Question

I have a UIButton, and I want call a method when I click it.

[button addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside]

Meanwhile, I need to pass the tag of UIButton to the click function;

- (void) click : (NSInteger) tag{
    NSLog(@"%d tag button clicked",tag);
}

But how can I pass the tag param?

Answer 1

Selectors are the names of messages. They do not carry data. The solution to your problem is as follows:

- (void)click:(id)sender
{
   NSLog("%d tag button clicked", [sender tag])
}