1. static String cityName = "深圳"; //城市名
2. publicstaticString cityName ; //城市名
3.
4. privatestaticGeocoder geocoder; //此对象能通过经纬度来获取相应的城市等信息
5.
6.
7. publicstaticvoidgetCNBylocation(Context context){
8.
9. geocoder = newGeocoder(context);
10. //用于获取Location对象，以及其他
11. LocationManager locationManager;
12. String serviceName = Context.LOCATION_SERVICE;
13. //实例化一个LocationManager对象
14. locationManager = (LocationManager)context.getSystemService(serviceName);
15. //provider的类型
16. String provider = LocationManager.NETWORK_PROVIDER;
17.
18. Criteria criteria = newCriteria();
19. criteria.setAccuracy(Criteria.ACCURACY_FINE); //高精度
20. criteria.setAltitudeRequired(false); //不要求海拔
21. criteria.setBearingRequired(false); //不要求方位
22. criteria.setCostAllowed(false); //不允许有话费
23. criteria.setPowerRequirement(Criteria.POWER_LOW); //低功耗
24.
25. //通过最后一次的地理位置来获得Location对象
26. Location location = locationManager.getLastKnownLocation(provider);
27.
28. String queryed_name = updateWithNewLocation(location);
29. if((queryed_name != null) && (0!= queryed_name.length())){
30.
31. cityName = queryed_name;
32. }
33.
34.
35. locationManager.requestLocationUpdates(provider, 30000, 50,
36. locationListener);
37. //移除监听器，在只有一个widget的时候，这个还是适用的
38. locationManager.removeUpdates(locationListener);
39. }
40.
41.
42. privatefinalstaticLocationListener locationListener = newLocationListener() {
43. String tempCityName;
44. publicvoidonLocationChanged(Location location) {
45.
46. tempCityName = updateWithNewLocation(location);
47. if((tempCityName != null) && (tempCityName.length() != 0)){
48.
49. cityName = tempCityName;
50. }
51. }
52.
53. publicvoidonProviderDisabled(String provider) {
54. tempCityName = updateWithNewLocation(null);
55. if((tempCityName != null) && (tempCityName.length() != 0)) {
56.
57. cityName = tempCityName;
58. }
59. }
60.
61. publicvoidonProviderEnabled(String provider) {
62. }
63.
64. publicvoidonStatusChanged(String provider, intstatus, Bundle extras) {
65. }
66. };
67.
68.
69. privatestaticString updateWithNewLocation(Location location) {
70. String mcityName = "";
71. doublelat = 0;
72. doublelng = 0;
73. List<Address> addList = null;
74. if(location != null) {
75. lat = location.getLatitude();
76. lng = location.getLongitude();
77. } else{
78.
79. System.out.println("无法获取地理信息");
80. }
81.
82. try{
83.
84. addList = geocoder.getFromLocation(lat, lng, 1); //解析经纬度
85.
86. } catch(IOException e) {
87. // TODO Auto-generated catch block
88. e.printStackTrace();
89. }
90. if(addList != null&& addList.size() > 0) {
91. for(inti = 0; i < addList.size(); i++) {
92. Address add = addList.get(i);
93. mcityName += add.getLocality();
94. }
95. }
96. if(mcityName.length()!=0){
97.
98. returnmcityName.substring(0, (mcityName.length()-1));
99. } else{
100. returnmcityName;
101. }
102. }
103.
