小编cor*_*aft的帖子

我试图让我的 Inputview 的背景透明，但我只把它变成灰色。

代码是：

    let fakeField : UITextField = UITextField(frame: CGRect.zero)
    //1
    InputViewCollection = InputView(frame: CGRect(x: 0, y: 0, width: 0, height: 216)) //Intialize custom input view
    InputViewCollection?.delegate = self //delegate
    InputViewCollection?.dataSource = self //datasource

    //2
    InputViewCollection?.backgroundColor = UIColor.clear
    self.fakeField.inputView = InputViewCollection //Assign input view
    self.fakeField.keyboardAppearance = .default
    self.view.addSubview(self.fakeField)

如何离开输入视图的透明背景？

谢谢