I want to set the image of a UIButton on a particular event. This is what I did:
btn.setImage(UIImage(named: "star"))
Objective-C
UIImage *img = [UIImage imageNamed:@"star.png"];
[btn setImage:img forState:UIControlStateNormal];
Swift 3
let img = UIImage(named: "star")
btn.setImage(img , forState: .normal)
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