Question

在我的应用程序中，我从Parse.com发送推送通知。我创建并安装了所有证书和应用程序功能。但是，如果应用程序在后台，我会在通知中心收到通知我点击并打开我的应用程序，我看不到包含所发送消息的任何警报。以下代码：

import UIKit
import Parse

@UIApplicationMain class AppDelegate: UIResponder, UIApplicationDelegate {

    var window: UIWindow?


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

        Parse.setApplicationId("appid",
            clientKey: "clientkey")

        // 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)
            }
        }

        if application.respondsToSelector("registerUserNotificationSettings:") {
            let userNotificationTypes: UIUserNotificationType = [UIUserNotificationType.Alert, UIUserNotificationType.Badge, UIUserNotificationType.Sound]
            let settings = UIUserNotificationSettings(forTypes: userNotificationTypes, categories: nil)
            application.registerUserNotificationSettings(settings)
            application.registerForRemoteNotifications()
        } else {
            let types: UIRemoteNotificationType = [UIRemoteNotificationType.Badge, UIRemoteNotificationType.Alert, UIRemoteNotificationType.Sound]
            application.registerForRemoteNotificationTypes(types)
        }

        if let notification = launchOptions as? [String : AnyObject] {
            if let notificationDictionary = notification[UIApplicationLaunchOptionsRemoteNotificationKey] as? [NSObject : AnyObject] {
                self.application(application, didReceiveRemoteNotification: notificationDictionary)
            }
        }

        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 {
            print("Push notifications are not supported in the iOS Simulator.")
        } else {
            print("application:didFailToRegisterForRemoteNotificationsWithError: %@", error)
        }
    }

    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {

        if application.applicationState == UIApplicationState.Inactive {
            PFAnalytics.trackAppOpenedWithRemoteNotificationPayload(userInfo)
        }

        PFPush.handlePush(userInfo)
    }

    func clearBadges() {

        let installation = PFInstallation.currentInstallation()
        installation.badge = 0
        installation.saveInBackgroundWithBlock { (success, error) -> Void in
            if success {
                print("cleared badges")
                UIApplication.sharedApplication().applicationIconBadgeNumber = 0
            }
            else {
                print("failed to clear badges")
            }
        }
    }


    func applicationDidBecomeActive(application: UIApplication) {

        clearBadges()
    }


    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 active state; here you can undo many of the changes made on entering the background.
    }


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

Answer 1

从该通知打开应用程序时，不会自动弹出通知的有效负载。

方法：

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo

不跟踪从推送通知打开应用程序的时间 - 此方法执行：

(BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions

由M.Othman在这篇帖子中提到：Detect if the app was launched/opened from a push notification

检查通知：

UILocalNotification *notification = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
if (notification) {
    NSLog(@"app recieved notification from remote%@",notification);
    [self application:application didReceiveRemoteNotification:(NSDictionary*)notification];
}else{
     NSLog(@"app did not recieve notification");
}

PFPush HandlePush方法如果不显示警告，您也可以创建自己的警报视图控制器。

使用Parse推送通知：在应用程序处于后台时显示警报

1 个答案: