UIPageViewController和UISwipeGestureRecognizer

Question

我在UIPageViewController上有几个页面。每个页面都是从自己的视图创建的，该视图具有嵌套视图。其中一个是形象。我希望有一个控制方式，用户可以通过刷除除图像之外的所有内容来更改页面。在图像上滑动将更改图像，而不是页面。

我怎样才能做到这一点？我已将UISwipeGestureRecognizer添加到图片中，将userInteraction设置为YES，但刷卡会通过并导致翻页。

我在视图加载方法（awakeFromNib）中有这段代码

UISwipeGestureRecognizer *swipeGestureRight = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(changeImageRight)];
[swipeGestureRight setDirection:UISwipeGestureRecognizerDirectionRight];
swipeGestureRight.delegate = self;
swipeGestureRight.numberOfTouchesRequired = 1;
[self.image addGestureRecognizer:swipeGestureRight];

Answer 1

这样的事情可以帮到你：

- (BOOL) gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    if (gestureRecognizer == self){
        if ([otherGestureRecognizer isMemberOfClass:self.class]){
            if ([self isGestureRecognizerInSuperviewHierarchy:otherGestureRecognizer]){
                return YES;
            } else if ([self isGestureRecognizerInSiblings:otherGestureRecognizer]){
                return YES;
            }
        }
    }
    return NO;
}

- (BOOL) isGestureRecognizerInSiblings:(UIGestureRecognizer *)recognizer{
    UIView *superview = self.view.superview;
    NSUInteger index = [superview.subviews indexOfObject:self.view];
    if (index != NSNotFound){
    for (int i = 0; i < index; i++){
            UIView *sibling = superview.subviews[i];
            for (UIGestureRecognizer *viewRecognizer in sibling.gestureRecognizers){
                if (recognizer == viewRecognizer){
                    return YES;
                }
            }
        }
    }
    return NO;
}
- (BOOL) isGestureRecognizerInSuperviewHierarchy:(UIGestureRecognizer *)recognizer{
    if (!recognizer) return NO;
    if (!self.view) return NO;
    //Check siblings
    UIView *superview = self.view;
    while (YES) {
        superview = superview.superview;
        if (!superview) return NO;
        for (UIGestureRecognizer *viewRecognizer in superview.gestureRecognizers){
            if (recognizer == viewRecognizer){
                return YES;
            }
        }
    }
}

- (BOOL) gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer{
    if ([gestureRecognizer respondsToSelector:@selector(gestureRecognizer:shouldBeRequiredToFailByGestureRecognizer:)]){
        return [(id <UIGestureRecognizerDelegate>)gestureRecognizer gestureRecognizer:gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:otherGestureRecognizer];
    }
    return NO;
}