UINavigationController interactivePopGestureRecognizer在iOS7中工作异常

Question

在iOS7中，我们有一个新的“向左滑动”手势，这是一个非常有用的功能，但现在我有一个问题。

我使用此代码自定义UINavigationBar中的后退按钮。

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithCustomView:view];

但这将禁用“从左向右滑动”手势，因此我使用以下代码来保持手势的启用。

self.navigationController.interactivePopGestureRecognizer.delegate = self

然后，我发现手势工作异常，如果当前的ViewController有一个tableView，当tableView滚动时，手势将不会被触发。现在手势无法轻易触发，是否有某种方法可以修复它？

Answer 1

这段代码对我来说很有用。

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return YES;
}

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldBeRequiredToFailByGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer
{
    return [gestureRecognizer isKindOfClass:UIScreenEdgePanGestureRecognizer.class];
}

Answer 2

将interactivePopGestureRecognizer.delegate设置为self只是第一步。第二步是实施

-(BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldRecognizeSimultaneouslyWithGestureRecognizer:(UIGestureRecognizer *)otherGestureRecognizer {
    return ![otherGestureRecognizer isKindOfClass:UIPanGestureRecognizer.class];
}

当交互式弹出正在进行时，需要针对平移手势识别器的测试来阻止滚动或表格视图的垂直滚动。

Answer 3

添加类控制器“UIGestureRecognizerDelegate”

在ViewDidAppear中添加

override func viewDidAppear(animated: Bool) {
    super.viewDidAppear(animated)

    self.navigationController?.interactivePopGestureRecognizer.delegate =  self
}

=)