小编Mat*_*oni的帖子

我试图使用的方法是:drawImage(image,int,int,int,int,ImageObserver)方法,以便我可以扩展我的图像,在我看到的所有示例中,ImageObserver应该是这个,但这不是似乎工作(即我见过的唯一方法是:drawImage(image,int,int,ImageObserver),不知道这是否有所不同).

这是我的主要类applet:

import java.applet.*;
import java.awt.*;

public class Main extends Applet implements Runnable{
    private Thread th;
    private Hitter hitter;

    //double buffering
    private Graphics dbg;
    private Image dbImage;

    public void init(){
        hitter = new Hitter(getImage(getCodeBase(), "Chitter.png"));
    }

    public void start(){
        th = new Thread(this);
        th.start();
    }

    public void stop(){
        th.stop();
    }

    public void update(Graphics g){
        if(dbImage == null){
            dbImage = createImage(this.getSize().width, this.getSize().width);
            dbg = dbImage.getGraphics();
        }

        dbg.setColor(getBackground());
        dbg.fillRect(0, 0, this.getSize().width, this.getSize().height);
        dbg.setColor(getForeground());
        paint(dbg);

        g.drawImage(dbImage, 0, 0, this);
    }

    public void paint(Graphics …