudioPlayer(contentsOfURL: alertSound, error: &error)
        audioPlayer.prepareToPlay()
        audioPlayer.play()
        }

---

在调用AVPlayer的play（）方法之前，请先写这行

在目标C中

[[AVAudioSession sharedInstance]
            setCategory: AVAudioSessionCategoryPlayback
                  error: nil];

在Swift中

do {
    try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
 }
 catch {
    // report for an error
 }

Swift 5

do {
      try AVAudioSession.sharedInstance().setCategory(.playback)
   } catch(let error) {
       print(error.localizedDescription)
   }

---

Swift 3.0和Xcode>8

当设备处于振铃模式和静音模式时，在视频中播放声音

 do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
        //print("AVAudioSession Category Playback OK")
        do {
            try AVAudioSession.sharedInstance().setActive(true)
            //print("AVAudioSession is Active")
        } catch _ as NSError {
            //print(error.localizedDescription)
        }
    } catch _ as NSError {
        //print(error.localizedDescription)
    }

---

Swift 4

播放视频前请使用此行

try? AVAudioSession.sharedInstance().setCategory(.playback, mode: .default, options: [])

Swift 4.2

---

您可以使用

AppDelegate

class

在设备处于静默模式时启用声音（音频或视频）请使用：

func applicationDidBecomeActive(_ application: UIApplication) {

    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategoryPlayback)
    } catch {
        print("AVAudioSessionCategoryPlayback not work")
    }
}

当设备处于静音模式时（例如，当我们接听电话时）禁用声音，请使用：

func applicationWillResignActive(_ application: UIApplication) {

    do {
        try AVAudioSession.sharedInstance().setCategory(AVAudioSessionCategorySoloAmbient)
    } catch {
        print("AVAudioSessionCategorySoloAmbient not work")
    }
}

并将其添加到AppDelegate的

ApplicationIDBecomeActive

部分

func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)
            print("AVAudioSession Category Playback OK")
            do {
                try AVAudioSession.sharedInstance().setActive(true)
                print("AVAudioSession is Active")
            } catch {
                print(error.localizedDescription)
            }
        } catch {
            print(error.localizedDescription)
        }
    }

---

Swift 5.0.1

try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)

---

你能分享一些例子吗？Op正在使用Swift 2（他们在问题中提到了Xcode 7.1）。您的示例是Swift 1。它是否有效？我是否需要在所有屏幕中进行日化，或者使用first view controller就足够了？太棒了，完美地保存了我的日常工作，谢谢！导入是：

#导入

小细节：对于“捕获”，您不需要指定（让错误），因为swift将为您执行此操作。您好。这是错误的：

catch\u作为n错误

。在这种情况下，只需使用

catch

。不要向下转换为丢弃的值，这没有意义。它仅适用于iOS10+

func applicationDidBecomeActive(_ application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
        do {
            try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)
            print("AVAudioSession Category Playback OK")
            do {
                try AVAudioSession.sharedInstance().setActive(true)
                print("AVAudioSession is Active")
            } catch {
                print(error.localizedDescription)
            }
        } catch {
            print(error.localizedDescription)
        }
    }

try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback)