ECSlidingViewController 缩放动画

Posted 2023-03-08

【中文标题】ECSlidingViewController 缩放动画

【英文标题】：ECSlidingViewController Zoom Animation

【发布时间】：2014-02-15 13:09:48

【问题描述】：

我正在尝试使用 ECSLidingViewController2 中的缩放动画设置滑动过渡。

就像在 TransitionFun 示例 (https://github.com/ECSlidingViewController/ECSlidingViewController/blob/master/Examples/TransitionFun/TransitionFun/METransitionsViewController.m) 中一样，我在我的 topView NavigationController 的 viewDidLoad 中执行此操作：

id<ECSlidingViewControllerDelegate> transition = [[MEZoomAnimationController alloc] init];
self.slidingViewController.delegate = transition;

self.slidingViewController.topViewAnchoredGesture = ECSlidingViewControllerAnchoredGestureTapping | ECSlidingViewControllerAnchoredGesturePanning;
self.slidingViewController.customAnchoredGestures = @[];
[self.navigationController.view removeGestureRecognizer:self.dynamicTransitionPanGesture];
[self.navigationController.view addGestureRecognizer:self.slidingViewController.panGesture];

我在 NavigationController 头文件中采用了 ECSlidingViewControllerDelegate 协议。

但它在 ECSlidingViewController.m 中崩溃，在此方法的第一个 if 条件下我收到 EXC_BAD_ACCESS(1) 错误：

- (CGRect)frameFromDelegateForViewController:(UIViewController *)viewController
                         topViewPosition:(ECSlidingViewControllerTopViewPosition)topViewPosition 
     CGRect frame = CGRectInfinite;

     if ([(NSObject *)self.delegate respondsToSelector:@selector(slidingViewController:layoutControllerForTopViewPosition:)]) 
    id<ECSlidingViewControllerLayout> layoutController = [self.delegate slidingViewController:self
                                                           layoutControllerForTopViewPosition:topViewPosition];

    if (layoutController) 
        frame = [layoutController slidingViewController:self
                                 frameForViewController:viewController
                                        topViewPosition:topViewPosition];
    


return frame;

有人遇到同样的问题吗？ 谢谢

【参考方案1】：

这就是我在视图控制器的 viewDidLoad: 方法中所做的，效果很好：

id<ECSlidingViewControllerDelegate> transition = self.zoomAnimationController;
self.slidingViewController.delegate = transition;
self.slidingViewController.topViewAnchoredGesture = ECSlidingViewControllerAnchoredGestureTapping | ECSlidingViewControllerAnchoredGesturePanning;
self.slidingViewController.customAnchoredGestures = @[];
[self.navigationController.view addGestureRecognizer:self.slidingViewController.panGesture];

如果您像我一样不尝试实现动态转换，则应该去掉上面写着的行：

[self.navigationController.viewremoveGestureRecognizer:self.dynamicTransitionPanGesture];

恕我直言，这可能导致您的 EXC_BAD_ACCESS(1) 错误，因为您实际上没有设置 dynamicTransitionPanGesture 手势识别器。

【讨论】：

谢谢，您的代码对我有用。但我认为`EXC_BAD_ACCES