1. package JavaApplet;
   
2. 
   
3. import java.applet.Applet;
   
4. import java.awt.Color;
   
5. import java.awt.Graphics;
   
6. import java.awt.Image;
   
7. import java.awt.MediaTracker;
   
8. import java.util.ArrayList;
   
9. import java.util.List;
   
10. //在Applet上绘制一个图像,可以调用drawImage静态方法
    
11. public class JavaAppletDemo extends Applet
    
12. {
    
13. private MediaTracker mt;//来控制图片是否完全被加载
    
14. private int imageSum = 5; //图片总数为10
    
15. private Image image[];
    
16. private int currentImage;//当前绘制的图像索引
    
17. //双缓冲技术
    
18. private Image imageBuff;
    
19. private Graphics grs;
    
20. public void init() {
    
21. mt = new MediaTracker(this);//跟踪本对象
    
22. imageBuff = createImage(600, 400);//创建图片缓冲
    
23. grs = imageBuff.getGraphics();//将imageBuff关联到绘图
    
24. grs.setColor(Color.WHITE);
    
25. grs.fillRect(0, 0, 600, 400);
    
26. image = new Image[imageSum];//为数组分配空间
    
27. for(int x=0;x<imageSum;x++)
    
28. 
    
29. {
    
30. image[x] = getImage(getDocumentBase(),(x+1)+".gif");//getDocumentBase来返回URL路径
    
31. mt.addImage(image[x], x);//将跟踪的图片添加到跟踪器
    
32. }
    
33. try {
    
34. mt.waitForID(0);
    
35. } catch (InterruptedException e) {
    
36. 
    
37. e.printStackTrace();
    
38. }
    
39. 
    
40. System.out.println(getDocumentBase());
    
41. System.out.println(getCodeBase());
    
42. }
    
43. @Override
    
44. public void start() {
    
45. currentImage = 0;//每次从新启动的时候图片的索引都被初始化
    
46. grs.drawImage(image[currentImage],0 , 0, this);//将图形绘制到缓冲区当中
    
47. currentImage = 1;
    
48. }
    
49. @Override
    
50. public void stop() {
    
51. 
    
52. }
    
53. @Override
    
54. public void destroy() {
    
55. 
    
56. }
    
57. 
    
58. 
    
59. int x=0;//移动的坐标
    
60. public void paint(Graphics g) {
    
61. 
    
62. g.drawImage(imageBuff, 0, 0, this);
    
63. if(mt.checkID(currentImage,true))
    
64. {
    
65. grs.fillRect(0, 0, 600, 400);
    
66. grs.drawImage(image[currentImage], x, 10, this);
    
67. x++;
    
68. // currentImage =++currentImage%10;
    
69. currentImage++;
    
70. if(currentImage==imageSum){currentImage=0;}
    
71. 
    
72. }
    
73. try {
    
74. 
    
75. Thread.sleep(100);
    
76. } catch (InterruptedException e) {
    
77. 
    
78. e.printStackTrace();
    
79. }
    
80. 
    
81. repaint();
    
82. 
    
83. }
    
84. 
    
85. public void update(Graphics g) {
    
86. <FONT color=red>//去除闪烁 我在这里重写了 update方法 为什么还会闪烁？</FONT>
    
87. paint(g);
    
88. }
    
89. 
    
90. }
    

复制代码

申请加分