title: java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() getting runtime error in android
body: <p>Getting this <code>RuntimeException</code> in android :</p>
  
  <blockquote>
    <p>java.lang.RuntimeException: Can't create handler inside thread that
    has not called Looper.prepare() getting run time error at
    Toast.makeText(this, latitude+""+longitude, 1).show();</p>
  </blockquote>
  
  <p>in function <code>updateLocation()</code>.</p>
  
  <pre><code>public class Location_update extends Service {
  
   double latitude;
   double longitude;
   GPSLocation gps;
   boolean state=true;
  @Override
  public IBinder onBind(Intent intent) {
      // TODO Auto-generated method stub
      return null;
  }
  
  @Override
  public void onCreate() {
      // TODO Auto-generated method stub
      super.onCreate();
      Timer timer = new Timer();
      timer.schedule(task, 0,1000*30);
  
  }
  
  TimerTask task=new TimerTask() {
  
      @Override
      public void run() {
          // TODO Auto-generated method stub
       updateLocation();
      }
  };
  
  
  
  public void updateLocation()
  {
      gps = new GPSLocation(MainActivity.dis);
  
      // check if GPS enabled     
      if(gps.canGetLocation()){
          latitude = gps.getLatitude();
          longitude = gps.getLongitude();
          try
          {
       Toast.makeText(this, latitude+""+longitude, 1).show(); 
          }
          catch(Exception e)
          {
              Log.d("error", "msg:-- "+e);
          }
          // \n is for new line
          //Toast.makeText(Location_update.this, "Your Location is - \nLat: " + latitude + "\nLong: " + longitude, Toast.LENGTH_LONG).show();    
      }else{
          // can't get location
          // GPS or Network is not enabled
          // Ask user to enable GPS/network in settings
          gps.showSettingsAlert();
      }
  
      if(gps.getLatitude()!=0.0 &amp;&amp; gps.getLongitude()!=0.0)
      {
      try {
  
              String url = "http://surajsingh.freetzi.com/insert_longi_latti.php?latti="+latitude+"&amp;longi="+longitude;
              HttpGet get = new HttpGet(url);
              DefaultHttpClient httpClient = new DefaultHttpClient();
              HttpResponse httpResponse = httpClient.execute(get);
              HttpEntity httpEntity = httpResponse.getEntity();
              String data = EntityUtils.toString(httpEntity);
              JSONObject obj = new JSONObject(data);
              int status = obj.getInt("status");
              }
           catch (Exception e) {
              // TODO: handle exception
              // Toast.makeText(Location_update.this, ""+e, 1).show();
               Log.d("error", ""+e);
          }
  
      }
  }
  
  
  }
  </code></pre>