resmid.java

图书中的经典例子 好好看看 会有帮助的。java2me版本的

//ResMID.java file
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
import java.io.*;

public class ResMID extends MIDlet implements CommandListener
{

    private Command exitCommand;
    private HelloWorldCanvas myCanvas;
    public ResMID()
    {
        exitCommand =new Command("Exit",Command.EXIT,1);
        myCanvas =new HelloWorldCanvas(getAppProperty("Img1"),getAppProperty("Img2"),getAppProperty("Txt"));
        myCanvas.addCommand(exitCommand);
        myCanvas.setCommandListener(this);
    }
    protected void startApp(  ) throws MIDletStateChangeException
    {
        Display.getDisplay(this).setCurrent(myCanvas);
    }

    protected void pauseApp(  )
    {
    }

    protected void destroyApp( boolean p1 )
    {
    }

    public void commandAction(Command c,Displayable d)
    {
        if (c ==exitCommand)
        {
            destroyApp(false);
            notifyDestroyed();
        }
    }
    //internal class HelloWorldCanvas
    public class HelloWorldCanvas extends Canvas
    {
        private Image imgDemo1,imgDemo2;
        private String strDemo;
        public HelloWorldCanvas(String urlImg1,String urlImg2,String urlTxt) 
        {
            try
            {
                //通过资源文件读入图像文件
                imgDemo1 = Image.createImage(urlImg1);
                imgDemo2 = Image.createImage(urlImg2);
                //通过资源文件读入文本文件
                InputStream is = imgDemo1.getClass().getResourceAsStream(urlTxt);
                byte[] datain = new byte[is.available()];
                is.read(datain);
                is.close();
                strDemo = new String(datain);
            }
            catch(Exception e)
            {
                System.out.println("Load resource error");
            }
        }

        public void paint(Graphics g) 
        {
            g.setColor(0xffffff);//颜色设置为白色
            g.fillRect(0, 0, getWidth(), getHeight());
            g.drawImage(imgDemo2,0,0,Graphics.TOP|Graphics.LEFT);
            g.drawImage(imgDemo1,32,0,Graphics.TOP|Graphics.LEFT);
            g.setColor(0x000000);//颜色设置为黑色
            g.drawString(strDemo,0,100,Graphics.TOP|Graphics.LEFT);
        }
    }
}