Locator.java :  » Location » android-bots » android » bots » Android Open Source

/**
 *  This program is free software; you can redistribute it and/or modify it under 
 *  the terms of the GNU General Public License as published by the Free Software 
 *  Foundation; either version 3 of the License, or (at your option) any later 
 *  version.
 *  You should have received a copy of the GNU General Public License along with 
 *  this program; if not, see <http://www.gnu.org/licenses/>. 
 *  Use this application at your own risk.
 *
 *  Copyright (c) 2010 by Chamika Weerasinghe.
 *  AndroidBots
 *  
 */

package android.bots;


import java.util.Timer;
import java.util.TimerTask;

import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.telephony.TelephonyManager;
import android.telephony.gsm.GsmCellLocation;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Catches the cellID with separate Thread
 * @author Chamika
 *
 */
public class Locator extends Main implements Runnable{
  
  private TextView Status;
  private EditText Location;
//  private Thread thread;
  String LocationString;
  private Timer timer;
  private final int LOCATION_UPDATE_INTERVAL = 1000;
  
  /** Called when the activity is first created. */
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    // TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    setContentView(R.layout.locator);
    
    Status=(TextView)findViewById(R.id.TextView_Status);
    Location=(EditText)findViewById(R.id.EditText_LocationName);
    
    Button buttonLocatorStart=(Button)findViewById(R.id.Button_StartSearch);
    Button buttonLocatorStop=(Button) findViewById(R.id.Button_StopSearch);
    
    
    buttonLocatorStart.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {  // onClick Method
          btnLocatorStart(v);
        }});
    
    buttonLocatorStop.setOnClickListener(new OnClickListener() {
        @Override
        public void onClick(View v) {  // onClick Method
          btnLocatorStop(v);
        }});
    
    timer=new Timer();
  }
  
  /**
   * Setup the options menu
   */
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    super.onCreateOptionsMenu(menu);
    getMenuInflater().inflate(R.menu.helpmenu, menu);
    menu.findItem(R.id.item_Help).setIntent(new Intent(this, HelpActivity.class));     
    return true;
  }
  
  /**
   * set shared preferences for help activity and execute it
   */
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    // TODO Auto-generated method stub
    super.onOptionsItemSelected(item);
    
    SharedPreferences settings = getSharedPreferences(PREFS_NAME, 0);
      SharedPreferences.Editor editor = settings.edit();
      
      editor.putString("help", "locator");
      editor.commit();
      
    startActivity(item.getIntent());
    return true;
  }


  
  /**
   * Scan button onClick() method
   * @param v Layout View
   */
  public void btnLocatorStart(View v){
    LocationString= Location.getText().toString();
    
//    thread = new Thread(this);  //Old method
//    thread.start();  
    
    timer.scheduleAtFixedRate(new RunningLocator(this) , 0, LOCATION_UPDATE_INTERVAL);
  }
  
  @Override
  protected void onDestroy() {
    // TODO Auto-generated method stub
    super.onDestroy();
    super.buildLocations();
    super.buildLocationArray();
  }

  /**
   * Stop scan button onClick() method
   * @param v Layout View
   */
  public void btnLocatorStop(View v){
//    thread.stop(); //Old method
    
    if (timer != null) {
      timer.cancel();
      Toast.makeText(this, "Location finding Stopped", Toast.LENGTH_LONG).show();
    }
    
    Status.setText("Stopped");
  }

  /**
   * perform Locator thread
   * will be neglected after testing
   */
  @Override
  public void run() {
    // TODO Auto-generated method stub
    
    //Messages are used for sending Thread event to the foreground activity
    Message ms=new Message();
      
    //Access telephone manager in the device
    TelephonyManager tm  = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE); 
      GsmCellLocation location = (GsmCellLocation) tm.getCellLocation();
        int cellid=location.getCid();
        
    ms.arg2=cellid;
    
        if(addID(cellid, LocationString)){
          ms.arg1=1;
        }
        else{
          ms.arg1=0;
        }
    
    handler.sendMessage(ms);
    
    
  }
  
  //Handler use to take the action when the message received
  Handler handler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      Status.setText("Started to add " + Location.getText().toString() + "cell ids");
      if(msg.arg1 == 1){
        Status.setText("Added cellid " + msg.arg2 + " as " + LocationString);
      }
      else if(msg.arg1==0){
        Status.setText("Cellid " + msg.arg2 + " is already added.");
      }
    }
  };
  

}

/**
 * TimerTask for perform cellID catching and passing them to UI
 * @author Chamika
 *
 */
class RunningLocator extends TimerTask {

  Locator locator;
  GsmCellLocation location;
  
  /**
   * Constructor
   * @param loc Locator UI
   */
  public RunningLocator(Locator loc){
    locator=loc;
    TelephonyManager tm  = (TelephonyManager) locator.getSystemService(Context.TELEPHONY_SERVICE); 
      location = (GsmCellLocation) tm.getCellLocation();
  }
  
  /** Will be called when TimerTask starts */
  @Override
  public void run() {
    // TODO Auto-generated method stub
    
    //Messages are used for sending Thread event to the foreground activity
    Message ms=new Message();
      
    //Access telephone manager in the device
    
        int cellid=location.getCid();
        
    ms.arg2=cellid;
    
        if(locator.addID(cellid, locator.LocationString)){
          ms.arg1=1;
          Log.d("Loc thread", "Location added to list");
        }
        else{
          ms.arg1=0;
        }
    
    locator.handler.sendMessage(ms);
    
  }

}