监听UINavigationController 滑动返回手势

最新推荐文章于 2022-06-06 15:51:53 发布

转载最新推荐文章于 2022-06-06 15:51:53 发布 · 378 阅读

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原文链接：https://juejin.im/post/5a31d5776fb9a045055e231e

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#swift #游戏

###1、添加代理 UINavigationControllerDelegate

- (void)viewWillAppear:(BOOL)animated{
    [super viewWillAppear:animated];
    [self.navigationController.navigationBar setHidden:YES];
    if ([[[UIDevice currentDevice] systemVersion] floatValue] > 7.0) {
        self.navigationController.delegate = self;
    }
}

- (void)viewWillDisappear:(BOOL)animated{
    if ([[[UIDevice currentDevice] systemVersion] floatValue] > 7.0) {
        self.navigationController.delegate = nil;
    }
}
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###2、实现代理方法

//监听滑动手势
- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated{
    id <UIViewControllerTransitionCoordinator>tc = navigationController.topViewController.transitionCoordinator;
    [tc notifyWhenInteractionChangesUsingBlock:^(id<UIViewControllerTransitionCoordinatorContext>  _Nonnull context) {
        [dataKit kit].reloadFlage = [context isCancelled];
    }];
}
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###[context isCancelled] 是BOOL类型，未返回[context isCancelled]==YES，返回成功[context isCancelled]==NO。 ###点击按钮返回或使用 [navigationController popviewcontorller] 不进入此回调。

转载于:https://juejin.im/post/5a31d5776fb9a045055e231e