buttons turn blue when backgroundimage is set

Question

I have a few buttons and when I set a picture as background the icons turn blue, for example:

[self.button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];

All pictures are black and white, so I don't understand why they change their color when I set them as a backgroundimage.

Answer 1

Make sure to init the button as a "UIButtonTypeCustom"

UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];

Then if you want the whole button to be an image, you use:

[button setImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];

... Or if you want to have the image as the background, and still see the "title", you use:

 [button setBackgroundImage:[UIImage imageNamed:@"image.png"] forState:UIControlStateNormal];