B4J Question TextField filter for float number

[peacemaker]

Hi, All

Is it really so that no any elegant solution for B4J textfield filters ? And we have to code each text filter individually.
For ex. to input a float number.
Any solution ?

 

[Magma]

Hi there.... is it specific range ?

 

[peacemaker]

specific range

No. OK, i have used Erel's old example for integers:

Private Sub txtShift_TextChanged (Old As String, New As String)
    Dim sb As StringBuilder
    sb.Initialize
    For i = 0 To New.Length - 1
        If "-.0123456789".IndexOf(New.CharAt(i)) > -1 Then
            sb.Append(New.CharAt(i))
        End If
    Next
    txtShift.Text = sb.ToString
    txtShift.SetSelection(txtShift.Text.Length, txtShift.Text.Length)
End Sub

And i have to check "-", "-.", ".-", ".", "-.-" stupid inputs at saving.

But strange that no an universal solution, or the filtering textview (or my search was bad).

 

[Magma]

I think if you use b4x dialog and InputTemplate.RegexPattern... will be easier... check XUI Views Example...

 

[behnam_tr]

check this :

jTextFormatter

In Javafx Version 8u40 a TextFormatter was introduced. This allows access to text input before any of the keypressed events are fired. Pasted text is also captured. This makes it a lot easier to validate and format text input. This wrapper is based on the example here...

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