Question

我有这个代码注册app app上的推送通知，但什么也没发生。

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.
        singleton.deviceToken = nil;
        application.registerForRemoteNotifications()
        return true
    }

    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        var token = deviceToken.description.trimmingCharacters(in: CharacterSet.init(charactersIn:"<>"));
        token = token.replacingOccurrences(of: " ", with: "");
        singleton.deviceToken = token;
    }

    func application(_ application: UIApplication, didRegister notificationSettings: UIUserNotificationSettings) {
        if notificationSettings.types == .none { application.registerForRemoteNotifications() }
    }

    func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {
        print("Cannot register for push notification. Repeating.")
        application.registerForRemoteNotifications();
    }

我已经在上面的所有方法上设置了断点，但唯一被调用的方法只是application(application:didFinishLaunchingWithOptions:)。所有其他人永远不会被召唤
我的测试设备上的应用程序从不显示任何显示推送通知的请求。
我已经请求在目标上显示推送通知的功能。它说：[✓]将推送通知添加到您的应用程序ID，[✓]将推送通知权利添加到您的权利文件。

控制台上没有任何内容。

有什么问题？以及如何解决这个问题？至少，如果我没有注册推送通知，我希望在控制台上重复打印Cannot register for push notification. Repeating.。但是控制台上也没有任何东西。

PS：我刚刚将我的Xcode更新为8.2.1。但话说回来，在我升级到8.2.1之前，我从未尝试使用当前项目进行推送通知，因此如果我使用旧的Xcode，我不知道推送通知是否有效。< / p>

Answer 1

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    self.registerForRemoteNotification(application:application ) // call method to register push notification
    return true
}

//MARK : Push Notification
// add this code in AppDelegate.swift outside of classs
import UserNotifications
extension AppDelegate:UNUserNotificationCenterDelegate {
    func registerForRemoteNotification(application: UIApplication) {
        if #available(iOS 10.0, *) {
            let center  = UNUserNotificationCenter.current()
            center.delegate = self
            center.requestAuthorization(options: [.alert,.sound,.badge], completionHandler: { (complete, error) in
                if let err = error {
                    print(err.localizedDescription)
                } else {
                    UIApplication.shared.registerForRemoteNotifications()
                }
            })
        }
        else {
            let types:UIUserNotificationType = ([.alert, .sound, .badge])
            let settings:UIUserNotificationSettings = UIUserNotificationSettings(types:types, categories:nil)
            application.registerUserNotificationSettings(settings)
            application.registerForRemoteNotifications()
        }
    }
    @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print("User Info = ",response.notification.request.content.userInfo)
        completionHandler()

    }
    @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (UNNotificationPresentationOptions) -> Void) {
        print("User Info = ",notification.request.content.userInfo)
        completionHandler([.alert,.sound,.badge])
    }

    func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
        print(deviceToken)
    }

    func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
        print("Fail to register for notification : \(error.localizedDescription)")
    }

    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {

        if UIApplication.shared.applicationState == .active {
            if let dictAps = userInfo["aps"] as? NSDictionary {
                if let message = dictAps["alert"] as? String {
                    print(message) // show

                }
            }
        }

    }
}

Answer 2

导入UserNotifications

框架并在AppDelegate.swift中添加UNUserNotificationCenterDelegate 请求用户权限

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    registerForRemoteNotification()
    return true
}

 func registerForRemoteNotification() {
    if #available(iOS 10.0, *) {
        let center  = UNUserNotificationCenter.current()
        center.delegate = self
        center.requestAuthorization(options: [.sound, .alert, .badge]) { (granted, error) in
            if error == nil{
                UIApplication.shared.registerForRemoteNotifications()
            }
        }
    }
    else {
          UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.sound, .alert, .badge], categories: nil))
        UIApplication.shared.registerForRemoteNotifications()
    }
}

//Getting device token
func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {

let deviceTokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
print(deviceTokenString)


}
//In case of error
func application(_ application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: Error) {

    print("i am not available in simulator \(error)")

}
//In case if you need to know the permissions granted
UNUserNotificationCenter.current().getNotificationSettings(){ (setttings) in

        switch setttings.soundSetting{
        case .enabled:

            print("enabled sound setting")

        case .disabled:

            print("setting has been disabled")

        case .notSupported:
            print("something vital went wrong here")
        }
    }

如何在iOS中正确注册推送通知？

2 个答案: