iOS - Push notification alert is not shown when the app is running

Question

I've integrated push notifications in my app. Users will receive push notification to join a group. When the user clicks Join, I've to handle something in the code. And so I'm implementing:

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

This is working fine when the app is not running.
When the app is running, I don't see any UIAlertView. How can make my app show the push notification alert so that user can still decide whether to join or not?

Answer 1

I used code like this in my application delegate to mimic the notification alert when the app was active. You should implement the appropriate UIAlertViewDelegate protocol method(s) to handle what happen when the user taps either of the buttons.

- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo {    
  UIApplicationState state = [application applicationState];
  if (state == UIApplicationStateActive) {
      NSString *cancelTitle = @"Close";
      NSString *showTitle = @"Show";
      NSString *message = [[userInfo valueForKey:@"aps"] valueForKey:@"alert"];
      UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Some title"
       message:message 
       delegate:self 
       cancelButtonTitle:cancelTitle 
       otherButtonTitles:showTitle, nil];
      [alertView show];
      [alertView release];
  } else {
    //Do stuff that you would do if the application was not active
  }
}