{"id":205240,"date":"2023-08-07T10:39:18","date_gmt":"2023-08-07T02:39:18","guid":{"rendered":"https:\/\/www.idc.net\/help\/205240\/"},"modified":"2023-08-07T10:39:18","modified_gmt":"2023-08-07T02:39:18","slug":"android-%e8%ae%a9%e6%b8%b8%e6%88%8f%e4%ba%ba%e7%89%a9%e5%9c%a8%e5%b1%8f%e5%b9%95%e4%b8%8a%e6%98%be%e7%a4%ba","status":"publish","type":"post","link":"https:\/\/idc.net\/help\/205240\/","title":{"rendered":"Android \u8ba9\u6e38\u620f\u4eba\u7269\u5728\u5c4f\u5e55\u4e0a\u663e\u793a"},"content":{"rendered":"

Java\u4ee3\u7801\uff1a<\/strong><\/p>\n

\n \n \n 
    \n  \n  \n  
  1. package eoe.demo;   <\/span><\/span><\/li>\n  \n  \n  
  2. import android.content.Context;   <\/span><\/li>\n  \n  \n  
  3. import android.content.res.Resources;   <\/span><\/li>\n  \n  \n  
  4. import android.graphics.Bitmap;   <\/span><\/li>\n  \n  \n  
  5. import android.graphics.BitmapFactory;   <\/span><\/li>\n  \n  \n  
  6. import android.graphics.Canvas;   <\/span><\/li>\n  \n  \n  
  7. import android.graphics.Color;   <\/span><\/li>\n  \n  \n  
  8. import android.graphics.Paint;   <\/span><\/li>\n  \n  \n  
  9. import android.util.Log;   <\/span><\/li>\n  \n  \n  
  10. import android.view.KeyEvent;   <\/span><\/li>\n  \n  \n  
  11. import android.view.SurfaceHolder;   <\/span><\/li>\n  \n  \n  
  12. import android.view.SurfaceView;   <\/span><\/li>\n  \n  \n  
  13. import android.view.SurfaceHolder.Callback;   <\/span><\/li>\n  \n  \n  
  14. public class MySurfaceView extends SurfaceView implements Callback, Runnable {   <\/span><\/li>\n  \n  \n  
  15. private Thread <\/span>th<\/span> = <\/span>new<\/span> Thread(this);   <\/span><\/li>\n  \n  \n  
  16. private SurfaceHolder sfh;   <\/span><\/li>\n  \n  \n  
  17. private int SH, SW;   <\/span><\/li>\n  \n  \n  
  18. private Canvas canvas;   <\/span><\/li>\n  \n  \n  
  19. private Paint p;   <\/span><\/li>\n  \n  \n  
  20. private Paint p2;   <\/span><\/li>\n  \n  \n  
  21. private Resources res;   <\/span><\/li>\n  \n  \n  
  22. private Bitmap bmp;   <\/span><\/li>\n  \n  \n  
  23. private int <\/span>bmp_x<\/span> = <\/span>100<\/span>, <\/span>bmp_y<\/span> = <\/span>100<\/span>;   <\/span><\/li>\n  \n  \n  
  24. private boolean UP, DOWN, LEFT, RIGHT;   <\/span><\/li>\n  \n  \n  
  25. private int animation_up[] = { 3, 4, 5 };   <\/span><\/li>\n  \n  \n  
  26. private int animation_down[] = { 0, 1, 2 };   <\/span><\/li>\n  \n  \n  
  27. private int animation_left[] = { 6, 7, 8 };   <\/span><\/li>\n  \n  \n  
  28. private int animation_right[] = { 9, 10, 11 };   <\/span><\/li>\n  \n  \n  
  29. private int animation_init[] = animation_down;   <\/span><\/li>\n  \n  \n  
  30. private int frame_count;   <\/span><\/li>\n  \n  \n  
  31. public MySurfaceView(Context context) {   <\/span><\/li>\n  \n  \n  
