SideMenu 和 UIPageViewController 上的 UIPanGestureRecognizer 拦截答案

【问题标题】：UIPanGestureRecognizer interception on SideMenu and UIPageViewControllerSideMenu 和 UIPageViewController 上的 UIPanGestureRecognizer 拦截
【发布时间】：2016-04-25 23:48:07
【问题描述】：

我在向右滑动时出现了 leftMenu，我希望在向左滑动整个页面时改变我的标签。

他们的 UIPanGestureRecognizer 拦截，我试过禁用 UIPageViewController 的 UIScrollView 的弹跳，试过 requireGestureRecognizerToFail：

但我无法让它们都起作用。我想要的是当它被滑动到右侧菜单时出现。侧边菜单打开时向左滑动会关闭，否则页面会改变。

我的示例代码如下；

 for(UIScrollView *view in self.pageViewController.view.subviews)
 {
    if ([view isKindOfClass:[UIScrollView class]])
    {
       UIScrollView *scrollView = (UIScrollView *)view;

       AppDelegate *appDel = [UIApplication sharedApplication].delegate;

       UIPanGestureRecognizer* panGestureRecognizer = scrollView.panGestureRecognizer;
       [panGestureRecognizer addTarget:self action:@selector(move:)];
       [panGestureRecognizer requireGestureRecognizerToFail:appDel.slidingViewController.panGesture];
    }
 }

提前致谢

【问题讨论】：

标签： ios objective-c uiscrollview uipageviewcontroller uipangesturerecognizer

【解决方案1】：

类似下面的东西应该可以工作（警告：未经测试！）

- (void)viewDidLoad
{
    [super viewDidLoad];

    UIPanGestureRecognizer *panRecognizer = [[UIPanGestureRecognizer alloc] initWithTarget:self action:@selector(panRecognized:)];
    panRecognizer.delegate = self;

    for (UIGestureRecognizer *recognizer in self.pageViewController.gestureRecognizers)
        [recognizer requireGestureRecognizerToFail:panRecognizer];
}

- (BOOL)gestureRecognizerShouldBegin:(UIGestureRecognizer *)recogniser
{
    if (self.leftMenuShowing)
        return YES;
    else
    {
        UIPanGestureRecognizer *panRecognizer = (id)recognizer;
        CGPoint translation = [panRecognizer translationInView:self.view];
        return (translation.x > 0);
    }
}

- (void)panRecognized:(UIPanGestureRecognizer *panRecognizer)
{
    if (state == UIGestureRecognizerStateBegan || state == UIGestureRecognizerStateChanged)
    {
        // if pan is to left, move leftMenu offscreen
        // if pan is to right, move leftMenu onscreen
    }
    else
    {
        // if leftMenu is mostly onscreen, animate completely onscreen
        // if leftMenu is mostly offscreen, animate completely offscreen
    }
}

【讨论】：