导航返回显示转换期间的其他Viewcontroller

Question

我有三个Viewcontrollers：ViewControllerA，ViewControllerB和ViewControllerC。

当我在 ViewControllerC 时，点击导航返回按钮直接返回ViewControllerA，跳过 ViewControllerB 。

我尝试了以下方法，两者都有效。但是，我想知道从ViewController C转换到ViewController A时，它会在转换过程中一秒钟显示ViewController B.

有没有办法直接从ViewController C导航到ViewController A跳过ViewControllerB。

方法1：

-(void) viewWillDisappear:(BOOL)animated {
   if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
      NSLog(@"back button pressed");
      [self.navigationController popViewControllerAnimated:YES];
   }
  [super viewWillDisappear:animated];
}

方法2：

-(void) viewWillDisappear:(BOOL)animated {
    if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) {
        NSLog(@"back button pressed");
        //[self.navigationController popViewControllerAnimated:YES];
        NSMutableArray *allViewControllers = [NSMutableArray arrayWithArray:[self.navigationController viewControllers]];
        for (UIViewController *aViewController in allViewControllers) {
            if ([aViewController isKindOfClass:[ViewControllerA class]]) {
                [self.navigationController popToViewController:aViewController animated:NO];
            }
        }
    }
    [super viewWillDisappear:animated];
}

Answer 1

您需要使用setViewControllers方法，并且只传递viewControllerA，它是navigationController.viewControllers数组中的第一个元素

<强>代码

- (IBAction)backAction:(id)sender {
    UIViewController * viewControllerA = [self.navigationController.viewControllers firstObject]; //we get the first viewController here
    [self.navigationController setViewControllers:@[viewControllerA] animated:YES];
}

类似的答案How to start from a non-initial NavigationController scene但快速

Answer 2

试试popToRootViewControllerAnimated。它将移动到NavigationController嵌入的First ViewController。

[self.navigationController popToRootViewControllerAnimated:YES];

Answer 3

        NSArray *arrayViewControllers = [self.navigationController viewControllers];


        for (UIViewController *viewcontroller in arrayViewControllers) {
            if ([viewcontroller isKindOfClass:[ViewControllerA class]]) {
                [self.navigationController popToViewController:viewcontroller animated:true];
            }
        }