在tabbar上添加小红点 消息提示

//设置tabbar的未读消息数

-(void)setToolbarBadge:(NSUInteger)count
{
    
    if (count !=0) {
        if (count > 99)
        {
            [self.parentViewController.tabBarItem setBadgeValue:@"99+"];
        }
        else
        {
            [self.parentViewController.tabBarItem setBadgeValue:[NSString stringWithFormat:@"%ld",(unsigned long)count]];
        }
    }else
    {
        [self.parentViewController.tabBarItem setBadgeValue:nil];
    }
    
}

//设置icon的未读消息数

        [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];