Question

这是我的问题：我在星期模式下实现了一个日历，在页面模式下使用UIPageViewController完成了几周之间的导航（非常类似于iPad的标准日历）。除非用户中止页面导航，否则一切正常。因此，如果日历显示当前周并且用户手指在下周显示，但随后中止手势并且他没有翻页，则数据源仍将显示下周，而不是停留在当前周。< / p>

我尝试使用方法

        - (void)pageViewController:(UIPageViewController *)pageViewController    
                didFinishAnimating:(BOOL)finished 
           previousViewControllers:(NSArray*)previousViewControllers
               transitionCompleted:(BOOL)completed

并检测何时中止pangesture然后手动重置前一个viewcontroller但结果并不好。

这是我的数据源和委托方法的代码

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController
      viewControllerBeforeViewController:(UIViewController *)viewController
{
    if (_pageIsAnimating) {
        return nil;
    }    
    [[MCalendarManager sharedCalendar] previousWeek];

    MCalendarContentViewController * contentViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"CalendarContentViewController"];

    return contentViewController;
}

- (UIViewController *)pageViewController:(UIPageViewController *)pageViewController
       viewControllerAfterViewController:(UIViewController *)viewController
{
    if (_pageIsAnimating) {
        return nil;
    } 


    [[MCalendarManager sharedCalendar] nextWeek];

    MCalendarContentViewController * contentViewController = [self.storyboard  instantiateViewControllerWithIdentifier:@"CalendarContentViewController"];


    return contentViewController;
}

- (void)pageViewController:(UIPageViewController *)pageViewController  willTransitionToViewControllers:(NSArray *)pendingViewControllers
{
    _pageIsAnimating = YES;
}

- (void)pageViewController:(UIPageViewController *)pageViewController
        didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers
       transitionCompleted:(BOOL)completed
{

    if (completed || finished) {  // Turn is either finished or aborted
        _pageIsAnimating = NO;
    }

    if (finished && !completed) {//Turn is aborted

        //Do something here for not changing the viewcontroller
    }
}

有没有人知道如何解决这个问题？

提前致谢。

此致

UIPageViewController：当用户中止pangesture时显示错误

0 个答案: