Objective C: Sending arguments to a method called by a UIButton

Question

I have a method that is being called when a UIButton is clicked. When I create the button I want it to store an NSTimer as an argument.

This is the timer and the cr

Answer 1

You could take the approach where you extend UIButton.

@interface MyButton : UIButton
@property (nonatomic, retain) NSDictionary *userInfo;
@end

Then your method

- (void)foo:(MyButton *)sender{
    NSLog(@"%@", [sender.userInfo valueForKeyPath:@"extraData"]);
}

And to set userInfo

...
MyButton *myButton = (MyButton *)[UIButton buttonWithType:UIButtonTypeCustom];
//set up a dictionary with info, called userInfo
myButton.userInfo = userInfo;
[myButton addTarget:self selector:@selector(foo:) forControlEvent:UIControlEventTouchUpInside];

Would that work for you?