CODEWITHSUNDEEP
iphoneobjective-ciosipad
aherlambang
aherlambang

Reputation: 14418

check if pinch is released in UIPinchGestureRecognizer

How do I check if a pinch has been released? I tried

- (IBAction)resizeImage:(UIPinchGestureRecognizer *)sender
{
   if (sender.delaysTouchesEnded)
   //here
}

and it didn't work out

Upvotes: 1

Views: 1469

Answers (2)

MGM
MGM

Reputation: 2375

UIAdam's answer worked for me...

    if([(UIPinchGestureRecognizer *)sender state] == UIGestureRecognizerStateEnded)
    {

    }

This is my complete method with zoom (CGAffineTransformScale)

(self.pictureCard01 is a UIView subclass which I'm pinching)

   - (IBAction)PinchGesture01:(UIGestureRecognizer *)sender {
                CGFloat factor = [(UIPinchGestureRecognizer *)sender scale];
                if (factor > 2) {
                    factor = 2;
                }
                else if (factor < 1) {
                    factor = 1;
                }

                [UIView animateWithDuration:2 delay:0.0 options:UIViewAnimationOptionAllowAnimatedContent
                animations:^{
                    self.pictureCard01.transform = CGAffineTransformScale(CGAffineTransformIdentity, factor, factor);
                }
                completion:nil];

                if([(UIPinchGestureRecognizer *)sender state] == UIGestureRecognizerStateEnded)
                {
                    [self performSelector:@selector(resize:) withObject:self.pictureCard01 afterDelay:2];
                }
            }

      -(void)resize:(UIView*)myview{

                    [UIView animateWithDuration:2 delay:0.0 options:UIViewAnimationOptionAllowAnimatedContent
                                     animations:^{
                                         myview.transform = CGAffineTransformScale(CGAffineTransformIdentity, 1, 1);
                                     }
                                     completion:nil];
                }

Upvotes: 2

UIAdam
UIAdam

Reputation: 5313

You need to check for sender.state == UIGestureRecognizerStateEnded and possibly sender.state == UIGestureRecognizerStateCancelled

Upvotes: 7

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