How to stop UIPanGestureRecognizer when object moved to certain frame

Question

I have an object of image type which I am moving using UIPanGestureRecognizer, and I need to stop recognizing the UIPanGestureRecognizer when the object reaches a certain frame.

Answer 1

UIGestureRecognizers have an enabled property. Documentation:

Disables a gesture recognizers so it does not receive touches. The default value is YES. If you change this property to NO while a gesture recognizer is currently recognizing a gesture, the gesture recognizer transitions to a cancelled state.

EDIT:

Just set the enabled property to NO.

gestureRecognizer.enabled = NO;

Answer 2

Set the pangesture.delegate=self, and implement delegate method

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)gestureRecognizer
{
     //return NO when you reach the frame
}

Answer 3

When you need to stop your UIPanGestureRecognizer from recognizing gesture, you just put this code line (as jbat100 said) in -(void)move:(UIPanGestureRecognizer *)gestureRecognizer:

gestureRecognizer.enabled = NO;

after this line your gestureRecognizer state set as "UIGestureRecognizerStateCancelled"

then just add couple lines to your -(void)move:(UIPanGestureRecognizer *)gestureRecognizer function:

if ([gestureRecognizer state] == UIGestureRecognizerStateCancelled) {
     gestureRecognizer.enabled = YES;
}

and you'll be able to work with your gesture recognizer

EDIT:

Here's code snippet:

- (void)move:(UIPanGestureRecognizer *)gestureRecognizer {
    BOOL cancelPanGesture = YES;
    if (cancelPanGesture) {
        /* 
         After this line gesture recognizer will be disabled, state will be UIGestureRecognizerStateCancelled
         and this method (move:) will fire one more time.
         */
        gestureRecognizer.enabled = NO;
    }
    if (gestureRecognizer.state == UIGestureRecognizerStateCancelled) {
        gestureRecognizer.enabled = YES;
    }
}