CODEWITHSUNDEEP
iosobjective-cxcode5
Rahul
Rahul

Reputation: 49

How to find if CALayer is double clicked in ios

I developed a 3d cube consist of 6 layer side by side to form a cube type structure. I am getting the single tap using touch event but the double tap is not working.

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event 
{
    if ([touches count] == 1) 
    {
        NSLog(@"Single tap");
    }
   if ([touches count] == 2) 
    {
      NSLog(@"Double tap");  // Not Working
    }
}

How can i get the double tap working ?

Upvotes: 0

Views: 131

Answers (1)

joao.arruda
joao.arruda

Reputation: 397

Besides being able to recognize a tap gesture in your app, you’ll probably want to distinguish a single tap, a double tap, or even a triple tap. Use a touch’stapCountproperty to determine the number of times the user tapped a view.

Each touch returned in the NSSet is not exactly a tap. The OS recognize a double tap and returns it as one UITouch, so you can try to handle the event after the touch ended by using:

- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
    for (UITouch *aTouch in touches) {
        if (aTouch.tapCount >= 2) {
             // The view responds to the tap
             [self respondToDoubleTapGesture:aTouch];
        }
    }
}

If it still doesn't work and you are using UITapGestureRecognizer take a look at the property numberOfTapsRequired. If it is set to 1, try to change it to 2.

yourTapRecognizer.numberOfTapsRequired = 2;

The Apple Dev documentation may also help you understand how to use the UIGestureRecognizers correctly.

Upvotes: 2

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