SetTint of UIButton won't hold

Question

I'm loading the image of UIButton via web as:

NSURL *imageURL = [NSURL URLWithString:[ruleImageArr objectAtIndex:0]];
NSData *data = [NSData dataWithContentsOfURL:imageURL];
[self.classicBackgroundButton setImage:image forState:(UIControlStateNormal)];

Which is working fine. So when user taps on it I want the button to setTint . Here is how I'm doing it:

- (IBAction)classicBackgroundButtonPressed:(id)sender {
    [self.classicBackgroundButton setTintColor:[UIColor greenColor]];
}

But it's not working. Can't seems to figure out whee the problem is? I've searched it around on stackOverFlow but its mostly how I can replace the UIButton image on tap. These images are loading from web and selecting them should highlight them to give a feel that this button is selected. Any Help would be apperciated.

Answer 1

UiImage must have template rendering mode in order to work with tint. Something like this:

UIImage *imageTint = [image imageWithRenderingMode:UIImageRenderingModeAlwaysTemplate];
[button setImage:imageTint forState:UIControlStateNormal]; 

Answer 2

you could use another UIControlState to manage this.

NSURL *imageURL = [NSURL URLWithString:[ruleImageArr objectAtIndex:0]];
NSData *data = [NSData dataWithContentsOfURL:imageURL];
[self.classicBackgroundButton setImage:image forState:(UIControlStateSelected)];
[self.classicBackgroundButton setImage:image forState:(UIControlStateHighlighted)];
[self.classicBackgroundButton setImage:image forState:(UIControlStateNormal)];

Answer 3

Use this instead

- (IBAction)classicBackgroundButtonPressed:(UIButton *)sender {

    [sender setTintColor:[UIColor greenColor]];
}