Why UIButton does not require to alloc and init?

Question

Why UIButton does not require to alloc and init call instead we use only UIButton *myBtn = [UIButton buttonWithType:UIButtonTypeCustom];.

1. Does the above line automatically alloc s and init the uibutton??
2. Is it necessary to release myBtn?,since i'm not using alloc and init explicitly.

This may be a simple question but i don't know the correct answer for this, does anybody can help? Any help is appreciated,thanks in advance.

Answer 1

Well the buttonWithType will return a type of UIButton which is alloc and init for you. It is also autoreleased.

You can als alloc and init a UIButton your self, this will give you an UIButton of type UIButtonTypeCustom.