Null Pointer Exception

[Nyptop]

I'm having problems with null pointer exceptions and getting confused. Could anyone help?

Thanks

 

[NJDude]

Is the path included in "settings.bmp"? it seems is not finding the pic.

 

[Nyptop]

What do you mean by path. Is it the way the file is saved?

 

[NJDude]

If you just say BMP and BMP = "somePic.png" it won't find it, unless you enter something like "File.DirDefaultExternal, BMP".

 

[Nyptop]

My code for chooser_result (chooser is content chooser) if:

 Sub chooser_Result (Success As Boolean, Dir As String, FileName As String)
    If Success Then
        bmp.Initialize(File.DirDefaultExternal, bmp)
    Else
        ToastMessageShow("No image selected", True)
    End If
End Sub

Is this what you mean?

 

[Nyptop]

I still haven't found a solution to this, could somebody help?

 

[thedesolatesoul]

I still haven't found a solution to this, could somebody help?

What error are you getting?
Where is 'bmp' declared?
Do you not need to call Chooser_Result before the bmp is actually initialised?

 

[Nyptop]

The bitmap is not setting itself as the background is my problem, not error and the photos are not being taken for some reason. The bitmap is declared in the module 'settings' in process globals. How should I initialise the bitmap and what should go in chooser_result?

 

[thedesolatesoul]

Sorry, I miss-phrased my question but I have the answer now: thanks for the help

In the sub chooser_result the code is as follows:

Sub chooser_Result (Success As Boolean, Dir As String, FileName As String)
    If Success Then
        bmp.Initialize(File.DirDefaultExternal, FileName)
    Else
        ToastMessageShow("No image selected", True)
    End If
End Sub

Then when I use 'bmp' the code is:

Sub Activity_Create(FirstTime As Boolean)

        
      
        PictureCounter = 0
              If settings.bmp.IsInitialized Then
            Camera1.Quality = settings.Q
      Activity.LoadLayout("StalkScreen")
      activity.SetBackgroundImage (settings.bmp)
      stalkscreen.SetBackgroundImage (settings.bmp)
      Camera1.Initialize(StalkScreen, "Camera1")
            
            Timer1.Initialize ("Timer1", settings.timerinterval) 
      Timer1.Enabled = True
      Else
      Msgbox ("Please select an image" ,"")
      StartActivity ("settings")
    End If
            
End Sub

The image is not loading to the background though. Could you point me in the correct direction as to what to do.

Thanks again,

Neil

The bitmap is not setting itself as the background is my problem, not error and the photos are not being taken for some reason. The bitmap is declared in the module 'settings' in process globals. How should I initialise the bitmap and what should go in chooser_result?

The bitmap is not setting to the background because:

If settings.bmp.IsInitialized Then

the bitmap is not initialised at Activity_Create

I suggest you initialise bmp from the Main activity to some default bitmap.

I am not sure however what you are trying to do in Activity_Create, it does look confusing.

 

[Nyptop]

Ok, thanks for the help, but the bitmap is still not loading Also I have set the title to be changed and be full screen at points but this is not what happens on any of the pages. If needed the file is attached,

cheers,

Neil

 

[jparkerri]

I'm getting the Null Exception Pointer error when I start up my app immediately after closing it. When I exit from an app, do I need to do a lot of cleanup like:
Activity.FInish, Remove Views, etc?
The normal sequence is:
I start the app successfully and it works fine.
I quit the app calling Activity.FInish.
I start it up again and get the Null Exception Pointer error.
Only after I click NO when it asks to Continue? can I then start it up again successfully.

When my app starts, it opens a Label in a view that is white. When it fails, the area does not go white as though the View is not initialized.

Any suggestions on what to check?

 

[DonManfred]

compile it in debug-mode and have a look at the unfiltered log... The must shown something where the exception happens... From this info you maybe know where the nullpointer (possibly not initialized object) appears..

Maybe the app is not really killed from androidsystem after your Activity.finish... It may killed when android want it to kill....

In that case your app is "paused"... And if you then "restart" the app it is not really started. It comes out of a pause. activity_create is possibly not called. Just activity_resume...
But this you can find out in debuglog too