iOS屏幕键盘出现时隐藏导航栏

Question

在我的应用程序中激活屏幕键盘时，隐藏iOS导航栏。我怎样才能防止这种情况发生？当用户在搜索栏中时以及用户点击它时，就会发生这种情况。

用户点击取消或搜索/完成编辑后，我设法在搜索页面上显示导航栏，但搜索栏会进入导航栏。

如果出现键盘，我没有＆＃34;隐藏栏＆＃34;在界面构建器上选择。

Answer 1

您也可以继续使用Xcode并取消选中：

隐藏栏 - ＆gt; “当键盘出现”并且可以罚款。

Answer 2

试试这个，

override func viewWillAppear(animated: Bool) {
    super.viewWillAppear(animated)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillShowNotification:", name: UIKeyboardWillShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: "keyboardWillHideNotification:", name: UIKeyboardWillHideNotification, object: nil)
}


override func viewWillDisappear(animated: Bool) {
    super.viewWillDisappear(animated)
    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillShowNotification, object: nil)
    NSNotificationCenter.defaultCenter().removeObserver(self, name: UIKeyboardWillHideNotification, object: nil)
}

 func keyboardWillShowNotification(notification: NSNotification) {
    self.navigationController?.navigationBarHidden = false
}

func keyboardWillHideNotification(notification: NSNotification) {
    self.navigationController?.navigationBarHidden = false
}

Answer 3

>  NSDictionary* info = [note userInfo];
>         CGSize kbSize = [[info objectForKey:UIKeyboardFrameBeginUserInfoKey] CGRectValue].size;
>         UIEdgeInsets contentInsets = UIEdgeInsetsMake(0.0, 0.0, kbSize.height+80, 0.0);
>         _scrollBackground.contentInset = contentInsets;
>         _scrollBackground.scrollIndicatorInsets = contentInsets;