  32. super(context);   <\/span><\/li>\n  \n  \n  
  33. this.setKeepScreenOn(true);   <\/span><\/li>\n  \n  \n  
  34. res<\/span> = <\/span>this<\/span>.getResources();   <\/span><\/li>\n  \n  \n  
  35. bmp<\/span> = <\/span>BitmapFactory<\/span>.decodeResource(res, R.drawable.enemy1);   <\/span><\/li>\n  \n  \n  
  36. sfh<\/span> = <\/span>this<\/span>.getHolder();   <\/span><\/li>\n  \n  \n  
  37. sfh.addCallback(this);   <\/span><\/li>\n  \n  \n  
  38. p<\/span> = <\/span>new<\/span> Paint();   <\/span><\/li>\n  \n  \n  
  39. p.setColor(Color.YELLOW);   <\/span><\/li>\n  \n  \n  
  40. p2<\/span> = <\/span>new<\/span> Paint();   <\/span><\/li>\n  \n  \n  
  41. p2.setColor(Color.RED);   <\/span><\/li>\n  \n  \n  
  42. p.setAntiAlias(true);   <\/span><\/li>\n  \n  \n  
  43. setFocusable(true); \/\/\u5907\u6ce81   <\/span><\/li>\n  \n  \n  
  44. }   <\/span><\/li>\n  \n  \n  
  45. public void surfaceCreated(SurfaceHolder holder) {   <\/span><\/li>\n  \n  \n  
  46. SH<\/span> = <\/span>this<\/span>.getHeight();   <\/span><\/li>\n  \n  \n  
  47. SW<\/span> = <\/span>this<\/span>.getWidth();   <\/span><\/li>\n  \n  \n  
  48. th.start();   <\/span><\/li>\n  \n  \n  
  49. }   <\/span><\/li>\n  \n  \n  
  50. public void draw() {   <\/span><\/li>\n  \n  \n  
  51. canvas<\/span> = <\/span>sfh<\/span>.lockCanvas();   <\/span><\/li>\n  \n  \n  
  52. canvas.drawRect(0, 0, SW, SH, p); \/\/\u5907\u6ce82   <\/span><\/li>\n  \n  \n  
  53. canvas.save(); \/\/\u5907\u6ce83   <\/span><\/li>\n  \n  \n  
  54. canvas.drawText(\"Himi\", bmp_x-2, bmp_y-10, p2);   <\/span><\/li>\n  \n  \n  
  55. canvas.clipRect(bmp_x, bmp_y, bmp_x + bmp.getWidth() \/ 13, bmp_y+bmp.getHeight());   <\/span><\/li>\n  \n  \n  
  56. if (<\/span>animation_init<\/span> == animation_up) {   <\/span><\/li>\n  \n  \n  
  57. canvas.drawBitmap(bmp, bmp_x - animation_up[frame_count] * (bmp.getWidth() \/ 13), bmp_y, p);   <\/span><\/li>\n  \n  \n  
  58. } else if (<\/span>animation_init<\/span> == animation_down) {   <\/span><\/li>\n  \n  \n  
  59. canvas.drawBitmap(bmp, bmp_x - animation_down[frame_count] * (bmp.getWidth() \/ 13), bmp_y, p);   <\/span><\/li>\n  \n  \n  
  60. } else if (<\/span>animation_init<\/span> == animation_left) {   <\/span><\/li>\n  \n  \n  
  61. canvas.drawBitmap(bmp, bmp_x - animation_left[frame_count] * (bmp.getWidth() \/ 13), bmp_y, p);   <\/span><\/li>\n  \n  \n  
  62. } else if (<\/span>animation_init<\/span> == animation_right) {   <\/span><\/li>\n  \n  \n  
  63. canvas.drawBitmap(bmp, bmp_x - animation_right[frame_count] * (bmp.getWidth() \/ 13), bmp_y, p);   <\/span><\/li>\n  \n  \n  
  64. }   <\/span><\/li>\n  \n  \n  
  65. canvas.restore(); \/\/\u5907\u6ce83   <\/span><\/li>\n  \n  \n  
  66. sfh.unlockCanvasAndPost(canvas);   <\/span><\/li>\n  \n  \n  
  67. }   <\/span><\/li>\n  \n  \n  
