Android Question B4X Error with Barcode Reader example

[Bossolo]

Hello everyone, i'm trying to use the barcode reader attached in this example
When i run it, in multiple device, it crash in thhe following line, while creating the detector

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

Error occurred on line: 122 (B4XMainPage)
java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.keywords.Common.CallSubDebug2(Common.java:1058)
    at b4a.example.b4xpagesmanager._createpageifneeded(b4xpagesmanager.java:1069)
    at b4a.example.b4xpagesmanager._showpage(b4xpagesmanager.java:426)
    at b4a.example.b4xpagesmanager._addpage(b4xpagesmanager.java:246)
    at b4a.example.b4xpagesmanager._addpageandcreate(b4xpagesmanager.java:260)
    at b4a.example.b4xpagesmanager._initialize(b4xpagesmanager.java:166)
    at b4a.example.main._activity_create(main.java:417)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:732)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:351)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:146)
    at b4a.example.main.afterFirstLayout(main.java:105)
    at b4a.example.main.access$000(main.java:17)
    at b4a.example.main$WaitForLayout.run(main.java:83)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:237)
    at android.app.ActivityThread.main(ActivityThread.java:8167)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:496)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1100)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:336)
    at anywheresoftware.b4a.debug.Debug.CallSubNew2(Debug.java:285)
    ... 24 more
Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.debug.Debug.CallSub4(Debug.java:318)
    ... 25 more
Caused by: java.lang.reflect.InvocationTargetException
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4j.object.JavaObject.RunMethod(JavaObject.java:132)
    at b4a.example.b4xmainpage._createdetector(b4xmainpage.java:164)
    at b4a.example.b4xmainpage._b4xpage_created(b4xmainpage.java:75)
    ... 27 more
Caused by: com.google.android.gms.common.GooglePlayServicesMissingManifestValueException: A required meta-data tag in your app's AndroidManifest.xml does not exist.  You must have the following declaration within the <application> element:     <meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />

 

[Bossolo]

##SOLVED##

during other test i found the problem: in the manifest is missing a line, the full manifest have to be

AddApplicationText(<meta-data
    android:name="com.google.android.gms.vision.DEPENDENCIES"
    android:value="barcode,,face" />
<meta-data android:name="com.google.android.gms.version" android:value="@integer/google_play_services_version" />
)

I leave this reply in case someone else has the same problem