你如何增加带有 UITextView 的 inputAccessoryView 的高度？

如何解决你如何增加带有 UITextView 的 inputAccessoryView 的高度？

当它内部的 inputAccessoryView 高度增加时，我正在尝试增加我的 UITextView。

我偶然发现了这段代码：

class InputAccessoryView: UIView,UITextViewDelegate {

    let textView = UITextView()

    override init(frame: CGRect) {
        super.init(frame: frame)

        // This is required to make the view grow vertically
        self.autoresizingMask = UIView.AutoresizingMask.flexibleHeight

        // Setup textView as needed
        self.addSubview(self.textView)
        self.textView.translatesAutoresizingMaskIntoConstraints = false
        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "H:|[textView]|",options: [],metrics: nil,views: ["textView": self.textView]))
        self.addConstraints(NSLayoutConstraint.constraints(withVisualFormat: "V:|[textView]|",views: ["textView": self.textView]))

        self.textView.delegate = self

        // disabling textView scrolling prevents some undesired effects,// like incorrect contentOffset when adding new line,// and makes the textView behave similar to Apple's Messages app
        self.textView.isScrollEnabled = false
    }

    required init?(coder aDecoder: NSCoder) {
        fatalError("init(coder:) has not been implemented")
    }

    override var intrinsicContentSize: CGSize {
        // Calculate intrinsicContentSize that will fit all the text
        let textSize = self.textView.sizeThatFits(CGSize(width: self.textView.bounds.width,height: CGFloat.greatestFiniteMagnitude))
        return CGSize(width: self.bounds.width,height: textSize.height)
    }

    // MARK: UITextViewDelegate

    func textViewDidChange(_ textView: UITextView) {
        // Re-calculate intrinsicContentSize when text changes
        self.invalidateIntrinsicContentSize()
    }

}

但我不知道如何添加它。运行它，在第 36 行运行错误。如果它仍然有效，我们如何添加此代码（当前使用故事板。UITextView 和 UIView已连接到不同的文件）。