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- - BB screen navigation issues - <FULL MENU> <HOLD> (http://www.blackberryforums.com/showthread.php?t=191050)

BB screen navigation issues - <FULL MENU> <HOLD>

I am trying to build a simple menu using ButtonFields. I am able to navigate from screen to screen.

Testing on the emulator, if I use the "Enter Button" or Enter key on my beyboard, I can navigate from Screen A to Screen B. However if I use the Pearl trackball, I get I get <Full Menu> and then <Close> menu options.

What technique can I use to skip these menu options in an application. I also tried variations of super(DEFAULT_MENU | DEFAULT_CLOSE), with no success.

Please respond gently, as I am still quite new with this.

thank you

PHP Code:


		
			
import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;



class MenuMain extends UiApplication

{

   public static void main(Stringxxx91;xxx93; args)    

   {  

        MenuMain theApp = new MenuMain();

        theApp.enterEventDispatcher();       

   } 

   public MenuMain()   

   {

       pushScreen(new MenuButtonScreenA());   

   }   

}



import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.LabelField;

import net.rim.device.api.ui.container.MainScreen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.*;

import net.rim.device.api.ui.component.*;



public class MenuButtonScreenA extends MainScreen implements FieldChangeListener

{

    private ButtonField b1,b2;

    public MenuButtonScreenA()

    {

        super(DEFAULT_MENU);

        LabelField title = new LabelField("Menu Button Test Screen -A-" ,LabelField.ELLIPSIS |  LabelField.USE_ALL_WIDTH); 

        setTitle(title);           

         

        b1 = new ButtonField("Go To Screen B");    

        b2 = new ButtonField("Go To Screen C");       

        this.add(b1);

        this.add(b2);

        b1.setChangeListener(this);

        b2.setChangeListener(this);

    }

   

    public void fieldChanged(Field field, int context)

    {

         if(field instanceof ButtonField)

         {        

             String lbl = ((ButtonField)field).getLabel();

        

             if(lbl.equals("Go To Screen B"))

             {   

                 MenuButtonScreenB sc = new MenuButtonScreenB();

                 UiApplication.getUiApplication().pushScreen(sc);

             }

             

             if(lbl.equals("Go To Screen C"))

             {

                 Dialog.alert("This will soon take you to Screen C");

                 //MenuButtonScreenC sc = new MenuButtonScreenC();

                 //UiApplication.getUiApplication().pushScreen(sc);

             }

        }   

    }



  //override the onClose() method to display a dialog box to the user with "Goodbye!" when the application is closed

   public boolean onClose()

   {

       Dialog.alert("Goodbye!");

       System.exit(0);

       return true;

   }

}



 import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.LabelField;

import net.rim.device.api.ui.container.MainScreen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.*;

import net.rim.device.api.ui.component.*;



public class MenuButtonScreenB extends MainScreen implements FieldChangeListener

{

    private ButtonField b1,b2;



    public MenuButtonScreenB()

    {

        super(DEFAULT_MENU);

        LabelField title = new LabelField("Menu Button Test Screen -B-" ,LabelField.ELLIPSIS |  LabelField.USE_ALL_WIDTH); 

        setTitle(title);           

         

        b1 = new ButtonField("Go To Screen B-1");    

        b2 = new ButtonField("Go To Screen B-2");       

        this.add(b1);

        this.add(b2);

        b1.setChangeListener(this);

        b2.setChangeListener(this);         

    }

    

    public void fieldChanged(Field field, int context)

    {

         if(field instanceof ButtonField)

         {        

             String lbl = ((ButtonField)field).getLabel();

        

             if(lbl.equals("Go To Screen B-1"))

             {            

                 Dialog.alert("This will soon take you to Screen B-1");

                 //MenButtonScreenB sc = new MenButtonScreenB();

                 //UiApplication.getUiApplication().pushScreen(sc);

             }

             

             if(lbl.equals("Go To Screen B-2"))

             {

                 Dialog.alert("This will soon take you to Screen B-2");

                 //MenButtonScreenC sc = new MenButtonScreenC();

                 //UiApplication.getUiApplication().pushScreen(sc);

             }

        }   

    }    

    

    public boolean onClose()

    {  

       setDirty(false);

       return super.onClose();

   }    

}

I was able to solve this by using a FieldChangeListener like this. But it seems like a cludgy solution. Any better ideas?

