复制代码

复制代码

复制代码

复制代码

1. import android.app.Activity;
2. import android.content.Context;
3. import android.content.pm.ActivityInfo;
4. import android.graphics.Bitmap;
5. import android.graphics.BitmapFactory;
6. import android.graphics.Canvas;
7. import android.graphics.Color;
8. import android.graphics.Paint;
9. import android.hardware.Sensor;
10. import android.hardware.SensorEvent;
11. import android.hardware.SensorEventListener;
12. import android.hardware.SensorManager;
13. import android.os.Bundle;
14. import android.view.SurfaceHolder;
15. import android.view.SurfaceView;
16. import android.view.Window;
17. import android.view.WindowManager;
18. import android.view.SurfaceHolder.Callback;
19. public class SurfaceViewAcitvity extends Activity {
20. MyView mAnimView = null;
21. @Override
22. public void onCreate(Bundle savedInstanceState) {
23. super.onCreate(savedInstanceState);
24. // 全屏显示窗口
25. requestWindowFeature(Window.FEATURE_NO_TITLE);
26. getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
27. WindowManager.LayoutParams.FLAG_FULLSCREEN);
28. //强制横屏
29. setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
30. // 显示自定义的游戏View
31. mAnimView = new MyView(this);
32. setContentView(mAnimView);
33. }
34. public class MyView extends SurfaceView implements Callback,Runnable ,SensorEventListener{
35. /**每50帧刷新一次屏幕**/
36. public static final int TIME_IN_FRAME = 50;
37. /** 游戏画笔 **/
38. Paint mPaint = null;
39. Paint mTextPaint = null;
40. SurfaceHolder mSurfaceHolder = null;
41. /** 控制游戏更新循环 **/
42. boolean mRunning = false;
43. /** 游戏画布 **/
44. Canvas mCanvas = null;
45. /**控制游戏循环**/
46. boolean mIsRunning = false;
47. /**SensorManager管理器**/
48. private SensorManager mSensorMgr = null;
49. Sensor mSensor = null;
50. /**手机屏幕宽高**/
51. int mScreenWidth = 0;
52. int mScreenHeight = 0;
53. /**小球资源文件越界区域**/
54. private int mScreenBallWidth = 0;
55. private int mScreenBallHeight = 0;
56. /**游戏背景文件**/
57. private Bitmap mbitmapBg;
58. /**小球资源文件**/
59. private Bitmap mbitmapBall;
60. /**小球的坐标位置**/
61. private float mPosX = 200;
62. private float mPosY = 0;
63. /**重力感应X轴 Y轴 Z轴的重力值**/
64. private float mGX = 0;
65. private float mGY = 0;
66. private float mGZ = 0;
67. public MyView(Context context) {
68. super(context);
69. /** 设置当前View拥有控制焦点 **/
70. this.setFocusable(true);
71. /** 设置当前View拥有触摸事件 **/
72. this.setFocusableInTouchMode(true);
73. /** 拿到SurfaceHolder对象 **/
74. mSurfaceHolder = this.getHolder();
75. /** 将mSurfaceHolder添加到Callback回调函数中 **/
76. mSurfaceHolder.addCallback(this);
77. /** 创建画布 **/
78. mCanvas = new Canvas();
79. /** 创建曲线画笔 **/
80. mPaint = new Paint();
81. mPaint.setColor(Color.WHITE);
82. /**加载小球资源**/
83. mbitmapBall = BitmapFactory.decodeResource(this.getResources(), R.drawable.ball);
84. /**加载游戏背景**/
85. mbitmapBg = BitmapFactory.decodeResource(this.getResources(), R.drawable.bg);
86. /**得到SensorManager对象**/
87. mSensorMgr = (SensorManager) getSystemService(SENSOR_SERVICE);
88. mSensor = mSensorMgr.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
89. // 注册listener，第三个参数是检测的精确度
90. //SENSOR_DELAY_FASTEST 最灵敏 因为太快了没必要使用
91. //SENSOR_DELAY_GAME    游戏开发中使用
92. //SENSOR_DELAY_NORMAL  正常速度
93. //SENSOR_DELAY_UI                最慢的速度
94. mSensorMgr.registerListener(this, mSensor, SensorManager.SENSOR_DELAY_GAME);
95. }
96. private void Draw() {
97. /**绘制游戏背景**/
98. mCanvas.drawBitmap(mbitmapBg,0,0, mPaint);
99. /**绘制小球**/
100. mCanvas.drawBitmap(mbitmapBall, mPosX,mPosY, mPaint);
101. /**X轴 Y轴 Z轴的重力值**/
102. mCanvas.drawText(“X轴重力值 ：” + mGX, 0, 20, mPaint);
103. mCanvas.drawText(“Y轴重力值 ：” + mGY, 0, 40, mPaint);
104. mCanvas.drawText(“Z轴重力值 ：” + mGZ, 0, 60, mPaint);
105. }
106. @Override
107. public void surfaceChanged(SurfaceHolder holder, int format, int width,
108. int height) {
109. }
110. @Override
111. public void surfaceCreated(SurfaceHolder holder) {
112. /**开始游戏主循环线程**/
113. mIsRunning = true;
114. new Thread(this).start();
115. /**得到当前屏幕宽高**/
116. mScreenWidth = this.getWidth();
117. mScreenHeight = this.getHeight();
118. /**得到小球越界区域**/
119. mScreenBallWidth = mScreenWidth – mbitmapBall.getWidth();
120. mScreenBallHeight = mScreenHeight – mbitmapBall.getHeight();
121. }
122. @Override
123. public void surfaceDestroyed(SurfaceHolder holder) {
124. mIsRunning = false;
125. }
126. @Override
127. public void run() {
128. while (mIsRunning) {
129. /** 取得更新游戏之前的时间 **/
130. long startTime = System.currentTimeMillis();
131. /** 在这里加上线程安全锁 **/
132. synchronized (mSurfaceHolder) {
133. /** 拿到当前画布 然后锁定 **/
134. mCanvas = mSurfaceHolder.lockCanvas();
135. Draw();
136. /** 绘制结束后解锁显示在屏幕上 **/
137. mSurfaceHolder.unlockCanvasAndPost(mCanvas);
138. }
139. /** 取得更新游戏结束的时间 **/
140. long endTime = System.currentTimeMillis();
141. /** 计算出游戏一次更新的毫秒数 **/
142. int diffTime = (int) (endTime – startTime);
143. /** 确保每次更新时间为50帧 **/
144. while (diffTime <= TIME_IN_FRAME) {
145. diffTime = (int) (System.currentTimeMillis() – startTime);
146. /** 线程等待 **/
147. Thread.yield();
148. }
149. }
150. }
151. @Override
152. public void onAccuracyChanged(Sensor arg0, int arg1) {
153. // TODO Auto-generated method stub
154. }
155. @Override
156. public void onSensorChanged(SensorEvent event) {
157. mGX = event.values[SensorManager.DATA_X];
158. mGY= event.values[SensorManager.DATA_Y];
159. mGZ = event.values[SensorManager.DATA_Z];
160. //这里乘以2是为了让小球移动的更快
161. mPosX -= mGX * 2;
162. mPosY += mGY * 2;
163. //检测小球是否超出边界
164. if (mPosX < 0) {
165. mPosX = 0;
166. } else if (mPosX > mScreenBallWidth) {
167. mPosX = mScreenBallWidth;
168. }
169. if (mPosY < 0) {
170. mPosY = 0;
171. } else if (mPosY > mScreenBallHeight) {
172. mPosY = mScreenBallHeight;
173. }
174. }
175. }
176. }