通过SIM卡获取GPS，android基站定位原理

TelephonyManager telManager=(TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
GsmCellLocation glc=(GsmCellLocation) telManager.getCellLocation();
int cid=glc.getCid();///gsm cell id, -1 if unknown, 0xffff max legal value 基站ID号
int lac=glc.getLac();//写入区域代码
String strOperator=telManager.getNetworkOperator();

int mcc=Integer.valueOf(strOperator.substring(0, 3));//写入当前城市代码
int mnc=Integer.valueOf(strOperator.substring(3, 5));//写入网络代码
String getNumber="";
getNumber+=("cid:"+cid+"\n");
getNumber+=("cid:"+lac+"\n");
getNumber+=("cid:"+mcc+"\n");
getNumber+=("cid:"+mnc+"\n");

try {
JSONObject jObject=new JSONObject();
jObject.put("version", "1.1.0");
jObject.put("host", "maps.google.com");
jObject.put("request_address", true);
if(mcc==460)
jObject.put("address_language","zh_CN");
else
jObject.put("address_language", "en_US");

JSONArray jArray=new JSONArray();
JSONObject jData=new JSONObject();
jData.put("cell_id", cid);
jData.put("location_area_code", lac);
jData.put("mobile_country_code", mcc);
jData.put("mobile_network_code", mnc);//
jArray.put(jData);
jObject.put("cell_towers",jArray);
DefaultHttpClient client=new DefaultHttpClient();
HttpPost post=new HttpPost("http://www.google.com/loc/json");
StringEntity se=new StringEntity(jObject.toString());
post.setEntity(se);

HttpResponse resp=client.execute(post);
BufferedReader br=null;
if(resp.getStatusLine().getStatusCode()==HttpStatus.SC_OK){
br=new BufferedReader(new InputStreamReader(resp.getEntity().getContent()));
StringBuffer sb=new StringBuffer();

String result=br.readLine();
while(result!=null)
{
sb.append(getNumber);
sb.append(result);
result=br.readLine();
}

String s=sb.toString();
s=s.substring(s.indexOf("{"));
btn.setText(s);
JSONObject jo=new JSONObject(s);

String values="";
JSONObject arr= jo.getJSONObject("location");
String lat= arr.get("latitude").toString();
String lon=arr.getString("longitude").toString();

Toast.makeText(getApplicationContext(), "经度："+lon+" 纬度:"+lat,1).show();

}
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ClientProtocolException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

最后还要加入网络访问权限
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"></uses-permission>