Are there any standard way to implement the “blue badge” in iPhone?

Question

A lot of iPhone apps use a blue badge to indicate the number of items in the subviews, such as the Mail client:

iPhoto http://img.skitch.com/20081103-tjr9yupbhgr3sqf

Answer 1

There are a few methods in the NSBezierPath class called "appendBezierPathWithRoundedRect....".

I havent tried them out myself, but they might work. It's worth a try.