除非我先选择其他行，否则UIPickerView不会选择第一行？

Question

当我第一次加载它时，似乎无法在UIPickerView中选择第一行。加载选择器视图时，我希望文本字段立即更新。仅当我选择其他东西然后返回第一行时，它才会更新。

Private Sub CommandButton1_Click()

Dim Cell As Range, v1, v2

v1 = Array("2X4", "2X6", "2X6H"): v2 = Array(2, 2, 2)

With Sheets(2)
    For Each Cell In .Range("AZ2:AZ" & .Cells(.Rows.Count, "AZ").End(xlUp).Row)
        If Cell.Value = 1 Or Cell.Value = 2 Or Cell.Value = 3 Then
            .Rows(Cell.Row).Copy Destination:=Sheets(v1(Cell.Value - 1)).Range("A" & v2(Cell.Value - 1))
            v2(Cell.Value - 1) = v2(Cell.Value - 1) + 1
        End If
    Next Cell
End With

End Sub

Answer 1

改善您的代码。

platformSelected.delegate = self

......

// MARK: - UITextFieldDelegate
extension YourUIViewController: UITextFieldDelegate {

   func textFieldDidBeginEditing(_ textField: UITextField) {
      // TODO: - Specify index what you need. After editing it changed and you should get selected index using its position in platformData Array
      let index = 0
      picker.selectRow(index, inComponent: 0, animated: true)
   }

}