大伙都是怎样处理 navigation 的 interactivePopGestureRecognizer 的？

[yfmir]

事情起因是因为自定义了leftItem之后pop手势失效，然后重新对interactivePopGestureRecognizer的delegate进行重新赋值。

问题是当在topView的时候触发pop手势（沿着屏幕左边缘右滑），然后再进行push操作（比如说点击tableView某一行进入下一页），会出现push动画失效的情况，即UI还是在当前页，home键后重新进入恢复正常。

[kobe1941]

在BaseViewController里开启或禁用

-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
if ([self.navigationController respondsToSelector:@selector(interactivePopGestureRecognizer)]) {
if ([self.navigationController.viewControllers count] > 1) {
self.navigationController.interactivePopGestureRecognizer.enabled = YES;
self.navigationController.interactivePopGestureRecognizer.delegate = self;
}else{

self.navigationController.interactivePopGestureRecognizer.enabled = NO;
self.navigationController.interactivePopGestureRecognizer.delegate = nil;
}
}
}

[Zrocky]

我是在自定义的NavigationController中写的
- (void)viewDidLoad {
[super viewDidLoad];

self.delegate = self;

self.popGestureDelegate = self.interactivePopGestureRecognizer.delegate;
}


#pragma mark - UINavigationControllerDelegate

- (void)navigationController:(UINavigationController *)navigationController didShowViewController:(UIViewController *)viewController animated:(BOOL)animated {

if (viewController == self.viewControllers[0]) {
self.interactivePopGestureRecognizer.delegate = self.popGestureDelegate;
}else {
self.interactivePopGestureRecognizer.delegate = nil;
}
}

[yfmir]

@kobe1941 感谢，经测试可行

[yfmir]

@Zrocky 我之前也考虑过这种方案，但是对我这个项目不太可行
之前把delegate抽成单例了，以为是我自己少实现了什么方法，结果钻牛角尖了