Android Question how allow comma or doc (point) in number input B4XFloatTextField control.

netsistemas · Mar 26, 2021

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Handle the soft keyboard with the IME library

Android has very good support for custom input method editors (IMEs). The downside for this powerful feature is that interacting with the soft keyboard can be sometimes quite complicated. This library includes several utilities that will help you better handle the soft keyboard. The attached...

www.b4x.com

and i include this code:

B4X:

    Dim ime As IME
    ime.Initialize ( "IME")
    ime.SetCustomFilter(txtKilos,txtKilos.INPUT_TYPE_NUMBERS,"0123456789,.")

but
how to do this in b4x with a B4XFloatTextField control?

the final objet is allow to the user, input a decimal with comma or point in a keyboard (in spain and europe - no germany), i think the decimal is comma.

(after i replace comma with point whit this funcion

B4X:

public Sub Val(Txt As String) As Double
    If IsNumber(Txt & "") Then
        Return Txt
    Else
        Dim NewVal As String
        NewVal = Txt.Replace(",",".")
        If IsNumber(NewVal) Then
            Return NewVal
        Else
            Return 0
            
        End If
        
    End If
End Sub

)

Mahares · Mar 26, 2021

netsistemas said:
how to do this in b4x with a B4XFloatTextField control?

To set a custom filter for a B4XFloatTextFIeld:

B4X:

Dim et As EditText =B4XFloatTextField1.TextField
IME.SetCustomFilter(et,et.INPUT_TYPE_NUMBERS,"0123456789,.")

You can validate your entry to allow only one comma or only one period:

B4X:

Sub IsValid(entry As String) As Boolean  'allows only  digits, 1 comma or 1 period
    If entry.Length = 0 Then Return False
    Dim regexPattern As StringBuilder
    regexPattern.Initialize
    regexPattern.Append("\d+[.,]|\d+\d+")  'all digits but can have only 1 comma or 1 period
    Return Regex.IsMatch(regexPattern.ToString, entry)
End Sub

Sub B4XFloatTextField1_EnterPressed
    Dim str As String =B4XFloatTextField1.Text
    If Not (IsValid(str)) Then
        MsgboxAsync("not a valid entry", "Validate")
        B4XFloatTextField1.RequestFocusAndShowKeyboard
    End If
'    str=str.Replace(",",".")    'you can replace the comma with a period here if you want
'    Log("str: " & str)  
End Sub

netsistemas · Mar 30, 2021

SOLVED.
thanks.
whit

B4X:

TXTKILOS = B4XFloatTextField1.TextField

it was enought.

the rest of my code are ok.

Android Question how allow comma or doc (point) in number input B4XFloatTextField control.

netsistemas

Active Member

Handle the soft keyboard with the IME library

Mahares

Expert

netsistemas

Active Member

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Android Question how allow comma or doc (point) in number input B4XFloatTextField control.

netsistemas

Active Member

Handle the soft keyboard with the IME library

Mahares

Expert

netsistemas

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