如何覆盖静音模式并在通知扩展中播放声音

Question

我正在努力实现像查找我的iPhone应用程序这样的功能。即使在关闭状态下，它也会以最大音量播放声音。我不想用VOIP电话来做这件事，因为我的应用程序不需要它，所以它可能会被拒绝。

以下是我要做的：

override func didReceive(_ request: UNNotificationRequest, withContentHandler contentHandler: @escaping (UNNotificationContent) -> Void) {
self.contentHandler = contentHandler
bestAttemptContent = (request.content.mutableCopy() as? UNMutableNotificationContent)
var audioPlayer = AVAudioPlayer()

let songTitle = "ping"
let songExtension  = "mp3"


if let url = Bundle.main.url(forResource: "(songTitle)", withExtension: "(songExtension)")  {

let volumeView = MPVolumeView()
if let view = volumeView.subviews.first as? UISlider{
view.value = 1.0 //---0 t0 1.0---

}

do {
let data = try Data(contentsOf: url)
try AVAudioSession.sharedInstance().setCategory(AVAudioSession.Category.playback, options: .mixWithOthers)

try AVAudioSession.sharedInstance().setActive(true)

audioPlayer = try AVAudioPlayer(data: data, fileTypeHint: AVFileType.mp3.rawValue)
audioPlayer.volume = 1.0
audioPlayer.prepareToPlay()
audioPlayer.play()
} catch let error {
print("[SoundPlayer] There was an error: (String(describing: error))")
}

if (audioPlayer.isPlaying) {
audioPlayer.stop()
}
audioPlayer.play()
}

if let bestAttemptContent = bestAttemptContent {
// Modify the notification content here...
bestAttemptContent.title = "(bestAttemptContent.title) [modified]"

contentHandler(bestAttemptContent)


}
}

每当我尝试调试应用程序时，我都会遇到错误：错误域=NSOSStatusErrorDomain Code=5561015905"；(null(">

Answer 1

你不能这么做。苹果可以在紧急情况下覆盖静音开关，比如找到设备。你不是苹果，所以你不能获得特殊豁免，让你的通知播放覆盖静音开关的声音。