iOS 在NavigationController 基类中 自定义全局后退按钮 且 开启手势后退

设置全局后退按钮,要写一个基类 ,继承自UINavigationController;

这里就以leftBarButtonItems 为例, 其他也是一样的;

单个的也能设置哦!!!

///重写push方法 push的控制器隐藏tabbar

- (void)pushViewController:(UIViewController *)viewController animated:(BOOL)animated

{

    // 隐藏tabbar

    viewController.hidesBottomBarWhenPushed =YES;

 

     //1.添加后退按钮

    [selfaddBackButton:viewController];

    

    [superpushViewController:viewControlleranimated:animated];

}

//2 自定义后退按钮

- (void)addBackButton:(UIViewController *)viewController {

    

    

    //开启手势后退

//    self.interactivePopGestureRecognizer.delegate = (id)self;

    //开启手势滑动后退

    if ([selfrespondsToSelector:@selector(interactivePopGestureRecognizer)]) {

        self.interactivePopGestureRecognizer.enabled = YES;

    }

    

    UIBarButtonItem *back = [[UIBarButtonItemalloc] initWithImage:[UIImageimageNamed:@"backImage"]style:UIBarButtonItemStylePlaintarget:selfaction:@selector(backClick)];

    

    //间距

    UIBarButtonItem *fixed = [[UIBarButtonItemalloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpacetarget:nilaction:nil];

    fixed.width = -10;

    

    viewController.navigationItem.leftBarButtonItems =@[fixed,back];

}

//点击后退的时候执行的方法

- (void)backClick {

    [selfpopViewControllerAnimated:YES];

}