Android obtains the geographic location through the base station

/**

* Obtain Base Station Information * @ Return * @ Throws exception */ Public scell getcellinfo () throws exception { Scell cell = new scell (); Telephonymanager mtelnet = (telephonymanager) getsystemservice (context. telephony_service ); Gsmcelllocation location = (gsmcelllocation) mtelnet. getcelllocation (); If (location = NULL) Throw new exception ("the base station information is empty "); String operator = mtelnet. getnetworkoperator (); Int MCC = integer. parseint (operator. substring (0, 3 )); Int MNC = integer. parseint (operator. substring (3 )); Int cid = location. getcid (); Int LAC = location. getlac (); Cell. MCC = MCC; Cell. MNC = MNC; Cell. LAC = LAC; Cell. cid = CID; Return cell; }
/** * Obtain the longitude and latitude through the base station information * @ Param Cell * @ Return * @ Throws exception */ Private situde getitude (scell cell) throws exception { S00000000= new s0000 ();
Httpclient client = new defaulthttpclient (); Httppost post = new httppost ("http://www.google.com/loc/json "); Try { Jsonobject holder = new jsonobject (); Holder. Put ("version", "1.1.0 "); Holder. Put ("host", "maps.google.com "); Holder. Put ("address_language", "zh_cn "); Holder. Put ("request_address", true ); Holder. Put ("radio_type", "GSM "); Holder. Put ("carrier", "HTC ");
Jsonobject Tower = new jsonobject (); Tower. Put ("mobile_country_code", cell. MCC ); Tower. Put ("mobile_network_code", cell. MNC ); Tower. Put ("cell_id", cell. CID ); Tower. Put ("location_area_code", cell. LAC );
Jsonarray towerarray = new jsonarray (); Towerarray. Put (Tower ); Holder. Put ("cell_towers", towerarray );
Stringentity query = new stringentity (holder. tostring ()); Post. setentity (query );
Httpresponse response = client.exe cute (post ); Httpentity entity = response. getentity (); Bufferedreader buffreader = new bufferedreader ( New inputstreamreader (entity. getcontent ())); Stringbuffer strbuff = new stringbuffer (); String result = NULL; While (result = buffreader. Readline ())! = NULL ){ Strbuff. append (result ); } Jsonobject JSON = new jsonobject (strbuff. tostring ()); Jsonobject subjosn = new jsonobject (JSON. getstring ("location "));
Longitude. Latitude = subjosn. getstring ("latitude "); Response. longpolling = subjosn. getstring ("longpolling ");
Log. I ("longitude", longitude. Latitude + longitude. longpolling );
} Catch (exception e ){ Log. E (E. getmessage (), E. tostring ()); Throw new exception ("" + E. getmessage ()); } Finally { Post. Abort (); Client = NULL; }
Return response; }
/** * Obtain the geographical location through the latitude and longitude to Google Map * @ Param listener * @ Return * @ Throws exception */ Private string getlocation (swritable rows) throws exception { String resultstring = ""; String urlstring = string. Format ( "Http://maps.google.cn/maps/geo? Key = abcdefg & Q = % s, % s ", Longitude. latitude, longitude. longpolling ); Log. I ("url", urlstring ); Httpclient client = new defaulthttpclient (); Httpget = new httpget (urlstring ); Try { Httpresponse response = client.exe cute (get ); Httpentity entity = response. getentity (); Bufferedreader buffreader = new bufferedreader ( New inputstreamreader (entity. getcontent ())); Stringbuffer strbuff = new stringbuffer (); String result = NULL; While (result = buffreader. Readline ())! = NULL ){ Strbuff. append (result ); } Resultstring = strbuff. tostring (); If (resultstring! = NULL & resultstring. Length ()> 0 ){ Jsonobject = new jsonobject (resultstring ); Jsonarray = new jsonarray (jsonobject. Get ("placemark ") . Tostring ()); Resultstring = ""; For (INT I = 0; I <jsonarray. Length (); I ++ ){ Resultstring = jsonarray. getjsonobject (I). getstring ( "Address "); } } } Catch (exception e ){ Throw new exception ("SD:" + E. getmessage ()); } Finally { Get. Abort (); Client = NULL; } Return resultstring; }
Public class scell { Public int MCC; Public int MNC; Public int LAC; Public int CID; }
Public class s0000 { Public String latitude; Public String longpolling; }