[button setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];
[button setSelected:YES];
[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateSelected | UIControlStateHighlighted];
[button setImage:[UIImage imageNamed:@"checked.png"] forState:UIControlStateSelected];[button setSelected:YES];[button setImage:[UIImage imageNamed:@"pressed.png"] forState:UIControlStateSelected | UIControlStateHighlighted];
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