Question

Apple在StoreKit框架内提供了一种检测用户是否有Apple Music订阅的方法，尽管这种方法根本行不通。我有Apple Music订阅，既可以在我的应用程序中收听歌曲，也可以从我的应用程序中将内容添加到我的音乐库中。这是我的代码：

let serviceController = SKCloudServiceController()
serviceController.requestCapabilities { (capability:SKCloudServiceCapability, err:Error?) in
    print("error in capability check is \(err)")
    switch capability {
    case SKCloudServiceCapability.musicCatalogPlayback:
        print("user has Apple Music subscription and can play music from apple music api")
    case SKCloudServiceCapability.addToCloudMusicLibrary:
        print("user has an Apple Music subscription, can play music from api, also can add to their music library")
    case SKCloudServiceCapability.musicCatalogSubscriptionEligible:
        print("user does not have subscription")
    default:
        print("default and capability is \(capability.rawValue)")
    }
}

每次运行我的应用程序时，它都会显示“默认值，功能为257”。我尝试卸载/重新安装大概十几次，每次都一样。

注意，我确实可以获取用户令牌，并通过Apple Music API将歌曲添加到我的音乐库中。

其他人都经历过这种情况，还有另一种变通办法来查看用户是否有Apple Music订阅吗？

Answer 1

capability是OptionSet，因为用户可能具有musicCatalogPlayback或addToCloudMusicLibrary或两者都有。

您看到的原始值是实际值的按位OR，因为正如您所说的，您具有这两种功能。

您可以使用一系列if语句或特定的if语句来检查所需的功能：

let serviceController = SKCloudServiceController()
serviceController.requestCapabilities { (capability:SKCloudServiceCapability, err:Error?) in
    guard err == nil else {
        print("error in capability check is \(err!)")
        return
    }

    if capability.contains(SKCloudServiceCapability.musicCatalogPlayback) {
        print("user has Apple Music subscription and can play music from apple music api")
    }

    if capability.contains(SKCloudServiceCapability.addToCloudMusicLibrary) {
        print("user has an Apple Music subscription, can play music from api, also can add to their music library")
    }

    if capability.contains(SKCloudServiceCapability.musicCatalogSubscriptionEligible) {
        print("user does not have subscription")
    }
}

给予

用户已订阅Apple Music，并且可以播放来自Apple Music API的音乐

用户具有Apple Music订阅，可以播放api中的音乐，也可以添加到其音乐库中

Answer 2

您可以使用以下功能来检查Apple Music订阅不起作用/用户没有订阅。

var cloudServiceController：SKCloudServiceController？ var cloudServiceSetUpController：SKCloudServiceSetupViewController？

内部函数appleMusicRequestCapabilities（）{

    if let aController = AppleMusicSharedInstance.shared.cloudServiceController{

        aController.requestCapabilities { (capabilities, error) in

            if error != nil{
                debugPrint("Error", error ?? "Unexpected Error")
            }else{
                if capabilities.contains(SKCloudServiceCapability.musicCatalogPlayback){
                    debugPrint("musicCatalogPlayback")
                }
                if capabilities.contains(SKCloudServiceCapability.musicCatalogSubscriptionEligible){
                    debugPrint("musicCatalogSubscriptionEligible")
                    DispatchQueue.main.async {
                        self.setUpSubscriptionView()
                    }
                }
                if capabilities.contains(SKCloudServiceCapability.addToCloudMusicLibrary){
                    debugPrint("addToCloudMusicLibrary")
                }
            }
        }
    }
}

以下方法可用于显示音乐订阅视图，用户可以在其中选择订阅。

内部功能setUpSubscriptionView（）{

    if let aController = AppleMusicSharedInstance.shared.cloudServiceSetUpController{
        aController.load(options: [SKCloudServiceSetupOptionsKey.action: SKCloudServiceSetupAction.subscribe], completionHandler: { (success, error) in
            DispatchQueue.main.async {
                if success{
                    AppDelegate.delegate().window?.rootViewController?.present(aController, animated: true, completion: nil)
                }
                else if (error != nil){
                    debugPrint("Error", error ?? "Unexpected Error")
                }
            }
        })
    }
}

Apple Music Api-检测Apple Music订阅不起作用

2 个答案: