InputAccessoryView 未删除

Question

我正在制作一个 iOS 应用程序，我在其中使用 inputaccessoryview 到 UIViewController、

问题是

控制器 A

   class  ControllerA: UIViewController { 

    override var inputAccessoryView: UIView? {
        return saveView
    }

    override var canBecomeFirstResponder: Bool {
        return true
    }

    @IBAction func openVCB(_ sender: UIButton) {

    let controllerB = controllerB.instantiate(fromAppStoryboard: .main)
        let navigationController = UINavigationController(rootViewController: controllerB)
        navigationController.navigationBar.isTranslucent = false
        self.present(navigationController, animated: true)
    }
}

控制器 B

   class  ControllerB: UIViewController { 

    override var inputAccessoryView: UIView? {
        return nil
    }

    override var canBecomeFirstResponder: Bool {
        return false
    }

}

在 controller A 中，视图按预期工作，但在 controller B 中，如果我打开键盘并关闭它，AccossoryView 它将可见，但它应该不可见可见，有什么想法吗？

完整项目InpoutViewTest

Answer 1

我也运行遇到过这个问题。尝试将其放入 viewWillDisappear(_ animated: Bool) 函数中：

override func viewWillDisappear(_ animated: Bool) {
   if let myInputAccessoryView = saveView {
      myInputAccessoryView.removeFromSuperview()
   }
}

它应该在转换到 controller B 之前删除输入附件视图。只需记得在返回 controller A 时将输入附件视图添加回来。如果您愿意，也可以尝试 myInputAccessoryView.isHidden = true 而不是 removeFromSuperview()。

Answer 2

遵循这种方法：

var shouldBecomeFirstResponder:Bool = false

override var canBecomeFirstResponder: Bool {
return shouldBecomeFirstResponder
}

并且不要忘记在 viewWillDisappear 中也将此标志设置为 false

 shouldBecomeFirstResponder = false

InputAccessoryView 未删除

InputAccessoryView not removed

xcode

keyboard

inputaccessoryview

swift4.2