如何删除inputView swift下的灰色图层

Question

我试图让我的Inputview的背景透明但我只是把它变成灰色。

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)

如何保留输入视图的透明背景？

由于

Answer 1

使用inputView时，必须使用标准键盘的宽度。但是，您可以将空视图设置为inputView，并将自定义键盘设置为inputAccessoryView。这没有灰色背景。解决方案是：

self.fakeField.inputView = UIView() // Set an empty, zero-sized view as inputView, in order to remove the standard keyboard
self.fakeField.inputAccessoryView = InputViewCollection // Set your custom keyboard this way instead

Answer 2

尝试设置背景视图的alpha值 比如InputViewCollection?.alpha = 0.0

Answer 3

inputViewController 和 inputView 似乎具有这种灰色背景。但是，如果您使用 inputAccessoryViewController 或 inputAccessoryView，则背景清晰。