Java Development

[jlfrias]

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 width screen for 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 don't have idea about this, please help me.

Thanks.

 

[mantaker]

Display.getWidth() will get you the screen width!

Thanks! 

[jlfrias]

Thanks, but How can insert this function "Display.getWidth()" in my code? I have tested, but, I can't integrated.

[BBDeveloper]

The place you where need Screen width call that method.

[jlfrias]

Sorry, I don't undertand. Would you explain again?

Thanks

[mantaker]

In your code, instead of widthScreenDevice(), add Display.getWidth()

Thanks! 

[Rajat_10Sep · Accepted solution]

Hi,

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

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

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