Setting a background image for UIButton

Question

I am a newbie with Objective C. How would I set the background of this button to an image (image is already in the resources folder in XCode, \"blue_button.png\") instead o

Answer 1

You need to declare your button with the following UIButtonTypeCustom type:

btnClear = [[UIButton buttonWithType:UIButtonTypeCustom] retain];

Then you should be able to use the follow:

[btnClear setImage:[UIImage imageNamed:@"blue_button.png"] forState:UIControlStateNormal];

There are 6 different control states that can be set.

enum {
   UIControlStateNormal               = 0,
   UIControlStateHighlighted          = 1 << 0,
   UIControlStateDisabled             = 1 << 1,
   UIControlStateSelected             = 1 << 2,
   UIControlStateApplication          = 0x00FF0000,
   UIControlStateReserved             = 0xFF000000
};

Here are some references that may help:

UIButton Class Reference

UIControl Class Reference