Question

我有一个主要的动作视图控制器，并且有按钮“查看”。查看Button的功能是：

 - (IBAction)btnReview:(id)sender
{
    ReviewViewController *vc = [[ReviewViewController alloc]initWithNibName:@"ReviewViewController" bundle:nil];
    [self addChildViewController:vc];
    [vc didMoveToParentViewController:self];
    [self.view addSubview:vc.view];
}

现在在评论页面上，我有一个按钮。在该按钮的动作上，我想切换回父视图控制器。应显示其视图。我尝试过以下代码，它会暂停或崩溃应用程序。

[self didMoveToParentViewController:nil];
[self.view removeFromSuperview];
[self removeFromParentViewController];

我甚至尝试过：

[self dismissModalViewControllerAnimated:YES]

我也阅读过与此问题相关的其他帖子，但找不到满意的答案。请帮助！

Answer 1

我假设这是一个自定义的viewcontroller容器，你正在尝试构建，＆＃34; self＆＃34;是你正在谈论的主要动作viewController。

试试这个：

- (IBAction)btnReview:(id)sender
{
    ReviewViewController *vc = [[ReviewViewController alloc]initWithNibName:@"ReviewViewController" bundle:nil];

    [self addChildViewController:vc];

    [self.view addSubview:vc.view];

    [vc didMoveToParentViewController:self];

    vc = nil;

}

对于＆＃34; Back＆＃34;按钮，我假设这是从Review viewController返回Main Actions viewController的Button，试试这个：

- (IBAction)btnReviewHide:(id)sender
 {

    [self willMoveToParentViewController:nil];
    [self.view removeFromSuperview];
    [self removeFromParentViewController];

 }

希望这有帮助。

Answer 2

你应该使用委托。当您点击ReviewViewController中的按钮时，您会调用以下方法：[self.delegate hideReviewController:self];

这种方法看起来像：

- (void)hideReviewController:(ReviewViewController *)controller {
                [UIView animateWithDuration:0.3
                                  delay:0
                                options:UIViewAnimationOptionCurveEaseInOut
                             animations:^{
                                  controller.view.alpha = 0;
                             } completion:^(BOOL finished) {
                                  [self.view removeSubview:controller.view];
                                  // If you want the Review Controller to be deallocated:
                                  [self removeChildViewController:controller];
                             }];
}

修改在ReviewDelegate.h文件中添加：

@class ReviewViewController; @protocol ReviewDelegate <NSObject> - (void)hideReviewController:(ReviewViewController *)controller; @end

然后添加此属性：

@property (nonatomic, weak) id <ReviewDelegate> delegate;

在父类中：

- (IBAction)btnReview:(id)sender { ReviewViewController *vc = [[ReviewViewController alloc]initWithNibName:@"ReviewViewController" bundle:nil]; vc.delegate = self; [self addChildViewController:vc]; [vc didMoveToParentViewController:self]; [self.view addSubview:vc.view]; } - (void)hideReviewController:(ReviewViewController *)controller { [UIView animateWithDuration:0.3 delay:0 options:UIViewAnimationOptionCurveEaseInOut animations:^{ controller.view.alpha = 0; } completion:^(BOOL finished) { [self.view removeSubview:controller.view]; // If you want the Review Controller to be deallocated: [self removeChildViewController:controller]; }]; }

我还建议您阅读delegation

Answer 3

试试这个

self.view=nil;
[self willMoveToParentViewController:nil];
[self.view removeFromSuperview];
[self removeFromParentViewController];

Answer 4

你不需要让它变得复杂......只需使用UINavigationController即可。

从ParentVC导航到ChildVC：

  ChildViewController *ChildVC = [[ChildViewController alloc]initWithNibName:@"ChildViewController" bundle:nil];
[self.navigationController pushViewController:ChildVC animated:YES];

从ChildVC导航回ParentVC：

ParentViewController *ParentVC = [[ParentViewController alloc]initWithNibName:@"ParentViewController" bundle:nil];

[self.navigationController popViewControllerAnimated:YES];

Answer 5

由于您要将子视图作为子视图添加到父级，您需要从其超级视图（在您的情况下为父视图）中手动设置。而不是将其添加为子视图，您可以使用presentViewController方法，如下所示：

 - (IBAction)btnReview:(id)sender
  {

   ReviewViewController *vc = [[ReviewViewController alloc] initWithNibName:@"ReviewViewController" bundle:nil];
   [self presentViewController:vc
                      animated:YES
                    completion:nil];
  }

并且在后退按钮的子类代码中将是：

  -(IBAction)backButtonClicked:(id)sender
  {
      [self dismissViewControllerAnimated:YES completion:nil];
  }

Answer 6

听起来像你正在寻找的东西可以用UINavigationController来处理。只需使用pushViewController:将新视图推送到屏幕上即可。然后，视图顶部的导航栏中将出现一个后退按钮，可用于返回“父”视图控制器。

请参阅documentation。

Answer 7

仅写作

- (IBAction)backbutton:(id)sender {
    [self.navigationController popToRootViewControllerAnimated:YES];
}

在我的案例中工作

从子视图控制器转移到父视图控制器 - iOS

7 个答案: