Bifurcation of Application Exception

Hello

I use RunTimeStore to store a reference to the instance of the application when the startup autorun entry.

When I try to open the application from the main screen (by clicking on the icon - another entry point), I get the back reference to the RunTimeStore. Then, I'm trying to push the home screen (home screen is an instance of the class). I get an unhandled exception: no application instance.

Please check the code below

class UiAppSample extends UiApplication {

    private HomeScreen iHomeScreen; //main screen instance
    public static final long ID = 0x60ac754bc0867248L; // RuntimeStore ID
    private static App_Sender_Listener iSenderListener; // SystemListner Instance

    //constructor
    UiAppSample() {
           //
    }

    public static void main(String[] args)
    {
        //check for entry point(during autorun or normal)

        if ((args.length > 0) && (args[0].equals("Startup")))
        {
            //regestering the app in the store with the ID
            RuntimeStore iRTS = RuntimeStore.getRuntimeStore();
            if (iRTS.get(ID) == null)
            {
                //
                iRTS.put(ID,new UiAppSample());
            }
            UiAppSample iDLApp = (UiAppSample)iRTS.get(ID);

            iSenderListener = new App_Sender_Listener();
            iDLApp.addSystemListener(iSenderListener);
            iSenderListener.registerUI(iDLApp);

            //entering even dispatcher
            iDLApp.enterEventDispatcher();
        }
        else
        {
            //getting the reference from the RuntimeStore during normal entry
            if (iRTS.get(ID) == null)
            {
                //
                iRTS.put(ID,new DriveLink());
            }

            UiAppSample iDLApp = (UiAppSample)iRTS.waitFor(ID);
            iDLApp.vScreenInit(); //for screen initialization
            iDLApp.vShowHome();   //to push mainscreen
        }        

    }   

    private void vScreenInit()
    {
        //
        iHomeScreen = new HomeScreen();
    }

    private void vShowHome()
    {
        //
        pushScreen(iHomeScreen);
        iDL_SenderListener.StartSendThread();
    }
}

The Exception occurs in the line 'iHomeScreen = new HomeScreen();' in the 'vScreenInit' function, which is called after obtaining a reference to the RunTimeStore.

HomeScreen is an inner class that extends screen. No error in the class. I have tested this app before the edition of start autorun. So I did not add this part of the code.

Please help me.

Hi Mark,

I removed the implementation of logic runtimestore.

I used the method ApplicationManager and postGlobalEvent to bring the background GUI in the foreground part.

I'm now able to start the GUI part successfully since the background thread.

For reference:

http://supportforums.BlackBerry.com/T5/Java-development/how-to-avoid-creating-two-instances-of-the-a...

Tags: BlackBerry Developers

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