ios - 如何在 iOS 中的键盘布局顶部添加预览文本

Question

我想在键盘顶部显示预览文本，如下所示:

如何解决这个问题？

Answer 1

我想这就是你想要的:

代码:

override func viewDidAppear(_ animated: Bool) {
        let viewAcc = UIView()
        viewAcc.frame = CGRect(x: 0, y: 0, width: self.view.frame.size.width, height: 50)
        viewAcc.backgroundColor = UIColor.gray

        let newTF = UITextField(frame: CGRect(x: 2, y: 10, width: self.view.frame.size.width - 75 , height: 30))
        newTF.backgroundColor = UIColor.white
        newTF.borderStyle = UITextBorderStyle.none

        let btnDone = UIButton(frame: CGRect(x: newTF.frame.size.width + 10, y: 5, width: 45, height: 30 ))
        btnDone.backgroundColor = UIColor.blue
        btnDone.setTitle("Done", for: .normal)

        viewAcc.addSubview(newTF)
        viewAcc.addSubview(btnDone)
        self.mytextField.inputAccessoryView = viewAcc
    }

引用:

Apple Doc Reference