welcomescreenmidlet.java.svn-base

example2 众多JAVA实例源码...学习java基础的好帮手

package opusmicro.demos.canvas;

import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;

import javax.microedition.lcdui.Canvas;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;
import javax.microedition.lcdui.TextBox;
import javax.microedition.lcdui.TextField;
import javax.microedition.midlet.MIDlet;
import javax.microedition.midlet.MIDletStateChangeException;

public class WelcomeScreenMIDlet extends MIDlet {
	public WelcomeScreenMIDlet() {}
	protected void destroyApp(boolean arg0) throws MIDletStateChangeException {}
	protected void pauseApp() {}
	protected void startApp() throws MIDletStateChangeException {
		Display display = Display.getDisplay(this);
		new SplashScreen(display);
	}
}

class SplashScreen extends Canvas {
	private Display display;
	private TextBox next;
	private Timer timer;
	private final int MAX_TIME = 3000;
	private Image image;
	private String file = "/welcome.png";
	public SplashScreen(Display display) {
		super();
		this.display = display;
		timer = new Timer();
		loadImage();
		display.setCurrent(this);
		timer.schedule(new TimerTask() {
			public void run() {
				dismiss();
			}
		}, MAX_TIME);
	}

	public void dismiss() {
		timer.cancel();
		next = new TextBox("welcome", "Welcome to come here!", 40, TextField.ANY);
		display.setCurrent(next);
	}

	protected void paint(Graphics g) {
		g.drawImage(image, 0, 0, Graphics.LEFT | Graphics.TOP);
	}

	protected void keyPressed(int key) {
		dismiss();
	}

	private void loadImage() {
		try {
			image = Image.createImage(file);
		}catch (IOException e) {
			e.printStackTrace();
		}
	}
}