iOS开发 关于未读消息的红色角标

Question

如下图QQ的界面所示，消息标签处红色角标如何实现？它与应用图标外的红色通知角标实现原理相同吗？请尽可能详细的描述一下

Answer 1

Damn it, when I came in, I saw that I was an acquaintance. . . I haven't done this, but I think I've seen it.

The external subscript code is as follows:

    [UIApplicationsharedApplication].applicationIconBadgeNumber = 2333;

The corner mark of this Tabbar is like this:

UITabBarItem *item = [[UITabBarItem alloc] initWithTitle:@"建伟傻逼" image:nil tag:0];
customItem1.badgeValue = @"2333"; 

So the code is different.
By the way, Cell, UILabel can be achieved by setting the background color to red and rounded corners

Answer 2

What you said above is correct, add a UILabel
Change the font color and background color
Then change the corner in the layer
That value should be half of your UILabel