  68. public void cycle() {   <\/span><\/li>\n  \n  \n  
  69.      if (DOWN) {   <\/span><\/li>\n  \n  \n  
  70.      bmp_y += 5;   <\/span><\/li>\n  \n  \n  
  71. } else if (UP) {   <\/span><\/li>\n  \n  \n  
  72.     bmp_y <\/span>-<\/span>= <\/span>5<\/span>;   <\/span><\/li>\n  \n  \n  
  73. } else if (LEFT) {   <\/span><\/li>\n  \n  \n  
  74.     bmp_x <\/span>-<\/span>= <\/span>5<\/span>;   <\/span><\/li>\n  \n  \n  
  75. } else if (RIGHT) {   <\/span><\/li>\n  \n  \n  
  76.     bmp_x += 5;   <\/span><\/li>\n  \n  \n  
  77. }   <\/span><\/li>\n  \n  \n  
  78. if (DOWN || UP || LEFT || RIGHT) {   <\/span><\/li>\n  \n  \n  
  79. if (frame_count <\/span><<\/span> <\/span>2<\/span>) {   <\/span><\/li>\n  \n  \n  
  80. frame_count++;   <\/span><\/li>\n  \n  \n  
  81. } else {   <\/span><\/li>\n  \n  \n  
  82.    <\/span>frame_count<\/span> = <\/span>0<\/span>;   <\/span><\/li>\n  \n  \n  
  83. }   <\/span><\/li>\n  \n  \n  
  84. }   <\/span><\/li>\n  \n  \n  
  85. if (<\/span>DOWN<\/span> == false && <\/span>UP<\/span> == false && <\/span>LEFT<\/span> == false && <\/span>RIGHT<\/span> == false) {   <\/span><\/li>\n  \n  \n  
  86.     <\/span>frame_count<\/span> = <\/span>0<\/span>;   <\/span><\/li>\n  \n  \n  
  87. }   <\/span><\/li>\n  \n  \n  
  88. }   <\/span><\/li>\n  \n  \n  
  89. @Override   <\/span><\/li>\n  \n  \n  
  90. public boolean onKeyDown(int key, KeyEvent event) {   <\/span><\/li>\n  \n  \n  
  91. if (<\/span>key<\/span> == KeyEvent.KEYCODE_DPAD_UP) {   <\/span><\/li>\n  \n  \n  
  92. if (<\/span>UP<\/span> == false) {   <\/span><\/li>\n  \n  \n  
  93.     <\/span>animation_init<\/span> = <\/span>animation_up<\/span>;   <\/span><\/li>\n  \n  \n  
  94. }   <\/span><\/li>\n  \n  \n  
  95.   <\/span>UP<\/span> = <\/span>true<\/span>;   <\/span><\/li>\n  \n  \n  
  96. } else if (<\/span>key<\/span> == KeyEvent.KEYCODE_DPAD_DOWN) {   <\/span><\/li>\n  \n  \n  
  97. if (<\/span>DOWN<\/span> == false) {   <\/span><\/li>\n  \n  \n  
  98.    <\/span>animation_init<\/span> = <\/span>animation_down<\/span>;   <\/span><\/li>\n  \n  \n  
  99. }   <\/span><\/li>\n  \n  \n  
  100.    <\/span>DOWN<\/span> = <\/span>true<\/span>;   <\/span><\/li>\n  \n  \n  
  101. } else if (<\/span>key<\/span> == KeyEvent.KEYCODE_DPAD_LEFT) {   <\/span><\/li>\n  \n  \n  
  102. if (<\/span>LEFT<\/span> == false) {   <\/span><\/li>\n  \n  \n  
  103.    <\/span>animation_init<\/span> = <\/span>animation_left<\/span>;   <\/span><\/li>\n  \n  \n  
  104. }   <\/span><\/li>\n  \n  \n  
  105. LEFT<\/span> = <\/span>true<\/span>;   <\/span><\/li>\n  \n  \n  
  106. } else if (<\/span>key<\/span> == KeyEvent.KEYCODE_DPAD_RIGHT) {   <\/span><\/li>\n  \n  \n  
  107.  if (<\/span>RIGHT<\/span> == false) {   <\/span><\/li>\n  \n  \n  
