date and time Validation in android using edittext listener

I'm having a problem with on click of edit text,I want a date and time picker dialog should pop up on click of edit text.Please help me out.

public  void setstarttime()
    {
        startTimePicker = new TimePickerDialog(this, new TimePickerDialog.OnTimeSetListener() {
            public void onTimeSet(TimePicker picker, int hourOfDay, int minute) {

                //set selected time to calender
                //@author om
                startTimeCal.set(Calendar.MINUTE, minute);
                startTimeCal.set(Calendar.HOUR, hourOfDay);

                mStartTimeHour = hourOfDay;
                mStartTimeMinute = minute;


                String am_pm = (hourOfDay < 12) ? "AM" : "PM";
                starttime.setText(CommonUtil.getFormattedTimeInString(startTimeCal.getTimeInMillis()) + " " + am_pm);
                // timeValidation(TAG_STARTTIME);
            }
        }, mStartTimeHour, mStartTimeMinute, false);
        startTimePicker.show();
    }