未调用委托方法

Posted 2023-03-05

【中文标题】未调用委托方法

【英文标题】：Delegate method not being called

【发布时间】：2015-11-14 21:17:45

【问题描述】：

我已经编写了一些方法来在我们的应用程序中实现推送通知（voip pushkit）。它在我为测试代码而创建的 Xcode 项目中完美运行。当我将代码复制到主项目中时，一些委托方法没有被执行......

import UIKit
import PushKit
import AVFoundation
import CoreData
import Meteor
import Stripe

let Meteor = METDDPClient(serverURL: NSURL(string: "http://example.com/websocket")!)


@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, PKPushRegistryDelegate 

    var voipRegistry:PKPushRegistry!
    let designAssets = DesignAssets()
    let stripePublishableKey: String = "xxxxx"
    var ringing: AVAudioPlayer!
    var window: UIWindow?


    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool 

        registerForVoIPPushes()
        return true
    



    func registerForVoIPPushes() 

        let notificationSettings: UIUserNotificationSettings! = UIApplication.sharedApplication().currentUserNotificationSettings()

        if (notificationSettings.types == UIUserNotificationType.None) 
            let notificationTypes: UIUserNotificationType = [.Badge, .Sound, .Alert]
            let notificationSettings = UIUserNotificationSettings(forTypes: notificationTypes, categories: nil)
            UIApplication.sharedApplication().registerUserNotificationSettings(notificationSettings)
        

        voipRegistry = PKPushRegistry(queue: dispatch_get_main_queue())
        voipRegistry.delegate = self
        voipRegistry.desiredPushTypes = Set([PKPushTypeVoIP])
        print("VOIP Push registered")
    


    func pushRegistry(registry: PKPushRegistry!, didUpdatePushCredentials credentials: PKPushCredentials!, forType type: String!) 
        let voipToken: String! = credentials.token.description
        print("\n\n##### PushKit credential: \n\n", voipToken)
    

最后一个方法（didUpdatePushCredentials）永远不会被评估，令牌永远不会打印到控制台......为什么？它在测试项目中运行良好。

【参考方案1】：

Duuuhhh，忘记添加背景模式