  108.     <\/span>animation_init<\/span> = <\/span>animation_right<\/span>;   <\/span><\/li>\n  \n  \n  
  109. }   <\/span><\/li>\n  \n  \n  
  110. RIGHT<\/span> = <\/span>true<\/span>;   <\/span><\/li>\n  \n  \n  
  111. }   <\/span><\/li>\n  \n  \n  
  112. return super.onKeyDown(key, event);   <\/span><\/li>\n  \n  \n  
  113. }   <\/span><\/li>\n  \n  \n  
  114. \/* (non-Javadoc)   <\/span><\/li>\n  \n  \n  
  115. * @see android.view.View#onKeyUp(int, android.view.KeyEvent)   <\/span><\/li>\n  \n  \n  
  116. *\/   <\/span><\/li>\n  \n  \n  
  117. @Override   <\/span><\/li>\n  \n  \n  
  118. public boolean onKeyUp(int keyCode, KeyEvent event) {   <\/span><\/li>\n  \n  \n  
  119. if (DOWN) {   <\/span><\/li>\n  \n  \n  
  120.   <\/span>DOWN<\/span> = <\/span>false<\/span>;   <\/span><\/li>\n  \n  \n  
  121. } else if (UP) {   <\/span><\/li>\n  \n  \n  
  122.   <\/span>UP<\/span> = <\/span>false<\/span>;   <\/span><\/li>\n  \n  \n  
  123. } else if (LEFT) {   <\/span><\/li>\n  \n  \n  
  124.   <\/span>LEFT<\/span> = <\/span>false<\/span>;   <\/span><\/li>\n  \n  \n  
  125. } else if (RIGHT) {   <\/span><\/li>\n  \n  \n  
  126.   <\/span>RIGHT<\/span> = <\/span>false<\/span>;   <\/span><\/li>\n  \n  \n  
  127. }   <\/span><\/li>\n  \n  \n  
  128. return super.onKeyUp(keyCode, event);   <\/span><\/li>\n  \n  \n  
  129. }   <\/span><\/li>\n  \n  \n  
  130. @Override   <\/span><\/li>\n  \n  \n  
  131. public void run() {   <\/span><\/li>\n  \n  \n  
  132. \/\/ TODO Auto-generated method stub   <\/span><\/li>\n  \n  \n  
  133. while (true) {   <\/span><\/li>\n  \n  \n  
  134. draw();   <\/span><\/li>\n  \n  \n  
  135. cycle();   <\/span><\/li>\n  \n  \n  
  136. try {   <\/span><\/li>\n  \n  \n  
  137. Thread.sleep(100);   <\/span><\/li>\n  \n  \n  
  138. } catch (Exception ex) {   <\/span><\/li>\n  \n  \n  
  139. }   <\/span><\/li>\n  \n  \n  
  140. }   <\/span><\/li>\n  \n  \n  
  141. }   <\/span><\/li>\n  \n  \n  
  142. @Override   <\/span><\/li>\n  \n  \n  
  143. public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {   <\/span><\/li>\n  \n  \n  
  144. \/\/ TODO Auto-generated method stub   <\/span><\/li>\n  \n  \n  
  145. }   <\/span><\/li>\n  \n  \n  
  146. @Override   <\/span><\/li>\n  \n  \n  
  147. public void surfaceDestroyed(SurfaceHolder holder) {   <\/span><\/li>\n  \n  \n  
  148. \/\/ TODO Auto-generated method stub   <\/span><\/li>\n  \n  \n  
  149. }   <\/span><\/li>\n  \n  \n  
  150. } <\/span><\/<\/span>STRONG<\/span>><\/span> <\/span><\/li>\n \n \n <\/ol><\/pre>\n
    \u5907\u6ce81 <\/strong><\/p>\n
    \u6b64\u65b9\u6cd5\u662f\u7528\u6765\u54cd\u5e94\u6309\u952e\uff01\u5982\u679c\u662f\u81ea\u5df1\u5b9a\u4e49\u4e00\u4e2a\u7ee7\u627f\u81eaView\u7684\u7c7b,\u91cd\u65b0\u5b9e\u73b0onKeyDown\u65b9\u6cd5\u540e,\u53ea\u6709\u5f53\u8be5View\u83b7\u5f97\u7126\u70b9\u65f6\u624d\u4f1a\u8c03\u7528onKeyDown\u65b9\u6cd5,Actvity\u4e2d\u7684onKeyDown\u65b9\u6cd5\u662f\u5f53\u6240\u6709\u63a7\u4ef6\u5747\u6ca1\u6709\u5904\u7406\u8be5\u6309\u952e\u4e8b\u4ef6\u65f6,\u624d\u4f1a\u8c03\u7528.<\/p>\n
