暂时取消手势处理程序

Question

我在mainScene中得到这样的手势

// 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];

我在这个mainScene

上添加了newLayer（CCNode）

[mainScene addChild:newLayer];

当我在newLayer上滑动时，会调用mainScene手势处理程序。

我想在添加newLayer时关闭mainScene的滑动手势处理程序。

我该怎么做？

Answer 1

您可能希望查看gestureRecognizer:shouldReceiveTouch:或UIGestureRecognizerDelegate协议指定的任何其他方法，如UIGestureRecognizerDelegate Protocol Reference所示

例如，您可以尝试...

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;
}

这样，您可以将_shouldCancel修改为NO或YES，具体取决于您希望禁用滑动的时间。