[强制关闭后收到Pushkit voip通知时，IOS应用程序崩溃

Question

我正在尝试关闭应用程序时使pushkit voip消息正常工作。当应用程序在前台或后台时，这些电话可以正常工作并显示。但是在用户强制杀死该应用程序之后，当收到通知时，该应用程序将终止并发出信号9（被用户/ ios杀死）。

如何解决此问题？

我在我的应用中启用了后台抓取，语音，音频和推送通知。还尝试删除所有Unity方法，将Callkit调用放入PushRegistry方法中，在收到通知时创建新的提供程序，甚至订阅UIApplicationDidFinishLaunchingNotification事件，但没有任何效果。我做到了，因此该应用程序可以在收到voip通知时显示呼叫。这是我的代码：

@objcMembers class CallPlugin: UIResponder, UIApplicationDelegate, PKPushRegistryDelegate, CXProviderDelegate {

static var Instance: CallPlugin!
var provider: CXProvider!
var registry:PKPushRegistry!
var uuid:UUID!
var callController: CXCallController!

//class entry point
public static func registerVoIPPush(_ message: String) {
    Instance = CallPlugin()

    //Pushkit
    Instance.registry = PKPushRegistry(queue: DispatchQueue.main)
    Instance.registry.delegate = Instance
    Instance.registry.desiredPushTypes = [PKPushType.voIP]

    //Callkit
    let providerConfiguration = CXProviderConfiguration(localizedName: "testing")
    providerConfiguration.supportsVideo = true
    providerConfiguration.supportedHandleTypes = [.generic]
    Instance.provider = CXProvider(configuration: providerConfiguration)
    Instance.provider.setDelegate(Instance, queue: nil)        

    UnitySendMessage("ResponseHandler", "LogNative", "registration success")
}

//Get token
func pushRegistry( _ registry: PKPushRegistry, didUpdate credentials: PKPushCredentials, for type: PKPushType) {
    if type == PKPushType.voIP {
        let deviceTokenString = credentials.token.map { String(format: "%02.2hhx", $0) }.joined()
        UnitySendMessage("ResponseHandler", "CredentialsRecieved",deviceTokenString)
    }
}       

//Get notification
func pushRegistry( _ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type:PKPushType, completion: @escaping () -> Void) {

    //UnitySendMessage("ResponseHandler", "LogNative", "Got something push")
    reportInComingCallWith(uuidString: "111", handle: "Paul", isVideo: false)
    completion()
}

//show the call
func reportInComingCallWith(uuidString:String,handle:String,isVideo:Bool) {
    //UnitySendMessage("ResponseHandler", "LogNative", "attempting call")
    let callUpdate = CXCallUpdate()        
    callUpdate.remoteHandle = CXHandle(type: .generic, value: handle)        
    callUpdate.hasVideo = false

    uuid = NSUUID() as UUID

    provider.reportNewIncomingCall(with: uuid as UUID, update: callUpdate){ (error) in
        if let error = error {
            UnitySendMessage("ResponseHandler", "LogNative", "error in starting call"+error.localizedDescription)
        }
    }
}

我正在尝试关闭应用程序时使pushkit voip消息正常工作。当应用程序在前台或后台时，这些电话可以正常工作并显示。但是，在用户强行杀死了...

Answer 1

问题是我的应用程序没有及时创建委托和pushregistry对象以完全处理通知。