Android Base Station Location Based on geolocationapi

API address for http://code.google.com/p/gears/wiki/GeolocationAPI

Sending format:

{
"Location ":{
"Latitude": 51.0,
"Longpolling":-0.1,
"Altitude": 30.1,
"Accuracy": 1200.1,
"Altitude_accuracy": 10.1,
"Address ":{
"Street_number": "100 ",
"Street": "amphibian Gateway ",
"Postal_code": "94043 ",
"City": "Mountain View ",
"County": "Mountain View county ",
"Region": "California ",
"Country": "United States of America ",
"Country_code": "us"
}
}
}

Returned format :{
"Location ":{
"Latitude": 51.0,
"Longpolling":-0.1,
"Altitude": 30.1,
"Accuracy": 1200.1,
"Altitude_accuracy": 10.1,
"Address ":{
"Street_number": "100 ",
"Street": "amphibian Gateway ",
"Postal_code": "94043 ",
"City": "Mountain View ",
"County": "Mountain View county ",
"Region": "California ",
"Country": "United States of America ",
"Country_code": "us"
}
}
}

After obtaining the LAC and cellid, the others are parsed in JSON;

</P> <p> Import Java. io. bufferedreader; <br/> Import Java. io. inputstream; <br/> Import Java. io. inputstreamreader; <br/> Import java.net. URL; <br/> Import Java. util. date; </P> <p> Import Org. apache. HTTP. httpentity; <br/> Import Org. apache. HTTP. httpresponse; <br/> Import Org. apache. HTTP. client. methods. httppost; <br/> Import Org. apache. HTTP. entity. stringentity; <br/> Import Org. apache. HTTP. impl. client. defaulthttpc Lient; <br/> Import Org. JSON. jsonarray; <br/> Import Org. JSON. jsonobject; </P> <p> Import android. app. activity; <br/> Import android. content. context; <br/> Import android. OS. bundle; <br/> Import android. telephony. telephonymanager; <br/> Import android. telephony. GSM. gsmcelllocation; <br/> Import android. view. view; <br/> Import android. widget. button; <br/> Import android. widget. textview; </P> <p> public class loca Tionstation extends activity {<br/> textview mtextview; <br/> button mbutton; <br/> telephonymanager TM; </P> <p>/** called when the activity is first created. */<br/> @ override <br/> Public void oncreate (bundle savedinstancestate) {<br/> super. oncreate (savedinstancestate); <br/> setcontentview (R. layout. main); </P> <p> mtextview = (textview) findviewbyid (R. id. textview); <br/> mbutton = (button) findviewbyid (R. id. button); <br/> TM = (telephonymanager) This <br/>. getsystemservice (context. telephony_service); </P> <p> mbutton. setonclicklistener (New button. onclicklistener () {</P> <p> @ override <br/> Public void onclick (view V) {<br/> // todo auto-generated method stub <br/> gsmcelllocation GCL = (gsmcelllocation) TM. getcelllocation (); <br/> int cid = GCL. getcid (); <br/> int LAC = GCL. getlac (); <br/> system. out. prin TLN ("operator" + TM. getnetworkoperator (); // China Mobile 43600 <br/> int MCC = integer. valueof (TM. getnetworkoperator (). substring (0, <br/> 3); <br/> int MNC = integer. valueof (TM. getnetworkoperator (). substring (3, <br/> 5); <br/>/* <br/> * sending format: {<br/> "version": "1.1.0 ", <br/> "host": "maps.google.com", <br/> "access_token": "2: Authorization: 4ixoeopth1glsxe", <br/> "home_mobile_country_code": 460, <br/> "home_mo Bile_network_code ": 0, <br/>" address_language ":" zh_cn ", <br/>" radio_type ":" GSM ", <br/>" request_address ": True, <br/> "cell_towers": [<br/>{< br/> "cell_id": 36526, <br/> "location_area_code": 14556, <br/> "mobile_country_code": 460, <br/> "mobile_network_code": 0, <br/> "timing_advance ": 5555 <br/>}< br/>] <br/>}< br/> */<br/> try {<br/> // assemble a JSON query string <br /> jsonobject holder = new jsonobject (); <br/> holder. Put ("version", "1.1.0"); <br/> holder. put ("host", "maps.google.com"); <br/> holder. put ("address_language", "zh_cn"); <br/> holder. put ("request_address", true); </P> <p> jsonarray array = new jsonarray (); <br/> jsonobject DATA = new jsonobject (); <br/> data. put ("cell_id", CID); // 25070 <br/> data. put ("location_area_code", LAC); // 4474 <br/> data. put ("mobile_country_code", MCC); // 460 <br/> data. put ("Mobile _ Network_code ", MNC); // 0 <br/> array. put (data); <br/> holder. put ("cell_towers", array); </P> <p> // create a connection, send a request, and receive a response <br/> defaulthttpclient client = new defaulthttpclient (); </P> <p> httppost post = new httppost (<br/> "http://www.google.com/loc/json"); </P> <p> stringentity Se = new stringentity (holder. tostring (); </P> <p> post. setentity (SE); <br/> httpresponse resp = client.exe cute (post); </P> <p> httpentity entity = Resp. getentity (); </P> <p> bufferedreader BR = new bufferedreader (<br/> New inputstreamreader (entity. getcontent (); <br/> stringbuffer sb = new stringbuffer (); <br/> string result = BR. readline (); </P> <p> while (result! = NULL) {</P> <p> Sb. append (result); <br/> result = BR. readline (); <br/>}< br/>/* <br/> * return format: {<br/> "location ": {<br/> "latitude": 51.0, <br/> "longpolling":-0.1, <br/> "altitude": 30.1, <br/> "accuracy ": 1200.1, <br/> "altitude_accuracy": 10.1, <br/> "Address": {<br/> "street_number": "100 ", <br/> "street": "amphibian Gateway", <br/> "postal_code": "94043", <br/> "city": "Mountain View ", <br/>" County ":" Mountain View county ", <br/>" region ":" California ", <br/>" country ":" United States of America ", <br/> "country_code ": "Us" <br/>}< br/> */<br/> jsonobject = new jsonobject (sb. tostring (); </P> <p> jsonobject jsonobject1 = new jsonobject (jsonobject <br/>. getstring ("location"); </P> <p> getaddress (jsonobject1.getstring ("latitude"), jsonobject1 <br/>. getstring ("longi Tude "); </P> <p> // mtextview. settext (sb. tostring (); <br/>} catch (exception e) {<br/> // todo: handle exception <br/>}</P> <p> }); <br/>}</P> <p> void getaddress (string Lat, string lag) {<br/> try {</P> <p> URL url = new URL ("http://maps.google.cn/maps/geo? Key = abcdefg & Q = "<br/> + lat +", "+ lag); <br/> inputstream = URL. openconnection (). getinputstream (); <br/> inputstreamreader inputreader = new inputstreamreader (inputstream, <br/> "UTF-8"); <br/> bufferedreader bufreader = new bufferedreader (inputreader ); </P> <p> string line = "", lines = ""; </P> <p> while (line = bufreader. readline ())! = NULL) {<br/> lines + = line; <br/>}< br/> If (! Lines. equals ("") {</P> <p> jsonobject = new jsonobject (lines); <br/> jsonarray = new jsonarray (jsonobject. get ("placemark") <br/>. tostring (); <br/> for (INT I = 0; I <jsonarray. length (); I ++) {</P> <p> mtextview. settext (jsonarray. getjsonobject (I ). getstring ("Address"); </P> <p >}</P> <p >}catch (exception E) {<br/>;< br/>}</P> <p >}< br/>}