为UITextViews使用的键盘添加第二个UIToolBar

时间:2017-03-07 21:41:38

标签: swift3 uitextview uitoolbar uikeyboard xcode8.2

我目前有一个正常工作UIToolbar,我在使用UITextField时在键盘上方放置了额外的按钮,但我想要在第二个UIToolbar类型之上UITextView。当我尝试复制我的代码并将其修改为我希望它看起来的样式时,它根本不会显示出来。我不确定我做错了什么,或者是否与我使用的NotificationCenteraddObserver有关。仅供参考,如果需要,整体课程称为AddRecipeDirectionVC: UIViewController, UITextViewDelegate

所以这是我添加到viewDidLoad

中的观察者代码
override func viewDidLoad() {
    super.viewDidLoad()

    //...Other Code...

    NotificationCenter.default.addObserver(self, selector: #selector(AddRecipeDirectionVC.keyboardWillShow(notification:)), name: NSNotification.Name.UIKeyboardWillShow, object: nil)
}

最初,我认为我必须在每个UIViewController上添加此观察者,但我开始认为我使用的此代码可以放在初始VC中,它会随身携带对于项目的其余部分(目前,我在VC中使用该代码,我添加了工具栏)

接下来,我有textViewDidBeginEditing功能,我认为正在添加键盘工具栏。

func textViewDidBeginEditing(_ textView: UITextView) {

    if (textView.textColor == UIColor.lightGray) {
        textView.text = nil
        textView.textColor = UIColor.black
    }
    self.keyboardToolbar(textView: textView) //Adding Keyboard
}

最后,我有keyboardWillShowkeyboardToolbar个功能

func keyboardWillShow(notification: Notification) {

    let keyFrame = ((notification as NSNotification).userInfo![UIKeyboardFrameBeginUserInfoKey] as! NSValue).cgRectValue
    let keyHeight = keyFrame.size.height

    self.bottomSpace.constant = keyHeight + 12
}

func keyboardToolbar(textView: UITextView) {

    let toolbar: UIToolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: 1, height: 1))
    toolbar.barStyle = UIBarStyle.default
    toolbar.bounds.size.height = 28

    let flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)

    let done: UIBarButtonItem = UIBarButtonItem(image:  #imageLiteral(resourceName: "Done Check"), style: UIBarButtonItemStyle.done, target: self, action: #selector(AddRecipeIngredientVC.doneButtonAction))
    done.tintColor = UIColor.aqua(alpha: 1.0)

    let clear: UIBarButtonItem = UIBarButtonItem(title: "Clear", style: UIBarButtonItemStyle.plain, target: self, action: #selector(AddRecipeDirectionVC.clearButtonAction))
    clear.tintColor = UIColor.darkAqua(alpha: 1)

    var items = [UIBarButtonItem]()

    items.append(clear)
    items.append(flexSpace)
    items.append(done)

    toolbar.items = items
    toolbar.sizeToFit()

    textView.inputAccessoryView = toolbar    }

func doneButtonAction() {

    self.directionText.resignFirstResponder()
    self.bottomSpace.constant = 12
}

func clearButtonAction() {

    directionText.text = ""
}

据我所知,我做的一切与其他VC一样,所以看起来它应该有效,但什么都没有显示出来。如果需要添加任何其他代码,请与我们联系。

感谢您提前获得任何人可以给予我的帮助:)

2 个答案:

答案 0 :(得分:0)

经过大量谷歌搜索,我发现keyboardToolbar代码必须放在textViewShouldBeginEditing而不是textViewDidBeginEditing。根据我的理解,使用UITextView布局已经设置到textViewDidBeginEditing,因此我没有看到它。这是我最终使用的代码完成了这项工作。除了下面显示的内容外,其他所有内容都是相同的。

func textViewShouldBeginEditing(_ textView: UITextView) -> Bool {

    self.keyboardToolbar(textView: textView)
    return true
}

func textViewDidBeginEditing(_ textView: UITextView) {

    if (textView.textColor == UIColor.lightGray) {
        textView.text = nil
        textView.textColor = UIColor.black
    }
}

答案 1 :(得分:0)

试试这段代码

func keyboardToolbar(textView: UITextView) {

    let toolbar: UIToolbar = UIToolbar(frame: CGRect(x: 0, y: 0, width: 1, height: 1))
    toolbar.barStyle = UIBarStyle.default
    toolbar.bounds.size.height = 28

    let flexSpace = UIBarButtonItem(barButtonSystemItem: UIBarButtonSystemItem.flexibleSpace, target: nil, action: nil)


    let done: UIBarButtonItem = UIBarButtonItem(title: "done", style: UIBarButtonItemStyle.done, target: self, action: #selector(self.doneButtonActionn))
    done.tintColor = UIColor.red

    let clear: UIBarButtonItem = UIBarButtonItem(title: "Clear", style: UIBarButtonItemStyle.plain, target: self, action: #selector(self.doneButtonAction))
    clear.tintColor = UIColor.black


    var items = [UIBarButtonItem]()

    items.append(clear)
    items.append(flexSpace)

    items.append(done)

    toolbar.items = items
    toolbar.sizeToFit()

    textView.inputAccessoryView = toolbar


}


func doneButtonAction() {

    self.bodyTextView.resignFirstResponder()
    //self.bottomSpace.constant = 12
}

func doneButtonActionn() {

    self.bodyTextView.resignFirstResponder()
    //self.bottomSpace.constant = 12
}

func textViewShouldBeginEditing(_ textView: UITextView) -> Bool {

    self.keyboardToolbar(textView: textView)
    return true
}