//外部角标
[UIApplicationsharedApplication].applicationIconBadgeNumber = 1;
//tabbar角标
UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"首页" image:nil tag:0];
customItem1.badgeValue = @"1";
//外部角标
[UIApplicationsharedApplication].applicationIconBadgeNumber = 1;
//tabbar角标
UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"首页" image:nil tag:0];
customItem1.badgeValue = @"1";
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