Get location of Cell ID, from opencellid.org using HttpGet().

A class OpenCellID was created to handle the http communication with opencellid.org. To simplify the job, request with "fmt=txt" is sent, such that we can simply splite the result to retrieve our latitude, longitude.

To know more about the project OpenCellID, refer to last post.



We need the following permission in this example:

• android.permission.ACCESS_COARSE_LOCATION
• android.permission.ACCESS_FINE_LOCATION
• android.permission.READ_PHONE_STATE
• android.permission.INTERNET

package com.AndroidTelephonyManager;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.util.EntityUtils;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.widget.TextView;

public class AndroidTelephonyManager extends Activity {

 public class OpenCellID {
  String mcc;  //Mobile Country Code
  String mnc;  //mobile network code
  String cellid; //Cell ID
  String lac;  //Location Area Code
  
  Boolean error;
  String strURLSent;
  String GetOpenCellID_fullresult;
  
  String latitude;
  String longitude;
  
  public Boolean isError(){
   return error;
  }
  
  public void setMcc(String value){
   mcc = value;
  }
  
  public void setMnc(String value){
   mnc = value;
  }
  
  public void setCallID(int value){
   cellid = String.valueOf(value);
  }
  
  public void setCallLac(int value){
   lac = String.valueOf(value);
  }
  
  public String getLocation(){
   return(latitude + " : " + longitude);
  }
  
  public void groupURLSent(){
   strURLSent =
    "http://www.opencellid.org/cell/get?mcc=" + mcc
    +"&mnc=" + mnc
    +"&cellid=" + cellid
    +"&lac=" + lac
    +"&fmt=txt";
  }
  
  public String getstrURLSent(){
   return strURLSent;
  }
  
  public String getGetOpenCellID_fullresult(){
   return GetOpenCellID_fullresult;
  }
  
  public void GetOpenCellID() throws Exception {
   groupURLSent();
   HttpClient client = new DefaultHttpClient();
   HttpGet request = new HttpGet(strURLSent);
   HttpResponse response = client.execute(request);
   GetOpenCellID_fullresult = EntityUtils.toString(response.getEntity()); 
   spliteResult();
  }
  
  private void spliteResult(){
   if(GetOpenCellID_fullresult.equalsIgnoreCase("err")){
    error = true;
   }else{
    error = false;
    String[] tResult = GetOpenCellID_fullresult.split(",");
    latitude = tResult[0];
    longitude = tResult[1];
   }
    
   
  }
 }

 int myLatitude, myLongitude;
 OpenCellID openCellID;

 
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       TextView textGsmCellLocation = (TextView)findViewById(R.id.gsmcelllocation);
       TextView textMCC = (TextView)findViewById(R.id.mcc);
       TextView textMNC = (TextView)findViewById(R.id.mnc);
       TextView textCID = (TextView)findViewById(R.id.cid);
       TextView textLAC = (TextView)findViewById(R.id.lac);
       TextView textGeo = (TextView)findViewById(R.id.geo);
       TextView textRemark = (TextView)findViewById(R.id.remark);
      
       //retrieve a reference to an instance of TelephonyManager
       TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
       GsmCellLocation cellLocation = (GsmCellLocation)telephonyManager.getCellLocation();
      
       String networkOperator = telephonyManager.getNetworkOperator();
       String mcc = networkOperator.substring(0, 3);
       String mnc = networkOperator.substring(3);
       textMCC.setText("mcc: " + mcc);
       textMNC.setText("mnc: " + mnc);
      
       int cid = cellLocation.getCid();
       int lac = cellLocation.getLac();
       textGsmCellLocation.setText(cellLocation.toString());
       textCID.setText("gsm cell id: " + String.valueOf(cid));
       textLAC.setText("gsm location area code: " + String.valueOf(lac));
      
       openCellID = new OpenCellID();
      
       openCellID.setMcc(mcc);
       openCellID.setMnc(mnc);
       openCellID.setCallID(cid);
       openCellID.setCallLac(lac);
       try {
   openCellID.GetOpenCellID();
   
   if(!openCellID.isError()){
    textGeo.setText(openCellID.getLocation());
    textRemark.setText( "\n\n"
      + "URL sent: \n" + openCellID.getstrURLSent() + "\n\n"
      + "response: \n" + openCellID.GetOpenCellID_fullresult);
   }else{
    textGeo.setText("Error");
   }
  } catch (Exception e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   textGeo.setText("Exception: " + e.toString());
  }
   }   
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   >
<TextView 
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
<TextView 
   android:id="@+id/gsmcelllocation"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/mcc"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/mnc"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/cid"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/lac"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/geo"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
<TextView 
   android:id="@+id/remark"
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   />
</LinearLayout>

Related Post:
- OpenCellID
- Convert cellLocation to real location (Latitude and Longitude), from "http://www.google.com/glm/mmap"
- Start Google Maps using intent of ACTION_VIEW

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