如何正确接收推送通知

Question

我正在使用Xcode 9.2，Swift 4.0，最小iOS版本编写VoIP应用程序，为10.3。我想接到即使是iPhone处于睡眠模式的接收来电(就像WhatsApp或Viber一样(。我已经知道我必须使用callkit。但是我不知道如何正确接收推送通知。我的意思是，我有两种方法如何接收它们。首先是AppDelegate.swift，请查看(此方法正在使用(：

import UIKit
import UserNotifications
@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {
    var window: UIWindow?
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        //Getting permissions for Notifications
        //222
        UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) { granted, error in
        }
        application.registerForRemoteNotifications()
        //222
        return true
    }
    //For PUSH Notifications settings
    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("NOTIFICATION ERROR: (error)")
    }
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let pushToken = deviceToken.reduce("", {$0 + String(format: "%02X", $1)}).lowercased()
    }
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        // Receiving call?
    }
}

但是，无论如何，我在做什么，如果iPhone睡觉，它不会触发来电。最近，我看到还有另一种接收推送通知的方法。请看：

import UIKit
import CallKit
import PushKit
class ViewController: UIViewController, CXProviderDelegate, PKPushRegistryDelegate {
    override func viewDidLoad() {
        let registry = PKPushRegistry(queue: nil)
        registry.delegate = self
        registry.desiredPushTypes = [PKPushType.voIP]
    }
    func providerDidReset(_ provider: CXProvider) {
    }
    func provider(_ provider: CXProvider, perform action: CXAnswerCallAction) {
        action.fulfill()
    }
    func provider(_ provider: CXProvider, perform action: CXEndCallAction) {
        action.fulfill()
    }
    func pushRegistry(_ registry: PKPushRegistry, didUpdate pushCredentials: PKPushCredentials, for type: PKPushType) {
        print(pushCredentials.token.map { String(format: "%02.2hhx", $0) }.joined())
    }
    func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void) {
        // Receive call?
    }
}

问题是，在第一种方法中，我有此推动令牌：9BCF73AC3D6A68BE07C26D8B6A972F5B716CD5308F1A1A1A1A1A1A1A1A1A1A148B62D19B9B9B9B9B8D4BD1

第二种方法返回我这个推动令牌：1E40FAFB2963161B1BCF1BDDE00D625A879C6934E19E2FB32FB32F62B1C9272E956F

它们不等！怎么会这样？因此，主要问题是：如何接收推送通知，AppDelegate和Pushkit方法之间有什么区别，哪个令牌是正确的？

感谢您的任何帮助！

Answer 1

有两种类型的通知(实际上更多，但在这种情况下，只有两个(：推送通知和VOIP通知。它们具有不同的令牌和不同的接收系统。VoIP服务仅用于呼叫(Apple CallKit(，与消息和其他通知存在相反的推送服务。因此，实际上，这两种方法都是必要的，并且不能取代另一种方法。这两种方法都需要在Apple开发人员帐户中使用不同证书的方法：Apple Push Notification Service SSL用于推送通知和VoIP的VoIP服务证书。谢谢大家的帮助！如果您看到错误，请自由编辑。

Answer 2

首先删除此行应用程序

现在在下面的puskit中使用正确的令牌

   func pushRegistry(_ registry: PKPushRegistry, didUpdate credentials: PKPushCredentials, forType type: PKPushType) {
    print("(#function) voip token: (credentials.token)")
    let deviceToken = credentials.token.reduce("", {$0 + String(format: "%02X", $1) })
    print("(#function) token is: (deviceToken)")}

和按钮框架没有UI，例如远程或本地通知，您需要每次触发本地通知，而下面的方法称为

func pushRegistry(_ registry: PKPushRegistry, didReceiveIncomingPushWith payload: PKPushPayload, for type: PKPushType, completion: @escaping () -> Void) {
    // Receive call?
}