How to pass argument to action in UIGestureRecognizer initWithTarget action - selector

Question

I am using the code below
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(processTap)];
- (void) processTap
{
//do something
}
But I need to send a data to processTap function. Is there anyway to do this?

Answer 1

Example:
UIImageView *myPhoto = [[UIImageView alloc] initWithImage: [UIImage imageNamed:#"tab-me-plese.png"]];
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(processTap:)];
[myPhoto setTag:1]; //set tag value
[myPhoto addGestureRecognizer:tap];
[myPhoto setUserInteractionEnabled:YES];
- (void)processTap:(UIGestureRecognizer *)sender
{
NSLog(#"tabbed!!");
NSLog(#"%d", sender.view.tag);
}

Answer 2

There's a good answer to a similar question at iOS - UITapGestureRecognizer - Selector with Arguments, but if you want to pass data that you don't want to attach to the view, I recommend creating a second function that has access to the data you need. For example:
UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:#selector(passDataToProcessTap)];
- (void)passDataToProcessTap {
[self processTapWithArgument:self.infoToPass];
// Another option is to use a static variable,
// Or if it's not dynamic data, you can just hard code it
}
- (void) processTapWithArgument:(id)argument {
//do something
}