Android Question Error occurred on line: 119 (DBRequestManager) java.lang.RuntimeException: Error loading bitmap.

[aLya121314]

Hi everyone.

I am hoping that there is someone who can help me with this error i encounter.

I created 2 Listview in one layout. If I press button1, listview1.visible = true and the listview2.visible = false. And if I press button2, listview2.visible = true and listview1.visible = false. The data that is being display in the listview are from the database. In Listview1, I got no problem loading the data. but when it comes to listview2, I encounter this error:

Error occurred on line: 119 (DBRequestManager)
java.lang.RuntimeException: Error loading bitmap.
    at anywheresoftware.b4a.objects.drawable.CanvasWrapper$BitmapWrapper.Initialize2(CanvasWrapper.java:539)
    at b4a.example.dbrequestmanager._bytestoimage(dbrequestmanager.java:227)
    at b4a.example.homepage$ResumableSub_GetPrutas.resume(homepage.java:869)
    at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resumeAsUserSub(DebugResumableSub.java:48)
    at anywheresoftware.b4a.shell.Shell.runGoodChain(Shell.java:475)
    at anywheresoftware.b4a.shell.Shell.raiseEventImpl(Shell.java:293)
    at anywheresoftware.b4a.shell.Shell.raiseEvent(Shell.java:255)
    at java.lang.reflect.Method.invoke(Native Method)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:144)
    at anywheresoftware.b4a.BA.raiseEvent(BA.java:193)
    at anywheresoftware.b4a.shell.DebugResumableSub$DelegatableResumableSub.resume(DebugResumableSub.java:43)
    at anywheresoftware.b4a.BA.checkAndRunWaitForEvent(BA.java:267)
    at anywheresoftware.b4a.ShellBA.raiseEvent2(ShellBA.java:137)
    at anywheresoftware.b4a.BA$2.run(BA.java:387)
    at android.os.Handler.handleCallback(Handler.java:883)
    at android.os.Handler.dispatchMessage(Handler.java:100)
    at android.os.Looper.loop(Looper.java:264)
    at android.app.ActivityThread.main(ActivityThread.java:7581)
    at java.lang.reflect.Method.invoke(Native Method)
    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:980)

I send two sql request in each listview. to get the data in listview1 here is the code:

Sub GetGulay
    Dim req As DBRequestManager = CreateRequest
    Dim cmd As DBCommand = CreateCommand("getGulay", Null)
    Wait For (req.ExecuteQuery(cmd, 0, Null)) JobDone(j As HttpJob)
    ProgressDialogShow("Loading...")
    If j.Success Then
        req.HandleJobAsync(j, "req")
        Wait For (req) req_Result(res As DBResult)
        'work with result
'        req.PrintTable(res)
        Log(res.Columns)
        ListViewGulay.Clear
        For Each row() As Object In res.Rows
            Dim oBitMap As Bitmap
            Dim buffer() As Byte
            buffer = row(res.Columns.Get("image"))
            oBitMap = req.BytesToImage(buffer)
            ListView1.AddTwoLinesAndBitmap(row(0) , row(1) & " /kilo", oBitMap)
        Next
    Else
        Log("ERROR: " & j.ErrorMessage)
    End If
    ProgressDialogHide
    j.Release
End Sub

And for ListView2, here is the code:

Sub GetPrutas
    Dim req As DBRequestManager = CreateRequest
    Dim cmd As DBCommand = CreateCommand("getPrutas", Null)
    Wait For (req.ExecuteQuery(cmd, 0, Null)) JobDone(j As HttpJob)
    ProgressDialogShow("Loading...")
    If j.Success Then
        req.HandleJobAsync(j, "req")
        Wait For (req) req_Result(res As DBResult)
        'work with result
'        req.PrintTable(res)
        Log(res.Columns)
        ListViewPrutas.Clear       
        For Each row() As Object In res.Rows
'            Dim oBitMap As Bitmap
'            Dim buffer() As Byte
            Dim blob() As Byte
            Dim img As Bitmap
            blob = row(res.Columns.Get("image"))
            img = req.BytesToImage(blob)
            ListView2.AddTwoLinesAndBitmap(row(0), row(1) & " /kilo", img)
        Next
    Else
        Log("ERROR: " & j.ErrorMessage)
    End If
    ProgressDialogHide
    j.Release
End Sub

This code are located in one activity module.

Thank you.

 

[OliverA]

blob = row(res.Columns.Get("image"))

Maybe your are getting back a Null? Or a 0 length blob? Or a corrupted byte array?

 

[aLya121314]

Maybe your are getting back a Null? Or a 0 length blob? Or a corrupted byte array?

Hi OliverA,
How can I know that it was a corrupted byte array?



this is the code the error is pointing out. Specifically on bmp.Initialize2(In)

Public Sub BytesToImage(bytes() As Byte) As Bitmap
    Dim In As InputStream
    In.InitializeFromBytesArray(bytes, 0, bytes.Length)
    Dim bmp As Bitmap
    bmp.Initialize2(In)
    Return bmp
End Sub

 

[aLya121314]

I tried changing the images with a smaller file size and I didn't get any error. An it also displayed the images from the database. My question now is, how can I resize the images with larger file size? I tried using this code but it didn't work

Public Sub BytesToImage(bytes() As Byte) As Bitmap
    Dim In As InputStream
    In.InitializeFromBytesArray(bytes, 0, bytes.Length)
    Dim bmp As Bitmap = LoadBitmapResize(File.DirAssets, "image", 32dip, 32dip, True)
    bmp.Initialize2(In)
    Return bmp
End Sub