Android Question Counting Decimals = Invalid Double

[GMan]

Hoi,
i want to count decimals (here money), but got always erros.
it should simply add the lblPreis.Text(LabelText= i.e. 3.20) to Bestellsumme (Double= i.e. 2.20)

Here is the code i am using:

Dim Bestellsumme as Double
lblPreis.Text= NumberFormat2(lblPreis.Text,0,2,2,False)
    Bestellsumme = NumberFormat2(Bestellsumme,0,2,2,False)
    Bestellsumme = Bestellsumme + lblPreis.Text
    lblSumme.Text = Bestellsumme
    lblSumme.Visible = True

The error message is:

java.lang.NumberFormatException: Invalid double:"3.20"

I tried around, but without knownledge its only try-and-error

 

[klaus]

This is wrong!

Bestellsumme = NumberFormat2(Bestellsumme,0,2,2,False)

NumberFormat2 returns a String not a Double.
You should calculate with numbers and use NumberFormat2 only for dispaly.

 

[LucaMs]

Bestellsumme = Bestellsumme + lblPreis.Text

private Preis as double = lblPreis.Text
Bestellsumme = Bestellsumme + Preis

 

[GMan]

I now changed to:

Private Preis As Double = lblPreis.Text
    Bestellsumme = Bestellsumme + Preis
  
    lblSumme.Text = Bestellsumme

    lblSumme.Visible = True

but the error is the same ?!

 

[GMan]

Got it - the Format of the Double is not guilty.
As i am using the comma-seperator, but the double uses the dot-seperator, i had to add simply the following:

    lblPreis.Text = lblPreis.Text.Replace(".", "").Replace(",", ".") = THIS was missing
    Private Preis As Double = lblPreis.Text
    Bestellsumme = Bestellsumme + Preis
   
    lblSumme.Text = Bestellsumme

    lblSumme.Visible = True