Lakban.java

package com.durianapp.kertasdanlakban;
import net.rim.device.api.ui.UiApplication;


public class Lakban extends UiApplication {
	public Lakban() {
		pushScreen(new LakbanScreen());
	}
	
	public static void main(String[] args) {
		new Lakban().enterEventDispatcher();
	}
}

LakbanScreen.java

package com.durianapp.kertasdanlakban;

import net.rim.device.api.system.Bitmap;
import net.rim.device.api.ui.Field;
import net.rim.device.api.ui.Graphics;
import net.rim.device.api.ui.XYEdges;
import net.rim.device.api.ui.component.TextField;
import net.rim.device.api.ui.container.MainScreen;
import net.rim.device.api.ui.container.VerticalFieldManager;
import net.rim.device.api.ui.decor.Background;
import net.rim.device.api.ui.decor.BackgroundFactory;
import net.rim.device.api.ui.decor.Border;
import net.rim.device.api.ui.decor.BorderFactory;

/**
 * This is just a simple example of how to make a good user experince using 
 * native Java for Blackberry devices. In this snippet, I use a wooden background 
 * image, a small tape image and a piece of paper image to make an application
 * feels like we put notes on a piece of paper, then we attached them to a table
 * using small tape.
 * @author amri.shodiq
 *
 */
public class LakbanScreen extends MainScreen {
	
	public LakbanScreen() {
		super(NO_VERTICAL_SCROLL);
		
		add(getMain());
		
		getMain().add(createQuoteField("Janganlah memboroskan hidup untuk " +
				"membuktikan bahwa komentar miring orang lain itu salah."));
		
		getMain().add(createQuoteField("Letakkan sandal Anda di bawah tanda berikut."));
	}
	
	/**
	 * Create a main container for all fields on top of this screen.
	 */
	private VerticalFieldManager mainManager;
	private VerticalFieldManager getMain() {
		if (mainManager == null) {
			mainManager = new VerticalFieldManager(VERTICAL_SCROLL | USE_ALL_WIDTH | 
					USE_ALL_HEIGHT);
			mainManager.setBackground(getScreenBackground());
		}
		return mainManager;
	}
	
	/**
	 * Make a background with wooden texture
	 */
	private Background screenBg;
	private Background getScreenBackground() {
		if (screenBg == null) {
			screenBg = BackgroundFactory.createBitmapBackground(
					Bitmap.getBitmapResource("img/app-bg.jpg"));
		}
		return screenBg;
	}
	
	/**
	 * Note a quote on a piece of paper with a tape on top of it.
	 * @param quote
	 * @return
	 */
	private Field createQuoteField(String quote) {
		VerticalFieldManager v2 = new VerticalFieldManager() {
			public void paint(Graphics g) {
				super.paint(g);
				// this is where we put the tape
				g.drawBitmap(
					(getWidth() - getTape().getWidth())/2, 
					4, getTape().getWidth(), getTape().getHeight(), getTape(), 
					0, 0);
			}
		};
		
		VerticalFieldManager v = new VerticalFieldManager(VerticalFieldManager.USE_ALL_WIDTH);
		v.setBorder(getQuoteBorder());
		// make a small margin to make the paper looks smaller than the table
		v.setMargin(8, 8, 8, 8);
		// make a small padding to make a little distance between the letter and 
		// paper side.
		v.setPadding(8, 8, 8, 8);
		
		// We use TextField to make this screen scrollable on a non touch device
		TextField text = new TextField(TextField.NO_EDIT_MODE_INPUT|TextField.READONLY) {
			// override this method to hide blue pointer
			public void drawFocus(Graphics g, boolean on) {
			}
		};
		text.setText(quote);
		v.add(text);
		
		v2.add(v);
		
		return v2;
	}
	
	/**
	 * Simply a bitmap instance of an image of tape.
	 */
	private Bitmap tape;
	private Bitmap getTape() {
		if (tape == null) {
			tape = Bitmap.getBitmapResource("img/tape.png");
		}
		return tape;
	}
	
	/**
	 * Border which represent a used paper.
	 */
	private Border quoteBorder;
	private Border getQuoteBorder() {
		if (quoteBorder == null) {
			quoteBorder = BorderFactory.createBitmapBorder(
					new XYEdges(26, 16, 12, 16),
					Bitmap.getBitmapResource("img/note.png"));
		}
		return quoteBorder;
	}
}