splashscreen.java

《精通JAVA手机游戏与应用程序设计》随书光盘

/*
 * 创建日期 2004-12-15
 * 
 * TODO 要更改此生成的文件的模板，请转至 窗口 － 首选项 － Java － 代码样式 － 代码模板
 */
package splashScreen;

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.Displayable;
import javax.microedition.lcdui.Graphics;
import javax.microedition.lcdui.Image;

public class splashScreen extends Canvas {

	private Display display;

	private Displayable nextDisplay;

	private Timer timer = new Timer();

	private long displayTime = 3000;

	public splashScreen(Display dis, Displayable disp) {
		this.display = dis;
		this.nextDisplay = disp;
	}

	protected void paint(Graphics g) {
		int width = this.getWidth();
		int height = this.getHeight();
		g.drawString("这是欢迎界面",width/2,10,Graphics.TOP|Graphics.HCENTER);
		Image displayImage = null;
		try {
			displayImage = Image.createImage("/computer.png");
		} catch (IOException e) {
			e.printStackTrace();
		}
		g.drawImage(displayImage, width / 2, height / 2
				+ displayImage.getHeight() / 2, 
				Graphics.HCENTER|Graphics.BOTTOM);

	}

	public void setDisplayTime(long dispTime) {
		this.displayTime = dispTime;
	}

	protected void keyPressed(int keyCode) {
		disappear();
	}

	protected void pointerPressed(int y, int x) {
		disappear();
	}

	private void disappear() {
		timer.cancel();
		display.setCurrent(nextDisplay);
	}

	protected void showNotify() {
		timer.schedule(new TimerTask() {
			public void run() {
				disappear();
			}
		}, displayTime);
	}

}