Android通過GPS獲得經緯度

真機不行，模擬器可以。手機有問題，先記錄代碼再說。

代碼如下：

AndroidManifest.xml

1. <?xml version="1.0" encoding="utf-8"?>
2. <manifest xmlns:android="http://schemas.android.com/apk/res/android"
3. package="basic.android.lesson26"
4. android:versionCode="1"
5. android:versionName="1.0">
6. <uses-sdk android:minSdkVersion="7"/>
7. <application android:label="@string/app_name">
8. <activity android:name=".TestMyGPS"
9. android:label="@string/app_name">
10. <intent-filter>
11. <action android:name="android.intent.action.MAIN"/>
12. <category android:name="android.intent.category.LAUNCHER"/>
13. </intent-filter>
14. </activity>
15. </application>
17. <!-- 粗略定位授權 -->
18. <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
19. <!-- 精細定位授權 -->
20. <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
21. </manifest>

1. <?xml version="1.0" encoding="utf-8"?>
2. <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
3. android:orientation="vertical"
4. android:layout_width="fill_parent"
5. android:layout_height="fill_parent"
6. >
7. <Button android:id="@+id/button1"
8. android:layout_width="fill_parent"
9. android:layout_height="wrap_content"
10. android:text="ok"/>
11. <TextView android:id="@+id/textView1"
12. android:layout_width="fill_parent"
13. android:layout_height="wrap_content"
14. android:text="Hello World, MainActivity"
15. />
16. <TextView android:id="@+id/show_status"
17. android:layout_width="fill_parent"
18. android:layout_height="wrap_content"
19. android:text="init"/>
21. <TextView android:id="@+id/temp_text"
22. android:layout_width="fill_parent"
23. android:layout_height="wrap_content"
24. android:text="臨時"/>
25. </LinearLayout>

1. package basic.android.lesson26;
3. import android.app.Activity;
4. import android.content.Context;
5. import android.content.Intent;
6. import android.location.Criteria;
7. import android.location.Location;
8. import android.location.LocationListener;
9. import android.location.LocationManager;
10. import android.os.Bundle;
11. import android.provider.Settings;
12. import android.util.Log;
13. import android.view.View;
14. import android.widget.Button;
15. import android.widget.TextView;
16. import android.widget.Toast;
18. public class TestMyGPS extends Activity {
20. private static final String TAG = "TestMyGPS";
21. Button mButton;
22. TextView tv1;
23. TextView mStatus;
24. TextView mTemp;
25. LocationManager mlm;
26. LocationListener locationListener;
27. String mFilter;
29. @Override
30. public void onCreate(Bundle savedInstanceState) {
31. super.onCreate(savedInstanceState);
32. setContentView(R.layout.main);
34. // 定義UI組件
35. mButton = (Button) findViewById(R.id.button1);
36. tv1 = (TextView) findViewById(R.id.textView1);
37. mStatus = (TextView) findViewById(R.id.show_status);
38. mTemp = (TextView) findViewById(R.id.temp_text);
41. mButton.setOnClickListener(new View.OnClickListener() {
42. public void onClick(android.view.View view) {
43. // 轉至 GPS 設置界面
44. Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
45. startActivityForResult(intent, 0);
46. }
47. });
48. // 獲取LocationManager對象
49. mlm = (LocationManager) this.getSystemService(Context.LOCATION_SERVICE);
51. // 定義Criteria對象
53. // 獲取GPS信息提供者
54. Criteria filter = getFilter();
55. mFilter = mlm.getBestProvider(filter, true);
57. // try {
58. // mlm.setTestProviderEnabled(mFilter, true);
59. // } catch (IllegalArgumentException e) {
60. // String err = "IllegalArgumentException=" + e.getMessage();
61. // Log.e(TAG, err);
62. // Toast.makeText(this, err, Toast.LENGTH_LONG).show();
63. // }
64. // openGPS();
65. gpsStatus();
66. // 位置監聽器
67. locationListener = new LocationListener() {
69. // 當位置改變時觸發
70. public void onLocationChanged(Location location) {
71. updateLocation(location);
72. Toast.makeText(TestMyGPS.this, "onLocationChanged=" + location, Toast.LENGTH_LONG).show();
73. gpsStatus();
74. mTemp.setText("onLocationChanged="+location);
75. }
77. // Provider失效時觸發
78. public void onProviderDisabled(String arg0) {
79. gpsStatus();
80. mTemp.setText("onProviderDisabled=" + arg0);
81. }
83. // Provider可用時觸發
84. public void onProviderEnabled(String arg0) {
85. gpsStatus();
86. mTemp.setText("onProviderEnabled=" + arg0);
87. }
89. // Provider狀態改變時觸發
90. public void onStatusChanged(String arg0, int arg1, Bundle arg2) {
91. mTemp.setText("onStatusChanged=" + arg0);
92. }
93. };
95. // 500毫秒更新一次，忽略位置變化
96. mlm.requestLocationUpdates(LocationManager.GPS_PROVIDER, 500, 3, locationListener);
98. }
101. private void openGPS() {
102. // if (mlm.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
103. // Toast.makeText(this, " 位置源已設置！ ", Toast.LENGTH_SHORT).show();
104. // return;
105. // }
106. //
107. // Toast.makeText(this, " 位置源未設置！ ", Toast.LENGTH_SHORT).show();
108. }
110. private Criteria getFilter() {
111. Criteria criteria = new Criteria();
112. // 設置定位精確度 Criteria.ACCURACY_COARSE 比較粗略， Criteria.ACCURACY_FINE則比較精細
113. criteria.setAccuracy(Criteria.ACCURACY_FINE);
114. // 設置是否需要海拔信息 Altitude
115. criteria.setAltitudeRequired(false);
116. // 設置是否需要方位信息 Bearing
117. criteria.setBearingRequired(false);
118. // 設置是否允許運營商收費
119. criteria.setCostAllowed(true);
120. // 設置對電源的需求
121. criteria.setPowerRequirement(Criteria.POWER_LOW);
122. return criteria;
123. }
125. private void gpsStatus() {
126. if (mlm.isProviderEnabled(LocationManager.GPS_PROVIDER)) {
127. mStatus.setText("GPS開啟");
128. } else {
129. mStatus.setText("GPS未開啟");
130. Toast.makeText(this, " 位置源未設置！ ", Toast.LENGTH_SHORT).show();
131. // 轉至 GPS 設置界面
132. Intent intent = new Intent(Settings.ACTION_SECURITY_SETTINGS);
133. startActivityForResult(intent, 0);
134. }
135. }
137. // 更新位置信息
138. private void updateLocation(Location location) {
139. if (location != null) {
140. tv1.setText("更新位置：" + location.toString() + "\n\t其中經度：" + location.getLongitude() + "\n\t其中緯度："
141. + location.getLatitude());
142. } else {
143. tv1.setText("更新位置失敗");
144. }
145. }
147. @Override
148. protected void onDestroy() {
149. mlm.removeUpdates(locationListener);
150. // mlm.setTestProviderEnabled(mFilter, false);
151. super.onDestroy();
152. }
153. }