Ios 从另一个视图控制器关闭键盘

我正在使用将视图控制器分段

我有一个名为

PlaceReviewsVC

的视图控制器，其中我添加了文本视图以供查看。为了发布此评论，我将在

navigationItem添加
post
UIBarButtonim

的条形按钮实例。RightBarButtonim位于我的

placeDetailSegmentController

中，它们是

SJSegmentedViewController

的实例

现在的问题是，当我点击post按钮时，我无法关闭键盘

我尝试了下面的代码来在分段视图控制器中添加post按钮

let headerVC = PlaceImagesVC.viewController()

let reviewVC = PlaceReviewsVC.viewController()
reviewVC.delegate = self
reviewVC.title = "Reviews"

let placeDetailSegmentController = SJSegmentedViewController()     
placeDetailSegmentController.delegate = self
placeDetailSegmentController.title = "Pedal Studio"
placeDetailSegmentController.headerViewController = headerVC
placeDetailSegmentController.segmentControllers = [reviewVC]
placeDetailSegmentController.headerViewHeight = 280
placeDetailSegmentController.selectedSegmentViewHeight = 2.0
placeDetailSegmentController.selectedSegmentViewColor = .white

let button = UIButton(type: .custom)
button.setImage(#imageLiteral(resourceName: "icon_back").withRenderingMode(.alwaysTemplate), for: .normal)
button.tintColor = .white
button.addTarget(self, action:#selector(backButtonTapped), for:.touchUpInside)
button.frame = CGRect(x: 0, y: 0, width: 20, height: 20)
button.contentMode = .scaleAspectFit
button.imageEdgeInsets = UIEdgeInsets(top: 5, left: 5, bottom: 5, right: 5)
let leftButton = UIBarButtonItem(customView: button)

placeDetailSegmentController.navigationItem.leftBarButtonItem = leftButton            

let btnPost = UIButton(type: .custom)
btnPost.setTitle("POST", for: .normal)
btnPost.addTarget(self, action:#selector(btnPostTapped), for:.touchUpInside)
btnPost.titleLabel?.setFont(Typography.getFont(.PoppinsMedium, size: 12.0), .white)
btnPost.setTitleColor(.menuColor, for: .normal)
btnPost.setTitleColor(.darkGray, for: .highlighted)
btnPost.contentMode = .scaleAspectFit
let rightButton = UIBarButtonItem(customView: btnPost)

placeDetailSegmentController.navigationItem.rightBarButtonItem = rightButton

self.navigationController?.pushViewController(placeDetailSegmentController, animated: true)

在

btnposttaped

方法中，我编写了以下代码来关闭键盘。但是没有起作用

@objc func btnPostTapped() {
    self.view.endEditing(true)
}

如何将键盘从一个视图控制器切换到另一个视图控制器

---

您应按如下方式更改代码以关闭键盘：

@objc func btnPostTapped() {
    AppDelegate.shared.window?.endEditing(true)
}

---

我们的应用程序的基础是

窗口

，所以当您在窗口上执行任何事件时，它将影响整个应用程序。我希望这能解决您的问题。

从任何地方隐藏键盘

UIApplication.shared.sendAction(#selector(UIApplication.resignFirstResponder), to: nil, from: nil, for: nil)

或

从导航层次结构中获取所需的viewcontroller实例，并将其命名为：

requiredViewController.textField.resignFirstResponder()

或

requiredViewController.view.endEditing(true)