Retrieves the width of screen

Hi team,

I have a following code:

import net.rim.device.api.ui.*;
import net.rim.device.api.ui.component.*;
import net.rim.device.api.ui.container.*;
import net.rim.device.api.i18n.*;
import net.rim.device.api.system.*;
import net.rim.device.api.collection.util.*;
import net.rim.device.api.ui.decor.*;

import java.util.*;

public final class SeedAboutScreen extends MainScreen implements SeedManagerResource
{
    //members ------------------------------------------------------------------

    private static ResourceBundle _resources = ResourceBundle.getBundle(BUNDLE_ID, BUNDLE_NAME);
    private static SeedHelpScreen _seedHelpScreen;

    private VerticalFieldManager _manager;

    public SeedAboutScreen()
    {
        super();

        _manager = (VerticalFieldManager)getMainManager();

        BitmapField image_top = new BitmapField(Bitmap.getBitmapResource(_resources.getString(IMAGE_TOP)), FIELD_HCENTER | FOCUSABLE);        

        Background image_background = BackgroundFactory.createBitmapBackground(Bitmap.getBitmapResource(_resources.getString(IMAGE_BACKGROUND)), 0, 0, Background.REPEAT_INHERIT);

        BitmapField image_logo = new BitmapField(Bitmap.getBitmapResource(_resources.getString(IMAGE_LOGO)), FIELD_HCENTER | FOCUSABLE);

        _manager.setBackground(image_background);  

        Font font_title = this.getFont().derive(Font.PLAIN | Font.BOLD);
        Font font_application = this.getFont().derive(Font.PLAIN, 16);
        Font font_bold = this.getFont().derive(Font.PLAIN | Font.BOLD, 16);

        LabelField _titleField = new LabelField(_resources.getString(APPLICATION_TITLE), FOCUSABLE);
        LabelField _descriptionField = new LabelField(_resources.getString(APPLICATION_DESCRIPTION), FOCUSABLE);
        LabelField _versionField = new LabelField("Version: " + _resources.getString(APPLICATION_VERSION), 0, -1, Field.FIELD_RIGHT | FOCUSABLE);

        _titleField.setFont(font_title);
        _descriptionField.setFont(font_bold);
        _versionField.setFont(font_bold); 

        try {

            _manager.add(image_top);
            _manager.add(_titleField);
            _manager.add(new LabelField(" "));
            _manager.add(_descriptionField);
            _manager.add(new SeparatorField());
            _manager.add(_versionField);
            _manager.add(new LabelField(" "));

               }
        catch (IllegalArgumentException e)
            {
           System.out.println(e.getMessage());
            }
    }

    public boolean onClose()
    {
        _seedHelpScreen = new SeedHelpScreen();
        UiApplication.getUiApplication().pushScreen(_seedHelpScreen);
        return true;
    }

    public boolean keyChar(char key, int status, int time) {
        //intercept the ESC key - back out of this screen on its receipt
        boolean retval = false;

        switch (key) {
        case Characters.ESCAPE:
            onClose();
            retval = true;
            break;
        }

        return retval;
    }     

    private MenuItem _closeItem = new MenuItem(null, 0 , 200000, 10) {
        public void run() {
            onClose();
        }
        public String toString()
        {
            return "Close";
        }
    };

    protected void makeMenu ( Menu menu, int instance )
    {
        menu.add(_closeItem);
    }

}

I need get the screen width to create the following option:


        Switch (widthScreenDevice())

         case 480:                BitmapField image_top = new BitmapField("image 1.png");           case 320:            BitmapField image_top = new BitmapField("image 2.png");  ...

I have no idea about this, please help me.

Thank you.

Hello

Take 2 static public variables called deviceWidth and deviceHeight and initialize these variables with

deviceWidth = Display.getWidth () deviceHeight = Display.getHeight () and

Initialize these variables in the constructor of the class that contains the main() and then use these variables in your application.

Tags: BlackBerry Developers

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