JAVA Frame 窗体背景图片，首位相接滚动代码实例

背景图片连续滚动，程序已经跑过。前提！背景图片宽度比窗体长些，代码如下：

import java.awt.graphics;
import java.awt.image;
import javax.swing.imageicon;
import mine.game.util.propertiesutil;
@suppresswarnings("serial")
public class gameframe extends myframe{
private image img=imageutil.imageload("image/bk.jpg");
double movs,speed=1,headmovs;
double pwidth,pheight,bgwidth;
@override
public void paint(graphics g) {
//g.drawimage(img, 0, 0, null);
//===================================================
pwidth=propertiesutil.getvalue("width", "game.properties");
pheight=propertiesutil.getvalue("height", "game.properties");
bgwidth=new imageicon(img).geticonwidth();
//movs+=speed;
if(bgwidth>pwidth+movs){
g.drawimage(img, 0, 0, (int)pwidth,(int)pheight, (int)movs, 0, (int)(pwidth+movs), (int)pheight, null);
}
if(bgwidth<=pwidth+movs){
headmovs=pwidth+movs-bgwidth;
g.drawimage(img, 0, 0, (int)(pwidth-headmovs),(int)pheight, (int)movs, 0, (int)(bgwidth), (int)pheight, null);
g.drawimage(img,(int)(pwidth-headmovs), 0, (int)pwidth,(int)pheight, 0, 0, (int)(headmovs), (int)pheight, null);
if(headmovs>=pwidth){
//重新初始化所有变量数据，循环
movs=headmovs-pwidth;
}
}
movs+=speed;
//===================================================
}
public static void main(string[] args) {
gameframe gf=new gameframe();
gf.launchframe();
}
}
//=================================
import java.awt.frame;
import java.awt.graphics;
import java.awt.event.windowadapter;
import java.awt.event.windowevent;
import java.awt.image.bufferedimage;
import mine.game.util.propertiesutil;
@suppresswarnings("serial")
public class myframe extends frame{
private bufferedimage imgbuffer;
private graphics gbuffer;
public void launchframe(){
int wd=800;//propertiesutil.getvalue("width", "game.properties");
int ht=600;//propertiesutil.getvalue("height", "game.properties");
setsize(wd,ht);
 setlocation(0, 0);
 setvisible(true); 
 new paintthread().start(); 
 addwindowlistener(new windowadapter() {
@override
public void windowclosing(windowevent e) {
system.exit(0);
} 
});
}
//重画窗口线程，内部类
class paintthread extends thread{
public void run(){
while(true){
repaint();
try {
thread.sleep(10);
} catch (interruptedexception e) {
e.printstacktrace();
}
}
}
}
/**
 * 双缓冲解决，屏闪.此方法在，继承frame的awt编程中才有效。jfram不凑效,其有自己先进的实现方式（自己猜的，有时间学学）
 */
@override
public void update(graphics g) {
if(imgbuffer==null){
imgbuffer=(bufferedimage)createimage(this.getwidth(),this.getsize().height);//创建图形缓冲
//imgbuffer=new bufferedimage((int)this.getsize().getwidth(),(int)this.getsize().getheight(),bufferedimage.type_4byte_abgr);//创建图形缓冲
}
gbuffer=imgbuffer.getgraphics();//获取图形缓冲区的图形上下文
 gbuffer.fillrect(0, 0, this.getwidth(), this.getheight());
this.paint(gbuffer);//用paint方法中编写的绘图过程对图形缓冲区绘图
gbuffer.dispose();//释放图形上下文资源
g.drawimage(imgbuffer, 0, 0, null);//将图形缓冲区绘制到屏幕上
}
}
//====================
import java.awt.image;
import java.awt.toolkit;
import java.net.url;
public class imageutil {
public static image imageload(string path){
url u=imageutil.class.getclassloader().getresource(path);
return toolkit.getdefaulttoolkit().getimage(u);
}
}

希望以上内容代码对您有所帮助