Android获取GPS坐标：

Android获取GPS坐标：

1.package an.Android.application;

2.

3.

4.import java.util.Iterator;

5.

6.import android.app.Activity;

7.import android.content.Intent;

8.

9.import android.location.GpsSatellite;

10.import android.location.GpsStatus;

11.import android.location.Location;

12.import android.location.LocationListener;

13.import android.location.LocationManager;

14.import android.os.Bundle;

15.import android.util.Log;

16.import android.view.Menu;

17.import android.view.MenuItem;

18.import android.view.View;

19.import android.widget.Button;

20.import android.widget.Toast;

21.

22.public class SpeedToll extends Activity {

23. /** Called when the activity is first created. */

24.

25.

26. private static final int Search = Menu.FIRST;

27. private static final int Myloc = Menu.FIRST + 1;

28. private static final int Exit = Menu.FIRST + 2;

29.

30.

31. private LocationManager locationManager;

32. private GpsStatus gpsstatus;

33.

34.

35. @Override

36. public void onCreate(Bundle savedInstanceState) {

37.

38. super.onCreate(savedInstanceState);

39. /* 加载main.xml Layout */

40. setContentView(R.layout.desktop);

41. /* 以findViewById()取得Button对象，并加入onClickListener */

42. Button b1 = (Button) findViewById(R.id.button1);

43. b1.setOnClickListener(new Button.OnClickListener()

44. {

45. public void onClick(View v)

46. {

47. /* new一个Intent对象，并指定要启动的class */

48. Intent intent = new Intent();

49. intent.setClass(SpeedToll.this, Map.class);

50. /* 调用一个新的Activity */

51. startActivity(intent);

52. /* 关闭原本的Activity */

53. //SpeedToll.this.finish();

54. }

55. });

56.

57.

58. Button b2 = (Button) findViewById(R.id.button1);

59. b2.setOnClickListener(new Button.OnClickListener()

60. {

61. public void onClick(View v)

62. {

63. /* new一个Intent对象，并指定要启动的class */

64. Intent intent = new Intent();

65. intent.setClass(SpeedToll.this, Map.class);

66. /* 调用一个新的Activity */

67. startActivity(intent);

68. /* 关闭原本的Activity */

69. //SpeedToll.this.finish();

70. }

71. });

72. }

73.

74. public boolean onCreateOptionsMenu(Menu menu) {

75. super.onCreateOptionsMenu(menu);

76. menu.add(0, Search, Menu.NONE, "搜索");

77. menu.add(0, Myloc, Menu.NONE, "定位");

78. menu.add(0, Exit, Menu.NONE, "退出");

79.

80.

81. return true;

82. }//menu

83.

84. public boolean onOptionsItemSelected(MenuItem item)

85. {

86. //super.onOptionsItemSelected(item);

87. switch(item.getItemId()){

88. case Search:

89. //Search();

90. break;

91.

92. case Myloc:

93. GetMyLocation();

94. break;

95.

96. case Exit:

97. //mLocationManager.removeUpdates(this); //关闭GPS

98.

99. this.finish();

100. break;

101. }

102. return super.onOptionsItemSelected(item);

103. }

104.

105.

106. public boolean GetMyLocation(){

107. //获取到LocationManager对象

108. locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);

109.

110. //根据设置的Criteria对象，获取最符合此标准的provider对象

111. String currentProvider = locationManager.getProvider(LocationManager.GPS_PROVIDER).getName();

112.

113. //根据当前provider对象获取最后一次位置信息

114. Location currentLocation = locationManager.getLastKnownLocation(currentProvider);

115. //如果位置信息为null，则请求更新位置信息

116. if(currentLocation == null){

117. locationManager.requestLocationUpdates(currentProvider, 0, 0, locationListener);

118. }

119. //增加GPS状态监听器

120. locationManager.addGpsStatusListener(gpsListener);

121.

122. //直到获得最后一次位置信息为止，如果未获得最后一次位置信息，则显示默认经纬度

123. //每隔10秒获取一次位置信息

124. while(true){

125. currentLocation = locationManager.getLastKnownLocation(currentProvider);

126. if(currentLocation != null){

127. Log.d("Location", "Latitude: " + currentLocation.getLatitude());

128. Log.d("Location", "location: " + currentLocation.getLongitude());

129. Toast.makeText(SpeedToll.this, "Latitude: " + currentLocation.getLatitude()+ " "

130. +"location: " + currentLocation.getLongitude(), Toast.LENGTH_SHORT).show();

131. break;

132. }else{

133. Log.d("Location", "Latitude: " + 0);

134. Log.d("Location", "location: " + 0);

135. }

136. try {

137. Thread.sleep(10000);

138. } catch (InterruptedException e) {

139. Log.e("Location", e.getMessage());

140. }

141. }

142. return false;

143. }

144.

145. private GpsStatus.Listener gpsListener = new GpsStatus.Listener(){

146. //GPS状态发生变化时触发

147. @Override

148. public void onGpsStatusChanged(int event) {

149. //获取当前状态

150. gpsstatus=locationManager.getGpsStatus(null);

151. switch(event){

152. //第一次定位时的事件

153. case GpsStatus.GPS_EVENT_FIRST_FIX:

154. break;

155. //开始定位的事件

156. case GpsStatus.GPS_EVENT_STARTED:

157. break;

158. //发送GPS卫星状态事件

159. case GpsStatus.GPS_EVENT_SATELLITE_STATUS:

160. Toast.makeText(SpeedToll.this, "GPS_EVENT_SATELLITE_STATUS", Toast.LENGTH_SHORT).show();

161. Iterable<GpsSatellite> allSatellites = gpsstatus.getSatellites();

162. Iterator<GpsSatellite> it=allSatellites.iterator();

163. int count = 0;

164. while(it.hasNext())

165. {

166. count++;

167. }

168. Toast.makeText(SpeedToll.this, "Satellite Count:" + count, Toast.LENGTH_SHORT).show();

169. break;

170. //停止定位事件

171. case GpsStatus.GPS_EVENT_STOPPED:

172. Log.d("Location", "GPS_EVENT_STOPPED");

173. break;

174. }

175. }

176. };

177.

178.

179. //创建位置监听器

180. private LocationListener locationListener = new LocationListener(){

181. //位置发生改变时调用

182. @Override

183. public void onLocationChanged(Location location) {

184. Log.d("Location", "onLocationChanged");

185. }

186.

187. //provider失效时调用

188. @Override

189. public void onProviderDisabled(String provider) {

190. Log.d("Location", "onProviderDisabled");

191. }

192.

193. //provider启用时调用

194. @Override

195. public void onProviderEnabled(String provider) {

196. Log.d("Location", "onProviderEnabled");

197. }

198.

199. //状态改变时调用

200. @Override

201. public void onStatusChanged(String provider, int status, Bundle extras) {

202. Log.d("Location", "onStatusChanged");

203. }

204.

205.

206. };

207.

208.}

主要有两个文件，一个是主文件，一个是xml文件。

更多Android相关信息见Android 专题页面 http://www.linuxidc.com/topicnews.aspx?tid=11