Drawing circle in Objective-c

Question

I am a beginner in iPhone programing. I need to create circles like Figure 1, where it should be divided in six different parts with four different levels (see Figure 1). Furthe

Answer 1

If you in any way want to have the changes animate (like when you zoom in on a category in the last image) then you should really try and use as much Core Animation as possible.

Have a look at this great tutorial on making a custom animatable pie chart with Core Animation. I'm sure that you can modify it to get what you want.

Also, if you don't care about animations and are okay with only displaying circles that jump from state to state then Core Animation will probably just make things overly complex and thing like Core Graphics (like the other answers mentioned) is probably the right way to go.