    \u5907\u6ce82<\/strong><\/p>\n
    \u8fd9\u91cc\u4e5f\u662f\u5bf9\u5c4f\u5e55\u8fdb\u884c\u5237\u5c4f\u64cd\u4f5c\uff0c\u5176\u5b9e\u8fd9\u4e5f\u53ea\u662f\u4e00\u79cd\uff0c\u4e4b\u524d\u6587\u7ae0\u91cc\u6211\u4e5f\u7528\u5230drawRGB\u7684\u65b9\u6cd5\u540c\u6837\u5b9e\u73b0\uff0c\u5f53\u7136\u4e5f\u53ef\u4ee5\u7528fillRect\u7b49\u6765\u5237\u5c4f\u3002<\/p>\n
    \u90a3\u4e48\u8fd9\u91cc\u6211\u60f3\u8bf4\u4e0b\uff0c\u5728\u7ee7\u627fview\u4e2d\uff0c\u56e0\u4e3aonDraw\u65b9\u6cd5\u662f\u7cfb\u7edf\u81ea\u52a8\u8c03\u7528\u7684\uff0c\u4e0d\u50cf\u5728surfaceview\u8fd9\u91cc\u8fd9\u6837\u53bb\u5728run\u91cc\u9762\u81ea\u5df1\u53bb\u4e0d\u65ad\u8c03\u7528\uff0c\u5728view\u4e2d\u6211\u4eec\u53ef\u4ee5\u62b5\u7528 invalidate()\/postInvalidate() \u8fd9\u4e24\u79cd\u65b9\u6cd5\u5b9e\u73b0\u8ba9\u7cfb\u7edf\u8c03\u7528onDraw\u65b9\u6cd5\uff0c\u8fd9\u91cc\u4e5f\u662f\u548csurfaceview\u4e2d\u7684\u4e0d\u540c\u4e4b\u4e00\uff01<\/p>\n
    \u5907\u6ce83<\/strong><\/p>\n
    \u8fd9\u91cccanvas.save();\u548ccanvas.restore();\u662f\u4e24\u4e2a\u76f8\u4e92\u5339\u914d\u51fa\u73b0\u7684\uff0c\u4f5c\u7528\u662f\u7528\u6765\u4fdd\u5b58\u753b\u5e03\u7684\u72b6\u6001\u548c\u53d6\u51fa\u4fdd\u5b58\u7684\u72b6\u6001\u7684\u3002\u8fd9\u91cc\u7a0d\u5fae\u89e3\u91ca\u4e00\u4e0b\uff0c<\/p>\n
    \u5f53\u6211\u4eec\u5bf9\u753b\u5e03\u8fdb\u884c\u65cb\u8f6c\uff0c\u7f29\u653e\uff0c\u5e73\u79fb\u7b49\u64cd\u4f5c\u7684\u65f6\u5019\u5176\u5b9e\u6211\u4eec\u662f\u60f3\u5bf9\u7279\u5b9a\u7684\u5143\u7d20\u8fdb\u884c\u64cd\u4f5c\uff0c\u6bd4\u5982\u56fe\u7247\uff0c\u4e00\u4e2a\u77e9\u5f62\u7b49\uff0c\u4f46\u662f\u5f53\u4f60\u7528canvas\u7684\u65b9\u6cd5\u6765\u8fdb\u884c\u8fd9\u4e9b\u64cd\u4f5c\u7684\u65f6\u5019\uff0c\u5176\u5b9e\u662f\u5bf9\u6574\u4e2a\u753b\u5e03\u8fdb\u884c\u4e86\u64cd\u4f5c\uff0c\u90a3\u4e48\u4e4b\u540e\u5728\u753b\u5e03\u4e0a\u7684\u5143\u7d20\u90fd\u4f1a\u53d7\u5230\u5f71\u54cd\uff0c\u6240\u4ee5\u6211\u4eec\u5728\u64cd\u4f5c\u4e4b\u524d\u8c03\u7528canvas.save()\u6765\u4fdd\u5b58\u753b\u5e03\u5f53\u524d\u7684\u72b6\u6001\uff0c\u5f53\u64cd\u4f5c\u4e4b\u540e\u53d6\u51fa\u4e4b\u524d\u4fdd\u5b58\u8fc7\u7684\u72b6\u6001\uff0c\u8fd9\u6837\u5c31\u4e0d\u4f1a\u5bf9\u5176\u4ed6\u7684\u5143\u7d20\u8fdb\u884c\u5f71\u54cd<\/p>\n
    \u3010\u7f16\u8f91\u63a8\u8350\u3011<\/p>\n
    Android\u8f6f\u4ef6\u6e38\u620f\u6c49\u5316\u6559\u7a0b<\/p>\n
    \u516b\u6b3e\u5f00\u6e90Android\u6e38\u620f\u5f15\u64ce<\/p>\n
    \u624b\u673a\u6e38\u620f\u884c\u5bb6\uff1a\u5236\u4f5c\u51faiOS\u7cbe\u54c1\u6e38\u620f\u7684\u5173\u952e\u70b9<\/p>\n
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