How to add a instance variable and use it in a custom UIButton

Question

I created a custom UIButton like this

@interface CustomButton : UIButton {

    NSString *firstLine;
    NSString *secondLine;
}
@property (nonatomic, retain) NSString *firstLine;
@property (nonatomic, retain) NSString *secondLine;

@end

CustomButton* rightButton = [CustomButton buttonWithType:UIButtonTypeDetailDisclosure];
rightButton.secondLine=@"hello";

error message is:

* Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '* -[UIButton setSecondLine:]: unrecognized selector sent to instance 0x43280e0'

What has to be done to fix this up? how should the instance variable added?

rightButton.secondLine = @"hello". Sorry all. That was a typo error. I will update the question now. — thndrkiss

Tilo Mitra Tilo Mitra · Accepted Answer · 2010-04-23T13:40:52

Well if that is all thats in your CustomButton implementation, it seems that the String is not getting placed into the Button. How are you laying out the subviews of the button?

How to add a instance variable and use it in a custom UIButton

2 Answers