Android Question RDC Error when polling

[Alexander Stolte]

Hello,

I have wrote a little test app, by clicking a button he asks the database, with a JRDC2 client. The result should be in a label. Here the code:

Sub btn_select_Click
    Dim cmd As DBCommand
    cmd.Initialize
    cmd.Name = "select_too"
    reqManager.ExecuteQuery(cmd, 0, Null) 'NULL
End Sub

Sub JobDone(Job As HttpJob)
    If Job.Success = False Then
        Log("Error: " & Job.ErrorMessage)
    Else
        If Job.JobName = "DBRequest" Then
            reqManager.HandleJobAsync(Job, "ReqManager")
        End If
    End If
    Job.Release
End Sub

Sub ReqManager_Result(result As DBResult)
    reqManager.PrintTable(result)

    Dim row() As String = result.Rows.Get(0)
    lbl_text.Text = row(0) & row(1)
End Sub

and this is the error:

Logger connected to:  samsung SM-G935F
--------- beginning of crash
--------- beginning of main
** Service (starter) Create **
** Service (starter) Start **
** Activity (main) Create, isFirst = true **
** Activity (main) Resume **
** Service (httputils2service) Create **
** Service (httputils2service) Start **
Class not found: b4j.example.main$_dbresult, trying: com.database.main$_dbresult
Tag: null, Columns: 2, Rows: 1
column_1    column_2    
Alexander    Stolte   
Error occurred on line: 75 (Main)
java.lang.ClassCastException: java.lang.Object[] cannot be cast to java.lang.String[]
    at com.database.main._reqmanager_result(main.java:506)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.shell.Shell.runMethod(Shell.java:710)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:339)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:249)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:134)
    at anywheresoftware.b4a.BA$2.run(BA.java:338)
    at android.os.Handler.handleCallback(Handler.java:751)
    at android.os.Handler.dispatchMessage(Handler.java:95)
    at android.os.Looper.loop(Looper.java:154)
    at android.app.ActivityThread.main(ActivityThread.java:6688)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1468)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1358)

line 75 is this line:

    Dim row() As String = result.Rows.Get(0)

Now comes the funny, there are individual cases because the code works.

what am I doing wrong? Or can you solve it differently?

Thanks for answers.
Greetings!

 

[EnriqueGonzalez]

Ey Alex!

change this line:

Dim row() As String = result.Rows.Get(0)
'for this one: 
Dim row() As Object= result.Rows.Get(0)

The problem is that even when they are simple strings, java recognizes them as objects.
Hope it works.

 

[Alexander Stolte]

Sometimes it is easy, I could have on it Thanks, and now it is so fast