UIPanGestureRecognizer not calling End state

问题

using UIPanGestureRecognizer we are moving the cells in the UICollectionView

When we started dragging UIGestureRecognizerStateBegan is called. but when we still holds the dragging cell and presses the Home Button in ipad, the UIPanGestureRecognizer not calling UIGestureRecognizerStateEnded or UIGestureRecognizerStateFailed or UIGestureRecognizerStateCancelled, not even calling gesture method

- (void)handlePanGesture:(UIPanGestureRecognizer *)gestureRecognizer;

When i opened my app from background the cell is at the same place in the view but am not able to perform any actions on it. this is because of UIPanGestureRecognizer not calling the gestureStates.

How to end my UIPanGestureRecognizer when user presses the home button.

回答1:

try this

    - (void)applicationWillResignActive:(UIApplication *)application {

        [self.window setUserInteractionEnabled:NO];

    }



    - (void)applicationDidBecomeActive:(UIApplication *)application {

        [self.window setUserInteractionEnabled:YES];
    }

来源：https://stackoverflow.com/questions/22247920/uipangesturerecognizer-not-calling-end-state