Date and time Dialog in Android

private static final int DIALOG_DATE = 1;

       private static final int DIALOG_TIME = 2;      

       private Calendar dateTime = Calendar.getInstance();

       private SimpleDateFormat dateFormatter = new SimpleDateFormat(

                     "MMMM dd yyyy");

       private SimpleDateFormat timeFormatter = new SimpleDateFormat(

                     "hh:mm a");

       txtstdate.setText(dateFormatter.format(dateTime.getTime()));  

       txtAddtime.setText(timeFormatter.format(dateTime.getTime()));

       @Override

       protected Dialog onCreateDialog(int id)

       {

              switch (id)

              {

              case DIALOG_DATE:

                     return new DatePickerDialog(this, new OnDateSetListener()

                     {

                           @Override

                           public void onDateSet(DatePicker view, int year,

                                         int monthOfYear, int dayOfMonth)

                           {

                           dateTime.set(year, monthOfYear, dayOfMonth);                                  txtstdate.setText(dateFormatter.format(dateTime.getTime()));                                  txtAdddate.setText(dateFormatter.format(dateTime.getTime()));

                           }

                     }, dateTime.get(Calendar.YEAR),

                     dateTime.get(Calendar.MONTH),

                     dateTime.get(Calendar.DAY_OF_MONTH));

              case DIALOG_TIME:

                     return new TimePickerDialog(this, new OnTimeSetListener()

                     {

                           @Override

                           public void onTimeSet(TimePicker view, int hourOfDay,

                                         int minute)

                           {

                                  dateTime.set(Calendar.HOUR_OF_DAY, hourOfDay);

                                  dateTime.set(Calendar.MINUTE, minute);

                                  txtsttime.setText(timeFormatter.format(dateTime.getTime()));

                                  txtAddtime.setText(timeFormatter.format(dateTime.getTime()));

                           }

                     }, dateTime.get(Calendar.HOUR_OF_DAY),

                     dateTime.get(Calendar.MINUTE), false);

              }

              return null;

       }

}

Call Dialog:

       showDialog(DIALOG_DATE); 

       showDialog(DIALOG_TIME);

Show Current Date and Time Format with Continuously update on text view: 

       private void Start_Timer()

{  

       timer1 = new Timer();

       timer1.schedule(new UpdateTimeTask(), 1000,1000);

}

class UpdateTimeTask extends TimerTask

{

       public void run()

       {         

              Calendar cal = Calendar.getInstance();

              SimpleDateFormat dateFormatter = new SimpleDateFormat(

                           "EEEE, MMMM d, yyyy");

              dt=dateFormatter.format(cal.getTime());

              if(Chk_DateFormate.isChecked())

              {

                     SimpleDateFormat timeFormatter = new SimpleDateFormat("H:mm");

                     time=timeFormatter.format(cal.getTime());

              }

              else

              {

                     SimpleDateFormat timeFormatter = new SimpleDateFormat("hh:mm a"); 

                     time=timeFormatter.format(cal.getTime());

              }     

              setTimertext(time);  

       }

}

public void setTimertext(String strValue)

{  

       runOnUiThread(new Runnable()

       {

              public void run()

              {

                     String[]time1=time.split(" ");

                     if(time.endsWith("M"))

                     {

                           txt_time.setText(""+time1[0]);

                           txt_AMPM.setText(""+time1[1]);

                     }

                     else

                     {

                           txt_time.setText(time);

                           txt_AMPM.setText("");

                     }

                     txt_date.setText(dt);

              }

       });