Question

每当用户点击推送通知时，此方法都会被称为
func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]，fetchCompletionHandler completionHandler: (UIBackgroundFetchResult) -> Void)但是如果app正在启动并且同时推送来同样的方法被调用。如何识别应用程序是否已启动或用户单击图标以使应用程序处于前台。这样我就可以忽略推送通知过程。

Answer 1

在- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

if (launchOptions != nil)
    {
        // Here app will open from pushnotification
        //RemoteNotification
        NSDictionary* dictionary1 = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
        //LocalNotification
        NSDictionary* dictionary2 = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];
        if (dictionary1 != nil)
        {
            //RemoteNotification Payload
            //set your function to handle notification
            NSLog(@"Launched from push notification: %@", dictionary1);
        }
        if (dictionary2 != nil)
        {
            NSLog(@"Launched from dictionary2dictionary2dictionary2 notification: %@", dictionary2);
            double delayInSeconds = 7;
            dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
            dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
                // [self addMessageFromRemoteNotification:dictionary2 updateUI:NO];
            });
        }

     }
     else
         {}

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

 if(application.applicationState == UIApplicationStateInactive) {

        NSLog(@"Inactive - the user has tapped in the notification when app was closed or in background");
        //do some tasks

    }
    else if (application.applicationState == UIApplicationStateBackground) {

        NSLog(@"application Background - notification has arrived when app was in background");
        NSString* contentAvailable = [NSString stringWithFormat:@"%@", [[userInfo valueForKey:@"aps"] valueForKey:@"content-available"]];

        if([contentAvailable isEqualToString:@"1"]) {
            // do tasks
            NSLog(@"content-available is equal to 1");
        }
    }
    else {
        NSLog(@"application Active - notication has arrived while app was opened");
        //Show an in-app banner
        //do tasks
    }

推送通知方法在启动应用程序时获取呼叫

1 个答案: