Get cell location on a GSM phone, getCellLocation()

TelephonyManager.getCellLocation() return the current location of the device.

We need the following permission in this example:

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

package com.AndroidTelephonyManager;

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 {
  /** 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 textCID = (TextView)findViewById(R.id.cid);
      TextView textLAC = (TextView)findViewById(R.id.lac);
    
      //retrieve a reference to an instance of TelephonyManager
      TelephonyManager telephonyManager = (TelephonyManager)getSystemService(Context.TELEPHONY_SERVICE);
      GsmCellLocation cellLocation = (GsmCellLocation)telephonyManager.getCellLocation();
    
      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));
  }
}

<?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/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"
  />
</LinearLayout>

next:
- Convert cellLocation to real location (Latitude and Longitude)