Quote:

b1 = new ButtonField("Goto Screen B",ButtonField.CONSUME_CLICK);
b1.setChangeListener(new FieldChangeListener()
{
public void fieldChanged(Field field, int context)
{
MenuButtonScreenB sc = new MenuButtonScreenB();
UiApplication.getUiApplication().pushScreen(sc);
}
});
this.add(b1);

PHP Code:


		
			
import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;



class MenuMain extends UiApplication

{

   public static void main(Stringxxx91;xxx93; args)    

   {  

        MenuMain theApp = new MenuMain();

        theApp.enterEventDispatcher();       

   } 

   public MenuMain()   

   {

       pushScreen(new MenuButtonScreenA());   

   }   

}



import net.rim.device.api.ui.*;

import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.LabelField;

import net.rim.device.api.ui.container.MainScreen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.*;



public class MenuButtonScreenA extends MainScreen 

{

    private ButtonField b1,b2;

    private ButtonField buttonSel;

    

    public MenuButtonScreenA()

    {

        super(DEFAULT_MENU);

        LabelField title = new LabelField("Menu Button Test Screen -A-" ,LabelField.ELLIPSIS |  LabelField.USE_ALL_WIDTH); 

        setTitle(title);           

        

        //--------------

        b1 = new ButtonField("Goto Screen B",ButtonField.CONSUME_CLICK);

        b1.setChangeListener(new FieldChangeListener()

        {

            public void fieldChanged(Field field, int context)

            {

                MenuButtonScreenB sc = new MenuButtonScreenB();

                UiApplication.getUiApplication().pushScreen(sc);

            }

        });

        this.add(b1);

        //--------------        

        b2 = new ButtonField("Goto Screen C",ButtonField.CONSUME_CLICK);

        b2.setChangeListener(new FieldChangeListener()

        {

            public void fieldChanged(Field field, int context)

            {

                MenuButtonScreenC sc = new MenuButtonScreenC();

                UiApplication.getUiApplication().pushScreen(sc);

            }

        });

        this.add(b2);

        //--------------

        

    }

    



  //override the onClose() method to display a dialog box to the user with "Goodbye!" when the application is closed

   public boolean onClose()

   {       

       boolean retval = false;

       int response = Dialog.ask(Dialog.D_YES_NO, "Are you sure you want to Exit now?", Dialog.NO);     

       if(response==Dialog.YES)

       {                

           System.exit(0);

           retval = true;       

       }       

       return retval;

   }   

}



import net.rim.device.api.ui.*;

import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.LabelField;

import net.rim.device.api.ui.container.MainScreen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.*;





public class MenuButtonScreenB extends MainScreen 

{

    private ButtonField b1,b2;



    public MenuButtonScreenB()

    {

        super(DEFAULT_MENU);

        LabelField title = new LabelField("Menu Button Test Screen -B1-" ,LabelField.ELLIPSIS |  LabelField.USE_ALL_WIDTH); 

        setTitle(title);           

         

        //--------------

        b1 = new ButtonField("Goto Screen B-1",ButtonField.CONSUME_CLICK);

        b1.setChangeListener(new FieldChangeListener()

        {

            public void fieldChanged(Field field, int context)

            {

                Dialog.alert("This will soon take you to Screen B-1");

            }

        });

        this.add(b1);

    }

    

    public boolean onClose()

    {  

       setDirty(false);

       return super.onClose();

   }       

}



import net.rim.device.api.ui.*;

import net.rim.device.api.ui.Screen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.component.LabelField;

import net.rim.device.api.ui.container.MainScreen;

import net.rim.device.api.ui.UiApplication;

import net.rim.device.api.ui.*;

import net.rim.device.api.ui.component.*;



public class MenuButtonScreenC extends MainScreen

{

    private ButtonField b1,b2;



    public MenuButtonScreenC()

    {

        super(DEFAULT_MENU);                                

        LabelField title = new LabelField("Menu Button Test Screen -C1-" ,LabelField.ELLIPSIS |  LabelField.USE_ALL_WIDTH); 

        setTitle(title);           

         

        //--------------

        b1 = new ButtonField("Goto Screen C-1",ButtonField.CONSUME_CLICK);

        b1.setChangeListener(new FieldChangeListener()

        {

            public void fieldChanged(Field field, int context)

            {

                Dialog.alert("This will soon take you to Screen C-1");

            }

        });

        this.add(b1);

    }

    

    public boolean onClose()

    {  

       setDirty(false);

       return super.onClose();

   }       

}

You could have added the CONSUME_CLICK style to your button field - this would keep the menu from poppin up.