Cancel the gesture handler temporary

Question

I get gesture like this in mainScene

// listen for swipes to the left
UISwipeGestureRecognizer * swipeLeft= [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipeLeft)];
swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[[[CCDirector sharedDirector] view] addGestureRecognizer:swipeLeft];

// listen for swipes to the right
UISwipeGestureRecognizer * swipeRight= [[UISwipeGestureRecognizer alloc]initWithTarget:self action:@selector(swipeRight)];
swipeRight.direction = UISwipeGestureRecognizerDirectionRight;
[[[CCDirector sharedDirector] view] addGestureRecognizer:swipeRight];

and I added newLayer(CCNode) like layer on this mainScene

[mainScene addChild:newLayer];

When I swipe on newLayer, mainScene gesture handler is called.

I want to off the mainScene's swipe gesture handler during newLayer is added.

How can I make it ?

Answer 1

You might want to look into the gestureRecognizer:shouldReceiveTouch: or any of the other methods specified by the UIGestureRecognizerDelegate protocol as seen here UIGestureRecognizerDelegate Protocol Reference

For example you might try...

static NSMutableArray *_swipes;
static BOOL _shouldCancel;

- (void)viewDidLoad {
    _swipes = @[].mutableCopy;
    _shouldCancel = YES;
    for(UIGestureRecognizer *gesture in [mainScene gestureRecognizers]) {
        if([gesture isKindOfClass:[UISwipeGestureRecognizer class]]) {
            gesture.delegate = (id)self;
            [_swipes addObject:gesture];
        }
    }
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {
    return ![_swipes containsObject:gestureRecognizer] && _shouldCancel;
}

This way you can modify _shouldCancel to be NO or YES depending on when you want the swipe to be disabled.