问UIPickerView作为inputView为UITextView斯威夫特

EN

func textViewDidBeginEditing(_ textView: UITextView) {
    let inputView = UIView(frame: CGRect(x: 0,y: 0, width: self.view.frame.width, height: 240))
    let codePicker = UIPickerView(frame: CGRect(x: 0, y: 0, width: self.view.bounds.width, height: 240))
    codePicker.tag = 2

    if codePicker.dataSource == nil {
        codePicker.dataSource = self
    }
    if codePicker.delegate == nil {
        codePicker.delegate = self
    }

    codePicker.showsSelectionIndicator = true
    print("selectedBankRow: \(selectedRow)")
    codePicker.selectRow(selectedRow, inComponent: 0, animated: true)
    inputView.addSubview(codePicker)
    textView.inputView = inputView
    return
}