Android : Samsung Galaxy Tabs and Android 2.2 Devices Showing GPs date 1 Day Advance from 1st jan 2012

I have the Galaxy tab GT-P1000 7 inch with firmware version:2.3.3 and Phones running Android 2.2 . In both versions when ever I am trying to get the Time From Gps, Its showing 1 day advance from 1st jan 2012. Same code is working fine on samsung,LG and Motorola Phones.

The Sample code for the App is,

package com.vxceed.dateTime;





import java.util.Calendar;



import android.app.Activity;

import android.content.Context;

import android.location.Location;

import android.location.LocationListener;

import android.location.LocationManager;

import android.os.Bundle;

import android.view.View;

import android.widget.TextView;

import android.widget.Toast;



public class SampleDateTimeActivity extends Activity {



    private LocationManager locationManager;

    private  TextView tv;

    String varTime="";



    /**

     * Location Listener 

     */

    LocationListener locationListener = new LocationListener() {



        @Override

        public void onStatusChanged(String provider, int status, Bundle extras) {



        }



        @Override

        public void onProviderEnabled(String provider) {

            locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);

        }



        @Override

        public void onProviderDisabled(String provider) {

            Toast.makeText(SampleDateTimeActivity.this,"GPS off", Toast.LENGTH_SHORT).show();

        }



        @Override

        public void onLocationChanged(Location location) {

            setCurrentLocation(location);



        }

    };







    private void setCurrentLocation(Location location) {



          varTime=String.valueOf(location.getTime());



    }





    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        locationManager=(LocationManager) this.getSystemService(Context.LOCATION_SERVICE);

        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0,0, locationListener);



         tv=(TextView)findViewById(R.id.textView1);



    }





     public void refreshTime(View v)

     {

        String currentGPSTime="";

        currentGPSTime=varTime;

        if(currentGPSTime.compareTo("")==0)

        {

            tv.setText("Time Not Available");

        }

        else

        {

            Calendar cal=Calendar.getInstance();

            cal.setTimeInMillis(new Long(currentGPSTime));



            long currentDeviceTime=Calendar.getInstance().getTimeInMillis();



            Calendar cal2=Calendar.getInstance();

            cal2.set(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DATE)-1,cal.get(Calendar.HOUR_OF_DAY),cal.get(Calendar.MINUTE));

            long currentGPSTime_less_one_Day=cal2.getTimeInMillis();



            tv.setText( "GPSTIME:"+cal.getTime().toString() +" \n GPS_TIME_in_Millis:"+varTime+"\nDevice_Time_in_millis:"+String.valueOf(currentDeviceTime) +"\nGPS Time -1 day:"+String.valueOf(currentGPSTime_less_one_Day));

        }

     }





    @Override

    protected void onDestroy() {

        // TODO Auto-generated method stub

        super.onDestroy();

        if (locationManager != null && locationListener != null){

            locationManager.removeUpdates(locationListener);

            locationManager = null;

        }

    }





}

I have searched the Google and then referring the NMEA official document I figure out How to Use the NMEA data Here is the Working Code for the NMEA listener

NmeaListener nmeaListener = new NmeaListener() {

@Override

    public void onNmeaReceived(long timestamp, String nmea) {



        parse(nmea);

    }

};





private boolean parse(String strNMEA) {



    // Discard the sentence if its checksum does not match our calculated

    // checksum

    boolean bStatus = false;

    try {

        if (!IsValid(strNMEA)) {



            return false;

        }

        String[] sArrNMEA = strNMEA.split(",");

        String strNMEAType = sArrNMEA[0];

        if (strNMEAType.equals("$GPRMC")) {



            bStatus = ParseGPRMC(sArrNMEA);

        } else {



            bStatus = false;

        }



        sArrNMEA = null;

    } catch (Exception e) {



    }

    return bStatus;



}



private boolean ParseGPRMC(String[] sArrNMEA) {



    boolean result = false;

    try {

        if (sArrNMEA.length > 9) {

            int Hr = 0;

            int Mins = 0;

            int Secs = 0;



            if (!sArrNMEA[1].equals("")) {



                Hr = Integer.parseInt(sArrNMEA[1].substring(0, 2));

                Mins = Integer.parseInt(sArrNMEA[1].substring(2, 4));



                if (sArrNMEA[1].length() > 6) {



                    Secs = Integer.parseInt(sArrNMEA[1].substring(4, 6));

                } else {

                    Secs = Integer.parseInt(sArrNMEA[1].substring(4));

                }



            }

            if (!sArrNMEA[9].equals("")) {

                int Day = Integer.parseInt(sArrNMEA[9].substring(0, 2));

                int Month = Integer.parseInt(sArrNMEA[9].substring(2, 4));

                if (Month > 0) {

                    Month = Month - 1;

                }

                int Year = Integer.parseInt(sArrNMEA[9].substring(4));

                Year = 2000 + Year;



                if (!sArrNMEA[1].equals("")) {



                    Calendar cal = Calendar.getInstance(TimeZone

                            .getTimeZone("UTC"));

                    cal.set(Year, Month, Day, Hr, Mins, Secs);



                    nmeaTime = String.valueOf(cal.getTimeInMillis());



                }



            }







            result = true;

        }

    } catch (Exception e) {



    }



    return result;



}



    private boolean IsValid(String strNMEA) {

    // Compare the characters after the asterisk to the calculation

    strNMEA = strNMEA.replace("\r", "");

    strNMEA = strNMEA.replace("\n", "");

    return strNMEA.substring(0, strNMEA.length())

            .substring(strNMEA.indexOf("*") + 1)

            .equalsIgnoreCase(GetChecksum(strNMEA));

}

Source: Tips4all
Source: Tips4allSource: CCNA FINAL EXAM