分类导航

iOS 发布时间：2022-03-30 发布网站：大佬教程 code.js-code.com

大佬教程收集整理的这篇文章主要介绍了ios7 – 使用自定义后退按钮滑动手势会冻结根视图控制器，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。

我在我的应用程序上都有自定义后退按钮,它看起来像导航控制器不喜欢它.

所以,我希望iOS7滑动到后退手势与我的自定义后退按钮一起工作.搜索并尝试了不同的方式,但似乎没有一个很有希望.我能得到的最接近的是http://keighl.com/post/ios7-interactive-pop-gesture-custom-back-button/.
但是,现在当我继续推送并弹出导航堆栈时,堆栈中的rootViewController会停止响应任何触摸.

有什么建议？

解决方法

像keighl建议的那样,对UINavigationController进行子类化是正确的方法.但他错过了对根视图控制器的检查,以避免在根视图上执行手势时冻结.
这是一个带有附加检查的修改版本：

CBNavigationController.h：

#import <UIKit/UIKit.h>

@interface CBNavigationController : UINavigationController <UIGestureRecognizerDelegate,UINavigationControllerDelegate>
@end

CBNavigationController.m：

#import "CBNavigationController.h"

@interface CBNavigationController ()
@end

@implementation CBNavigationController
- (void)viewDidLoad
{
    NSLog(@"%s",__FUNCTION__);
    __weak CBNavigationController *weakSelf = self;

    if ([self respondsToSELEctor:@SELEctor(interactivePopGestureRecognizer)])
    {
        self.interactivePopGestureRecognizer.delegate = weakSelf;
        self.delegate = weakSelf;
    }
}

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    NSLog(@"%s",__FUNCTION__);

    if ([self respondsToSELEctor:@SELEctor(interactivePopGestureRecognizer)])
        self.interactivePopGestureRecognizer.enabled = NO;

    [super pushViewController:viewController animated:animated];
}

#pragma mark UINavigationControllerDelegate

- (void)navigationController:(UINavigationController *)navigationController
       didShowViewController:(UIViewController *)viewController
                    animated:(BOOL)animate
{
    NSLog(@"%s",__FUNCTION__);

    // Enable the gesture again once the new controller is shown AND is not the root view controller
    if (viewController == self.viewControllers.firstObject)
    {
        if ([self respondsToSELEctor:@SELEctor(interactivePopGestureRecognizer)])
            self.interactivePopGestureRecognizer.enabled = NO;
    }
    else
    {
        if ([self respondsToSELEctor:@SELEctor(interactivePopGestureRecognizer)])
            self.interactivePopGestureRecognizer.enabled = YES;
    }
}

@end