TabviewController如何显示未读消息（如徽章）？

Question

Here i am using the 4 tabViews, third one is chat button so here user unread messages how to show the badges

in #import "HomeTabViewController.h"

 - (void)viewDidLoad {
  [super viewDidLoad];
    NSString *badgeVal = @"5";
  [[[[self.tabBarController viewControllers] objectAtIndex:2]  tabBarItem] setBadgeValue:badgeVal];
  }

Answer 1

You need to simply set badgeValue property of tabBarItem for that.

NSString *badgeVal = @"5"; //Unread message count
[[[[self.tabBarController viewControllers] objectAtIndex:2] tabBarItem] setBadgeValue:badgeVal];

Note : I have access 3rd ViewController using objectAtIndex:2 because you want to set badge for the 3rd UITabBarItem .

Answer 2

Well, just use the badgeValue property of the UITabbarItem :

https://developer.apple.com/reference/uikit/uitabbaritem/1617065-badgevalue

Answer 3

Try this.

NSString *badgeVal = @"5"; //Unread message count
[[self navigationController] tabBarItem].badgeValue = badgeVal;

or

[[self.tabBarController.tabBar.items objectAtIndex:<your item position>] setBadgeValue:[NSString stringWithFormat:@"%d",badgeVal]] ;