Question

我正在制作一个iOS应用，其中我使用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中的视图按预期方式工作，但是在controller B中，如果我打开键盘并将其关闭，则AccossoryView将可见，并且应该不可见，有什么想法吗？

完整项目InpoutViewTest

Answer 1

遵循这种方法：

var shouldBecomeFirstResponder:Bool = false

override var canBecomeFirstResponder: Bool {
return shouldBecomeFirstResponder
}

也不要忘记在viewWillDisappear中将此标志设置为false

 shouldBecomeFirstResponder = false

Answer 2

我也遇到了这个问题。尝试将其放在您的viewWillDisappear(_ animated: Bool)函数中：

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

在过渡到controller B之前，应删除输入的附件视图。只要记得返回controller A时将输入的附件视图添加回去即可。如果愿意，您也可以尝试使用myInputAccessoryView.isHidden = true代替removeFromSuperview()。

InputAccessoryView未删除

2 个答案: