Question

我正在使用以下代码从UIViewController调用“HelpviewController”，该代码正常运行。

self.pageViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"InnerHelpPageViewController"];
            self.pageViewController.dataSource = self;

            InnerHelpViewController *startingViewController = [self viewControllerAtIndex:0];
            NSArray *viewControllers = @[startingViewController];
            [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

            // Change the size of page view controller
            self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 30);

            [self addChildViewController:_pageViewController];
            [self.view addSubview:_pageViewController.view];
            [self.pageViewController didMoveToParentViewController:self];

在我的新控制器InnerHelpViewController内部，我已完成按钮，该按钮应删除此新添加的视图并将控制权发送回已启动的页面。

- (IBAction)unwindToMenuFromInnerHelp:(id)sender {
    [self.view removeFromSuperview];
}

此调用删除了新添加的视图，但问题是“MenuController”被冻结。我无法点击它。有什么帮助吗？

解释流程 - ＆gt;我有菜单屏幕，其中一个按钮名称为“help” - ＆gt;当用户点击此帮助按钮时，此问题中的第一段代码执行并显示HelpViewController - ＆gt;完成帮助后，用户点击“完成”按钮 - ＆gt;哪个应该关闭HelpViewController并移动到“菜单”屏幕。

Answer 1

在InnerHelpViewController.h文件类中实现协议方法

@protocol InnerHelpViewControllerDelegate

  -(void)removeCustomView;
@end

@interface InnerHelpViewController : UIViewController{

}
@property(nonatomic, weak) id<InnerHelpViewControllerDelegate> delegate.

在InnerHelpViewController.m文件中

@synthesize delegate;

- (IBAction)unwindToMenuFromInnerHelp:(id)sender {
    [delegate removeCustomView];
}

MenuController .h文件中的

采用InnerHelpViewControllerDelegate。

@interface MenuController : UIViewController<InnerHelpViewControllerDelegate>{

}

现在在helpviewcontroller对象创建时在MenuController.m文件中确认您的委托。

self.pageViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"InnerHelpPageViewController"];
            self.pageViewController.dataSource = self;

            InnerHelpViewController *startingViewController = [self viewControllerAtIndex:0];
            startingViewController.delegate = self;
            NSArray *viewControllers = @[startingViewController];
            [self.pageViewController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];

            // Change the size of page view controller
            self.pageViewController.view.frame = CGRectMake(0, 0, self.view.frame.size.width, self.view.frame.size.height - 30);

            [self addChildViewController:_pageViewController];
            [self.view addSubview:_pageViewController.view];
            [self.pageViewController didMoveToParentViewController:self];

//Implement here delegate method
     -(void)removeCustomView{
      [self.pageViewController removeFromSuperview]
    }

删除子视图并发回控制权

1 个答案: