Android Question [B4X] Barcode Reader problem

cwt

Active Member
Licensed User
Longtime User
I am implementing this barcode reader in my Android app and have a problem with different devices.

The problem occurs in this sub of the barcode reader code:
B4X:
Private Sub CreateDetector (Codes As List)
    Dim ctxt As JavaObject
    ctxt.InitializeContext
    Dim builder As JavaObject
    builder.InitializeNewInstance("com/google/android/gms/vision/barcode/BarcodeDetector.Builder".Replace("/", "."), Array(ctxt))
    Dim barcodeClass As String = "com/google/android/gms/vision/barcode/Barcode".Replace("/", ".")
    Dim barcodeStatic As JavaObject
    barcodeStatic.InitializeStatic(barcodeClass)
    Dim format As Int
    For Each formatName As String In Codes
        format = Bit.Or(format, barcodeStatic.GetField(formatName))
    Next
    builder.RunMethod("setBarcodeFormats", Array(format))
    detector = builder.RunMethod("build", Null)
    Dim operational As Boolean = detector.RunMethod("isOperational", Null)
    If operational = False Then
        toast.Show("Failed to create detector")
    End If
    btnStartStop.Enabled = operational
End Sub
The code works fine on one of my test phones, a Samsung Galaxy S10 with Android 11.0 - but I get "Failed to create detector" on another test phone, Samsung Galaxy S4 with Android 5.01.

Is this an Android version problem or possibly something else? Any fix?
 

cwt

Active Member
Licensed User
Longtime User
What would I need to have in the manifest, if anything, for this to work?
 
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