can't update badge

[StephenZhuang]

• (id)initWithNibName:(NSString )nibNameOrNil bundle:(NSBundle )nibBundleOrNil { self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]; if (self) { // Custom initialization [self awakeFromNib]; } return self; }
• (void)awakeFromNib { [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(refreshNum:) name:@"refreshCartNum" object:nil]; }
• (void)viewDidLoad { [super viewDidLoad]; // Do any additional setup after loading the view. }
• (void)refreshNum:(NSNotification )notification { NSString num = notification.object; [self.rdv_tabBarItem setBadgeValue:num]; }

I add a notification like this, - (void)refreshNum:(NSNotification *)notification,this method works , but the badge does't change;

[robbdimitrov]

Hi Stephen,

Sorry for the delay. The problem can be solved by calling [self setNeedsDisplay]; on the tab bar item after the change. Something like this:

- (void)setBadgeValue:(NSString *)badgeValue {
    _badgeValue = badgeValue;

    [self setNeedsDisplay];
}

I'll add this fix in the next version of RDVTabBarController.

[StephenZhuang]

@robbdimitrov Hi rob,thanks for reply. The solution above seems that does't work correctly. I select tab1 and post a notification as above, and in tab2 I observe the notification. if I don't select tab2, the badge of tab2 will not change or appear.

[robbdimitrov]

@StephenZhuang Hi Stephen, I've managed to inspect and fix the problem. I was setting parentViewController to nil when hiding a view controller. This resulted in a bug where rdv_tabBarController on a hidden controller returned nil value. The problem has been fixed in commit eb74eafcf609c753704cf60c67e43d9869fea4ea.