Monitor phone shake (shake) Sensoreventlistener

2. Import Android.content.Context;
4. Import Android.hardware.Sensor;
6. Import android.hardware.SensorEvent;
8. Import Android.hardware.SensorEventListener;
10. Import Android.hardware.SensorManager;
14. /**
16. *
18. * A monitor that detects phone shake
20. * @author Fuzhengchao
22. *
24. */
26. Public class Shakelistener implements Sensoreventlistener {
28. //Speed threshold, which acts when the shaking speed reaches this value
30. private static final int speed_shreshold = 4000;
32. //Two time interval of detection
34. private static final int uptate_interval_time = 70;
38. //Sensor manager
40. private Sensormanager Sensormanager;
42. //Sensor
44. private sensor sensor;
46. //Gravity sensor listener
48. private Onshakelistener Onshakelistener;
50. //Context
52. private context context;
54. //Cell phone position when the gravity sensor coordinates
56. private float lastx;
58. private float lasty;
60. private float Lastz;
64. //Last detection time
66. private long lastupdatetime;
70. //Builder
72. Public Shakelistener (Context c) {
74. //Get Listener Object
76. context = C;
78. Start ();
80. }
84. //Start
86. public void Start () {
88. //Get the Sensor manager
90. Sensormanager = (Sensormanager) context.getsystemservice (Context.sensor_service);
92. if (sensormanager! = null) {
94. //Get gravity sensor
96. Sensor = Sensormanager.getdefaultsensor (Sensor.type_accelerometer);
98. }
100. //Registration
102. if (sensor! = null) {
104. Sensormanager.registerlistener (this, sensor, sensormanager.sensor_delay_game);
106. }
110. }
114. //Stop detection
116. public void Stop () {
118. Sensormanager.unregisterlistener (this);
120. }
124. //Shake Monitoring interface
126. Public interface Onshakelistener {
128. public void Onshake ();
130. }
134. //Set Gravity Sensor listener
136. public void Setonshakelistener (Onshakelistener listener) {
138. Onshakelistener = listener;
140. }
146. //gravity sensor sensing for change data
148. public void Onsensorchanged (Sensorevent event) {
150. //Current detection time
152. Long currentupdatetime = System.currenttimemillis ();
154. //Two time interval of detection
156. long timeinterval = Currentupdatetime-lastupdatetime;
158. //Determine if the detection interval is reached
160. if (TimeInterval < uptate_interval_time)
162. return;
164. //The time now becomes last time
166. LastUpdateTime = Currentupdatetime;
170. //Get x, y, Z coordinates
172. float x = event.values[0];
174. float y = event.values[1];
176. float z = event.values[2];
180. //Get change values for x, Y, z
182. float deltax = x-lastx;
184. float deltay = y-lasty;
186. float Deltaz = Z-lastz;
190. //Turn the current coordinates into the last coordinates
192. LASTX = x;
194. Lasty = y;
196. Lastz = Z;
200. Double speed = math.sqrt (deltax*deltax + deltay*deltay + Deltaz*deltaz)/timeinterval * 10000;
202. //To reach the speed threshold, send a hint
204. if (speed >= speed_shreshold)
206. Onshakelistener.onshake ();
208. }
212. public void onaccuracychanged (sensor sensor, int accuracy) {
216. }
220. }

Usage:

Java Code

2. Shakelistener Shakelistener = new Shakelistener (this); Create an object
4. Shakelistener.setonshakelistener (new Onshakelistener () {//Call Setonshakelistener method for listening
8. Public void Onshake () {
10. //The handling of the mobile phone after shaking (such as changing songs, changing pictures, shaking ...) )
12. //onvibrator ();
14. }
18. });

Vibration

Java Code

2. Private void Onvibrator () {
4. Vibrator Vibrator = (Vibrator) context.getsystemservice (Context.vibrator_service);
6. if (vibrator = = null) {
8. Vibrator Localvibrator = (vibrator) Context.getapplicationcontext ()
10. . Getsystemservice ("Vibrator");
12. Vibrator = Localvibrator;
14. }
16. Vibrator.vibrate (100L);
18. }

Shake a thin Code implementation
Http://blog.sina.com.cn/s/blog_66cfbaa5010120w8.html

Android similar to Qihoo 360 mobile phone in the guardian of the shaking effect achieved
http://blog.csdn.net/nono_love_lilith/article/details/7554341

Monitor phone shake (shake) Sensoreventlistener