在通知中播放歌曲 [英] Play song in Notification

问题描述

我想播放一首歌.收到通知时.当应用程序为前台模式时，我的代码工作正常.我想在应用程序处于后台模式时播放歌曲.请帮忙.

I want to play a song. When a notification comes. My code is working fine when the app is foreground mode. I want to play a song when the app is in background mode. Please help.

推荐答案

您需要在plist文件中进行几处更改.

You need to make couple of changes in plist file.

1.)将必需的背景"模式设置为App播放音频.

1.) Set Required background mode to App plays audio.

2.)将设置应用程序不在后台运行"设置为是"

2.) Set Application does not run in background to YES

代码

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any]) {
var state: UIApplicationState = application.applicationState
if state == .active {
    print("User Info : \(userInfo.description)")
    print("User Info Alert Message : \(userInfo["aps"]["alert"])")
    var messageString: String? = "\((userInfo["aps"] as? String)?["alert"] as? String)"
    var playSoundOnAlert: String? = "\((userInfo["aps"] as? String)?["sound"] as? String)"
    var url = URL(fileURLWithPath: "\(Bundle.main.resourcePath)/\(playSoundOnAlert)")
    var error: Error?
    audioPlayer = try? AVAudioPlayer(contentsOf: url)
    audioPlayer.numberOfLoops = 0
    audioPlayer.play()
}
}

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