Android GSM+CDMA基站定位

在googleAPI裡提供了基站信息的獲取類TelephonyManager，通過其方法getCellLocation得到CellLocation即可獲取到基站相關信息

但CellLocation是個抽象類，所以在具體使用時需要判斷接入的網絡制式來用其子類CdmaCellLocation或GsmCellLocation 來強轉

CdmaCellLocation對應CDMA網，GsmCellLocation對應GSM網

三大網絡運營商的網絡制式對應如下：

移動2G 網 --> GSM

移動3G 網 --> TD-SCDMA

電信2G 網 --> CDMA

電信3G 網 --> CDMA2000

聯通2G 網 --> GSM

聯通3G 網 --> WCDMA

由此可見移動，聯通2G 網都可使用GsmCellLocation

電信2G,3G網則使用CdmaCellLocation

那麼移動3G和聯通3G又當如何

其實經本人親測，移動3G網也可使用GsmCellLocation，聽說是TD-SCDMA衍生於GSM，具體原因咱也不用糾結了，反正能用就是了

而聯通的WCDMA據說也可使用GsmCellLocation，那姑且就是這樣吧，有條件的童鞋試一試吧。

對於網絡制式的判斷調用TelephonyManager.getNetworkType()可有多種情況，如下：

• NETWORK_TYPE_UNKNOWN
• NETWORK_TYPE_GPRS
• NETWORK_TYPE_EDGE
• NETWORK_TYPE_UMTS
• NETWORK_TYPE_HSDPA
• NETWORK_TYPE_HSUPA
• NETWORK_TYPE_HSPA
• NETWORK_TYPE_CDMA
• NETWORK_TYPE_EVDO_0
• NETWORK_TYPE_EVDO_A
• NETWORK_TYPE_EVDO_B
• NETWORK_TYPE_1xRTT
• NETWORK_TYPE_IDEN
• NETWORK_TYPE_LTE
• NETWORK_TYPE_EHRPD

通過對網絡類型判斷後獲取對應基站信息代碼片段如下:

1. public static ArrayList<CellIDInfo> getCellIDInfo(Context context) throws Exception{
3. TelephonyManager manager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);
5. ArrayList<CellIDInfo> CellID = new ArrayList<CellIDInfo>();
6. CellIDInfo currentCell = new CellIDInfo();
8. int type = manager.getNetworkType();
9. Log.d(TAG, "getCellIDInfo--> NetworkType = " + type);
10. int phoneType = manager.getPhoneType();
11. Log.d(TAG, "getCellIDInfo--> phoneType = " + phoneType);
13. if (type == TelephonyManager.NETWORK_TYPE_GPRS // GSM網
14. || type == TelephonyManager.NETWORK_TYPE_EDGE
15. || type == TelephonyManager.NETWORK_TYPE_HSDPA)
16. {
17. GsmCellLocation gsm = ((GsmCellLocation) manager.getCellLocation());
18. if (gsm == null)
19. {
20. Log.e(TAG, "GsmCellLocation is null!!!");
21. return null;
22. }
25. int lac = gsm.getLac();
26. String mcc = manager.getNetworkOperator().substring(0, 3);
27. String mnc = manager.getNetworkOperator().substring(3, 5);
28. int cid = gsm.getCid();
30. currentCell.cellId = gsm.getCid();
31. currentCell.mobileCountryCode = mcc;
32. currentCell.mobileNetworkCode = mnc;
33. currentCell.locationAreaCode = lac;
35. currentCell.radioType = "gsm";
37. CellID.add(currentCell);
39. // 獲得鄰近基站信息
40. List<NeighboringCellInfo> list = manager.getNeighboringCellInfo();
41. int size = list.size();
42. for (int i = 0; i < size; i++) {
44. CellIDInfo info = new CellIDInfo();
45. info.cellId = list.get(i).getCid();
46. info.mobileCountryCode = mcc;
47. info.mobileNetworkCode = mnc;
48. info.locationAreaCode = lac;
50. CellID.add(info);
51. }
53. }else if (type == TelephonyManager.NETWORK_TYPE_CDMA // 電信cdma網
54. || type == TelephonyManager.NETWORK_TYPE_1xRTT
55. || type == TelephonyManager.NETWORK_TYPE_EVDO_0
56. || type == TelephonyManager.NETWORK_TYPE_EVDO_A)
57. {
59. CdmaCellLocation cdma = (CdmaCellLocation) manager.getCellLocation();
60. if (cdma == null)
61. {
62. Log.e(TAG, "CdmaCellLocation is null!!!");
63. return null;
64. }
66. int lac = cdma.getNetworkId();
67. String mcc = manager.getNetworkOperator().substring(0, 3);
68. String mnc = String.valueOf(cdma.getSystemId());
69. int cid = cdma.getBaseStationId();
71. currentCell.cellId = cid;
72. currentCell.mobileCountryCode = mcc;
73. currentCell.mobileNetworkCode = mnc;
74. currentCell.locationAreaCode = lac;
76. currentCell.radioType = "cdma";
78. CellID.add(currentCell);
80. // 獲得鄰近基站信息
81. List<NeighboringCellInfo> list = manager.getNeighboringCellInfo();
82. int size = list.size();
83. for (int i = 0; i < size; i++) {
85. CellIDInfo info = new CellIDInfo();
86. info.cellId = list.get(i).getCid();
87. info.mobileCountryCode = mcc;
88. info.mobileNetworkCode = mnc;
89. info.locationAreaCode = lac;
91. CellID.add(info);
92. }
93. }
95. return CellID;
97. }

從GOOGLE的API文檔裡總共有14鐘網絡類型，這裡只羅列了其中7種，其他的主要是本人也不太清楚其對應到的網絡制式是怎樣的