PushNotifications iOS 7 not working when user taps on icon

问题

I have the methods below to handle push notifications. They work perfect when the app is running and I do receive notifications when the app is in the background. When a user taps the icon however it opens the app but my UICollection view is not reloaded the way it is when a user receives the notification when the app is running.

-(void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
    UIApplicationState state = [application applicationState];
    if (state == UIApplicationStateActive) {
        // do stuff when app is active
        NSString *cancelTitle = @"Close";
        NSString *showTitle = @"Ok";
        NSString *message = [[userInfo valueForKey:@"aps"] valueForKey:@"alert"];
        NSString *type = [userInfo objectForKey:@"type"];

        UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Linkedstar"
                                                            message:message
                                                           delegate:self
                                                  cancelButtonTitle:cancelTitle
                                                  otherButtonTitles:showTitle, nil];

        if([type isEqualToString:@"message"]) {
            alertView.tag = alertMessage;
        }
        else if([type isEqualToString:@"post"]) {
            alertView.tag = post;
        }
        else if([type isEqualToString:@"contact"]) {
            alertView.tag = contact;
        }

        [alertView show];

        [self presentViewForPush:userInfo updateUI:YES];
    }
    else
    {
        // do stuff when app is in background
        NSLog(@"Received notification: %@", userInfo);
        [self handlePush:userInfo updateUI:YES];
    }
}

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    NSDictionary *pushDict = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
    if(pushDict)
    {
        [self handlePush:pushDict updateUI:YES];
    }
}

I need help figuring out how to handle the launchOptions data when the user taps on the icon.I have tried a couple of different options after doing some research online and non worked. any help is greatly appreciated. Thank you.

回答1:

Have you read this Scheduling, Registering, and Handling Notifications

If the action button is tapped (on a device running iOS), the system launches the application and the application calls its delegate’s application:didFinishLaunchingWithOptions: method (if implemented); it passes in the notification payload (for remote notifications) or the local-notification object (for local notifications).

If the application icon is tapped on a device running iOS, the application calls the same method, but furnishes no information about the notification

回答2:

1) When application is running in background and When application is running in foreground application:didReceiveRemoteNotification: method will called as below.

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
{
if ( application.applicationState == UIApplicationStateInactive)
     {
     //opened from a push notification when the app was on background

       NSLog(@"userInfo->%@",[userInfo objectForKey:@"aps"]);
     }
  else if(application.applicationState == UIApplicationStateActive)
     {
     // a push notification when the app is running. So that you can display an alert and push in any view

        NSLog(@"userInfo->%@",[userInfo objectForKey:@"aps"]);
     }
}

2) When application is not launched (close) than application:didFinishedLaunchWithOptionsmethod will called.

 - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
  if (launchOptions != nil)
    {
         //opened from a push notification when the app is closed
        NSDictionary* userInfo = [launchOptions objectForKey:UIApplicationLaunchOptionsRemoteNotificationKey];
        if (userInfo != nil)
        {
             NSLog(@"userInfo->%@",[userInfo objectForKey:@"aps"]);
        }

    }
     else{
             //opened app without a push notification.
         }
}

回答3:

Handling notifications is done in either didReceiveRemoteNotification (app is "alive") or didFinishLaunchingWithOptions (app was "dead").

I don't think you can handle these notifications if the user simply taps on the icon. They must go through the notification itself.

回答4:

I had the same problem: if user clicks on push banner he gets info of push in app, if he clicks on app icon he doesn't get it. You can handle derivative one from it, but with some limits only. Example, if you want to have a badge number from push, you can do it: (Push -> App icon -> App icon badge -> your var)

in AppDelegate

- (void)applicationWillEnterForeground:(UIApplication *)application
{ 
    newMessages = application.applicationIconBadgeNumber;
}

来源：https://stackoverflow.com/questions/22977560/pushnotifications-ios-7-not-working-when-user-taps-on-icon