Android獲取GPS坐標

Android獲取GPS坐標：

1. package an.android.application;
4. import java.util.Iterator;
6. import android.app.Activity;
7. import android.content.Intent;
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;
22. public class SpeedToll extends Activity {
23. /** Called when the activity is first created. */
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;
31. private LocationManager locationManager;
32. private GpsStatus gpsstatus;
35. @Override
36. public void onCreate(Bundle savedInstanceState) {
38. super.onCreate(savedInstanceState);
39. /* 加載main.xml Layout */
40. setContentView(R.layout.desktop);
41. /* 以findViewById()取得Button對象，並加入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一個Intent對象，並指定要啟動的class */
48. Intent intent = new Intent();
49. intent.setClass(SpeedToll.this, Map.class);
50. /* 調用一個新的Activity */
51. startActivity(intent);
52. /* 關閉原本的Activity */
53. //SpeedToll.this.finish();
54. }
55. });
58. Button b2 = (Button) findViewById(R.id.button1);
59. b2.setOnClickListener(new Button.OnClickListener()
60. {
61. public void onClick(View v)
62. {
63. /* new一個Intent對象，並指定要啟動的class */
64. Intent intent = new Intent();
65. intent.setClass(SpeedToll.this, Map.class);
66. /* 調用一個新的Activity */
67. startActivity(intent);
68. /* 關閉原本的Activity */
69. //SpeedToll.this.finish();
70. }
71. });
72. }
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");
81. return true;
82. }//menu
84. public boolean onOptionsItemSelected(MenuItem item)
85. {
86. //super.onOptionsItemSelected(item);
87. switch(item.getItemId()){
88. case Search:
89. //Search();
90. break;
92. case Myloc:
93. GetMyLocation();
94. break;
96. case Exit:
97. //mLocationManager.removeUpdates(this); //關閉GPS
99. this.finish();
100. break;
101. }
102. return super.onOptionsItemSelected(item);
103. }
106. public boolean GetMyLocation(){
107. //獲取到LocationManager對象
108. locationManager = (LocationManager) getSystemService(LOCATION_SERVICE);
110. //根據設置的Criteria對象，獲取最符合此標准的provider對象
111. String currentProvider = locationManager.getProvider(LocationManager.GPS_PROVIDER).getName();
113. //根據當前provider對象獲取最後一次位置信息
114. Location currentLocation = locationManager.getLastKnownLocation(currentProvider);
115. //如果位置信息為null，則請求更新位置信息
116. if(currentLocation == null){
117. locationManager.requestLocationUpdates(currentProvider, 0, 0, locationListener);
118. }
119. //增加GPS狀態監聽器
120. locationManager.addGpsStatusListener(gpsListener);
122. //直到獲得最後一次位置信息為止，如果未獲得最後一次位置信息，則顯示默認經緯度
123. //每隔10秒獲取一次位置信息
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. }
145. private GpsStatus.Listener gpsListener = new GpsStatus.Listener(){
146. //GPS狀態發生變化時觸發
147. @Override
148. public void onGpsStatusChanged(int event) {
149. //獲取當前狀態
150. gpsstatus=locationManager.getGpsStatus(null);
151. switch(event){
152. //第一次定位時的事件
153. case GpsStatus.GPS_EVENT_FIRST_FIX:
154. break;
155. //開始定位的事件
156. case GpsStatus.GPS_EVENT_STARTED:
157. break;
158. //發送GPS衛星狀態事件
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. };
179. //創建位置監聽器
180. private LocationListener locationListener = new LocationListener(){
181. //位置發生改變時調用
182. @Override
183. public void onLocationChanged(Location location) {
184. Log.d("Location", "onLocationChanged");
185. }
187. //provider失效時調用
188. @Override
189. public void onProviderDisabled(String provider) {
190. Log.d("Location", "onProviderDisabled");
191. }
193. //provider啟用時調用
194. @Override
195. public void onProviderEnabled(String provider) {
196. Log.d("Location", "onProviderEnabled");
197. }
199. //狀態改變時調用
200. @Override
201. public void onStatusChanged(String provider, int status, Bundle extras) {
202. Log.d("Location", "onStatusChanged");
203. }
206. };
208. }

主要有兩個文件，一個是主文件，一個是xml文件。

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