How do I update the badge number for uitabbaritem when a new push notification arrives

Question

How can I update the badge for a specific UITabBarItem when a new push notification arrives? For example like the activity tab in Instagram

score 1 · Accepted Answer · answered May 15 '15 at 07:47

1

You should use the following code:

[[[[[self tabBarController] tabBar] items] 
               objectAtIndex:tabIndex] setBadgeValue:badgeValueString];

answered May 15 '15 at 07:47

Ritu

661
3
8

Yes but how do I access the tabbarController from the AppDelegate where the push notification is handled? – Gil May 15 '15 at 08:54
Where you have created tabbarcontroller? I guess, it should be in AppDelegate – Ritu May 15 '15 at 08:55
I just dragged it to the storyboard – Gil May 15 '15 at 08:56
Please check : self.window.rootViewController. Is it tabbarcontroller instance? – Ritu May 15 '15 at 09:00
rootViewController is a UIView. When I try to access rootViewController.tabBarController I get nil – Gil May 15 '15 at 09:14
How rootviewcontroller can be UIView? It can be UIViewController or UINavigationController or UITabbarController. – Ritu May 15 '15 at 09:20
Sorry I meant UIViewController :) – Gil May 15 '15 at 09:27
In AppDelegate, Can you get the instance of ViewController, currently present? If yes, you have to get it and check currentViewController.tabbarController . If not, rootviewController must be a UINavigationController object and you can get [[navController.viewControllers lastObject] tabbarController] will provide the tabbar controller instance – Ritu May 15 '15 at 09:35

score 1 · Answer 2 · answered May 15 '15 at 07:52

1

NSString *badgeValue = [NSString stringWithFormat:@"%lu", (long)countUnreadMessages];

[[[[self viewControllers] objectAtIndex:indexOfTabbarItem] tabBarItem] setBadgeValue:([badgeValue isEqualToString:@"0"]) ? nil : badgeValue];

answered May 15 '15 at 07:52

Utsav Parikh

1,216
7
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How do I update the badge number for uitabbaritem when a new push notification arrives

2 Answers2