Android Question How to trap "carriage return" when I scan a barcode with a Zebra Handheld TC56.

KMatle

Expert

Licensed User

Longtime User

• May 29, 2020

• #2

Use the TextChanged event to capture any change and check the content. If it ends with CRLF (or similar), do your search. Here you can check any value (length, etc), too

 

Upvote 0

joaquinortiz

Active Member

Licensed User

Longtime User

• May 30, 2020

• #3

KMatle said:

Use the TextChanged event to capture any change and check the content. If it ends with CRLF (or similar), do your search. Here you can check any value (length, etc), too

Click to expand...

I have tested this suggestion with the following code.

B4X:

Sub txtSearch_TextChanged (Old As String, New As String)

    Dim MySize, i As Int
    Dim MyChar As String
    
    MySize = New.Length
    For i= 1 To MySize
        MyChar = myUtilerias.Mid(New,i,1)
        If MyChar = CRLF Then
            myUtilerias.myMsgBox(Activity,"Its Works!!....HERE I make t he search!","OK","","")
        End If
    Next

End Sub

I tested my app, with this code, with a Honeywell CK75 handheld and in a Zebra TC56 model and it doesn't works using TextChanged event and CRLF.

Any other idea?

Thanks in advance, for your time helping me!!.

 

Upvote 0

udg

Expert

Licensed User

Longtime User

• May 30, 2020

• #4

Are you aware that CRLF = Chr(10)? This is true for B4J, B4A and B4i.

 

Upvote 0

F

fatman

Active Member

Licensed User

Longtime User

• May 30, 2020

• #5

Hi,

I use several Zebra tc20 barcodescanners and i also use a textfield detecting and checking barcodes using
the edittext_enterpressed event.

 

Upvote 0

Peter Simpson

Expert

Licensed User

Longtime User

• May 30, 2020

• #6

You would actually be better of using broadcast receiver, there should be a setting in the app designed for the scanner. I develop on barcode scanners and I always use the broadcast receiver, just capture the intent it's easy enough to do, there's no need to capture carriage return.

 

Upvote 0

A

Alex_197

Well-Known Member

Licensed User

Longtime User

• May 30, 2020

• #7

Who printed barcodes? If it's you your text that will be converted into barcode should be like *12345*

 

Upvote 0

joaquinortiz

Active Member

Licensed User

Longtime User

• May 30, 2020

• #8

Thanks fellows!.

Let me dive into this suggestions!.

Greetings!! for your responses!.

 

Upvote 0

joaquinortiz

Active Member

Licensed User

Longtime User

• May 30, 2020

• #9

fatman said:

Hi,

I use several Zebra tc20 barcodescanners and i also use a textfield detecting and checking barcodes using
the edittext_enterpressed event.

Click to expand...

I don't want to be taken advantage of but, can you share some sample?

Thanks!.

 

Upvote 0

F

fatman

Active Member

Licensed User

Longtime User

• May 31, 2020

• #10

Hi,

I do it like that:

B4X:

Sub check_barcode
    Dim Code As String
    Code = EditText1.Text
    If Code.Length = 13 Then ' EAN13
        '
        ' Here you may check the code against a code in a databsse
        '
    End If
End Sub

Sub EditText1_EnterPressed
    check_barcode
End Sub

Hope this helps

 

Upvote 0