Question

这是我的完整“AppDelegate.swift”文件：

import UIKit

import Parse
import Bolts

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.

        Parse.setApplicationId("NOT SHOWING MY KEY",
            clientKey: "NOT SHOWING MY KEY2")

        // Register for Push Notitications
        if application.applicationState != UIApplicationState.Background {
            // Track an app open here if we launch with a push, unless
            // "content_available" was used to trigger a background push (introduced in iOS 7).
            // In that case, we skip tracking here to avoid double counting the app-open.

            let preBackgroundPush = !application.respondsToSelector("backgroundRefreshStatus")
            let oldPushHandlerOnly = !self.respondsToSelector("application:didReceiveRemoteNotification:fetchCompletionHandler:")
            var pushPayload = false
            if let options = launchOptions {
                pushPayload = options[UIApplicationLaunchOptionsRemoteNotificationKey] != nil
            }
            if (preBackgroundPush || oldPushHandlerOnly || pushPayload) {
                //PFAnalytics.trackAppOpenedWithLaunchOptions(launchOptions)
                PFAnalytics.trackAppOpenedWithLaunchOptionsInBackground(launchOptions, block: nil)
            }
        }
        if application.respondsToSelector("registerUserNotificationSettings:") {
            let userNotificationTypes = UIUserNotificationType.Alert | UIUserNotificationType.Badge | UIUserNotificationType.Sound
            let settings = UIUserNotificationSettings(forTypes: userNotificationTypes, categories: nil)
            application.registerUserNotificationSettings(settings)
            application.registerForRemoteNotifications()
        } else {
            let types = UIRemoteNotificationType.Badge | UIRemoteNotificationType.Alert | UIRemoteNotificationType.Sound
            application.registerForRemoteNotificationTypes(types)
        }

        return true
    }

    func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
        let installation = PFInstallation.currentInstallation()
        installation.setDeviceTokenFromData(deviceToken)
        //installation.saveInBackground()
        installation.saveInBackgroundWithTarget(nil, selector: nil)
    }

    func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
        if error.code == 3010 {
            println("Push notifications are not supported in the iOS Simulator.")
        } else {
            println("application:didFailToRegisterForRemoteNotificationsWithError: %@", error)
        }
    }

    func application(application: UIApplication,  didReceiveRemoteNotification userInfo: [NSObject : AnyObject],  fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
        if application.applicationState == .Inactive {
            PFAnalytics.trackAppOpenedWithRemoteNotificationPayload(userInfo)
        }
    }

    func applicationWillResignActive(application: UIApplication) {
        // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
        // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
    }

    func applicationDidEnterBackground(application: UIApplication) {
        // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
        // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
    }

    func applicationWillEnterForeground(application: UIApplication) {
        // Called as part of the transition from the background to the inactive state; here you can undo many of the changes made on entering the background.
    }

    func applicationDidBecomeActive(application: UIApplication) {
        // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    }

    func applicationWillTerminate(application: UIApplication) {
        // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
    }
}

我从这里开始设置： https://www.parse.com/apps/quickstart#parse_push/ios/swift/existing

当我打开xCode，并使用有线电视到iphone测试我的应用程序时，当我从网站按“尝试”时出现错误：

警告：应用程序代表收到了来电 -application：didReceiveRemoteNotification：fetchCompletionHandler：但是从未调用完成处理程序。

Answer 1

请执行错误消息建议的内容：调用完成处理程序

来自文档

完成处理通知后，您必须立即拨打电话处理程序参数中的块或您的应用程序将被终止。您的应用程序有超过30秒的挂钟时间来处理通知并调用指定的完成处理程序块。在练习，你应该在完成后立即调用处理程序块处理通知。系统跟踪经过的时间，功率应用程序后台下载的使用情况和数据费用。应用程序处理远程通知时使用大量电量可能并不总是提前被唤醒以处理未来的通知。

所以，例如致电

completionHandler(.NewData)

Answer 2

我清理了你的AppDelegate.swift了一下。这应该是注册和使用推送通知所需的全部内容。我还在最后添加了一个功能，以便在用户打开应用程序时清除徽章计数器：

import UIKit
import Parse
import Bolts

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
        // Override point for customization after application launch.

        Parse.setApplicationId("NOT SHOWING MY KEY",
            clientKey: "NOT SHOWING MY KEY2")

        // Register for Push Notitications
        let userNotificationTypes = (UIUserNotificationType.Alert |
            UIUserNotificationType.Badge |
            UIUserNotificationType.Sound);

        let settings = UIUserNotificationSettings(forTypes: userNotificationTypes, categories: nil)
        application.registerUserNotificationSettings(settings)
        application.registerForRemoteNotifications()


        return true
    }

    func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
        let installation = PFInstallation.currentInstallation()
        installation.setDeviceTokenFromData(deviceToken)
        installation.saveInBackground()
    }

    func application(application: UIApplication, didFailToRegisterForRemoteNotificationsWithError error: NSError) {
        if error.code == 3010 {
            println("Push notifications are not supported in the iOS Simulator.")
        } else {
            println("application:didFailToRegisterForRemoteNotificationsWithError: %@", error)
        }
    }

    func application(application: UIApplication,  didReceiveRemoteNotification userInfo: [NSObject : AnyObject],  fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void) {
        if application.applicationState == .Inactive {
            PFAnalytics.trackAppOpenedWithRemoteNotificationPayload(userInfo)
        }
    }

    // ADDED FUNCTION:
    func applicationDidBecomeActive(application: UIApplication) {

        //Reset badge counter to zero
        var currentInstallation = PFInstallation.currentInstallation()
        if(currentInstallation.badge != 0){
            currentInstallation.badge = 0
        }
    }



}

application：didReceiveRemoteNotification：fetchCompletionHandler错误

2 个答案: