Date picker android

Button toDate = (Button) findViewById(R.id.doc_dateto);
toDate.setOnClickListener(new OnClickListener() {

private int month;
private int year;
private int day;

@Override
public void onClick(View v) {

OnDateSetListener datePickerListener = null;

datePickerListener = new DatePickerDialog.OnDateSetListener() {



public void onDateSet(DatePicker view,
int selectedYear, int selectedMonth,
int selectedDay) {
year = selectedYear;
month = selectedMonth;
day = selectedDay;

Calendar c = Calendar.getInstance();
c.set(year, month, day);
toDate.setText(c.getTime().toGMTString());
}
};


final Calendar c = Calendar.getInstance();
year = c.get(Calendar.YEAR);
month = c.get(Calendar.MONTH);
day = c.get(Calendar.DAY_OF_MONTH);
DatePickerDialog datePicker = new DatePickerDialog(
SUP101SampleActivity.this, datePickerListener, year,
month, day);
datePicker.show();

}
});