How to round the corners of a button

Question

I have a rectangle image (jpg) and want to use it to fill the background of a button with rounded corner in xcode.

I wrote the following:

UIButton *b         


        

Answer 1

UIButton* closeBtn = [[UIButton alloc] initWithFrame:CGRectMake(10, 50, 90, 35)];
//Customise this button as you wish then
closeBtn.layer.cornerRadius = 10;
closeBtn.layer.masksToBounds = YES;//Important