将UIView与XIB连接到另一个ViewController

Question

我有一个UIView，我将在哪里写按钮的动作。在XIB文件中，我喜欢使用这些按钮在键盘上方的条形图。如何将这些按钮连接到具有UITextView的ViewController以及单击按钮时应该在UITextView中完成操作（例如：当我单击＆＃34; Bold＆＃34;按钮时，UITextView中的选定文本应该是粗体） [！[在此处输入图像说明] [2]] [2]

import UIKit

protocol NoteViewDelegate {

    func didUpdateNoteWithTitle(newTitle : String, andBody newBody : String)
}

class NewNoteViewController: UIViewController , UITextViewDelegate {

    var delegate : NoteViewDelegate?


    @IBOutlet weak var textBody: UITextView!

    var strBodyText : String!

    override func viewDidLoad() {
        super.viewDidLoad()

        self.textBody.text = self.strBodyText

        self.textBody.becomeFirstResponder()

        self.textBody.delegate = self

        NotificationCenter.default.addObserver(self, selector: #selector(NewNoteViewController.updateTextView(notification:)) , name: Notification.Name.UIKeyboardWillChangeFrame, object: nil)
        NotificationCenter.default.addObserver(self, selector: #selector(NewNoteViewController.updateTextView(notification:)) , name: Notification.Name.UIKeyboardWillHide, object: nil)

        textBody.inputAccessoryView = Bundle.main.loadNibNamed("CustomAccessoryView", owner: self, options: nil)?.first as? UIView
}

    func updateTextView (notification:Notification) {
        let userInfo = notification.userInfo!

        let keyboardEndFrameScreenCoordinates = (userInfo[UIKeyboardFrameEndUserInfoKey] as! NSValue).cgRectValue
        let keyboardEndFrame = self.view.convert(keyboardEndFrameScreenCoordinates, to: view.window)

        if notification.name == Notification.Name.UIKeyboardWillHide {
            textBody.contentInset = UIEdgeInsets.zero

        }else{
            textBody.contentInset = UIEdgeInsets(top: 0, left: 0, bottom: keyboardEndFrame.height, right: 0)

            textBody.scrollIndicatorInsets = textBody.contentInset
    }
        textBody.scrollRangeToVisible(textBody.selectedRange)
}

Answer 1

  

如何将这些按钮连接到具有UITextView

的ViewController

视图控制器在加载栏时引用 .xib 文件中的栏。因此它引用了按钮。因此，它可以调用addTarget(_:action:for:)来配置按钮操作以调用视图控制器的方法，这反过来可以在文本视图中加粗文本。