Question

I have two UIbuttons,and I want to implement Longpressgesture on both.

So I wrote the below code..

-(void)viewdidLoad
{
 UILongPressGestureRecognizer *longPress = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(buttonLongPressed:)];
    longPress.minimumPressDuration = 0.5;
    [Button1 addGestureRecognizer:longPress];
    [Button2 addGestureRecognizer:longPress];

}

- (void)buttonLongPressed:(UILongPressGestureRecognizer *)sender
{    
    if(sender.state == UIGestureRecognizerStateBegan) 
    {        

    }   
}

now my doubt is how shall I check which button is longpresses?

Thanks
Ranjit

Answer 1

First, note that a gesture recognizer should be attached to just one view. You should create a new instance for each button.

To answer your question, you can add tag values to your buttons:

Button1.tag = 1000;
Button2.tag = 1001;

Then test them in the recognizer:

UIView *view = sender.view;
int tag = view.tag;

if (tag == 1000) {
...
}

You can enter any tag values, but I often start at a high value like 1000 to avoid clashes with any other tags that I assign in Interface Builder.

Another option is to use a different handling function for each recognizer.