问如何将日期选择器文本框日期限制为未来日期。它应该只允许以前的日期

EN

public Dialog oncreateDialogue(int id)
{
    Calendar currentDate= Calendar.getInstance();
    final int cyear = currentDate.get(Calendar.YEAR);
    final int cmonth = currentDate.get(Calendar.MONTH);
    final int cday = currentDate.get(Calendar.DAY_OF_MONTH);

    // Log.d("", "cyear"+cyear + cmonth + cday);

    DatePickerDialog dialog = null;
    /* if ( Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB )
    {
       dialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener()
        {
            @Override
            public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDate)
            {
               // mTextView.setText(selectedDate + "/" + selectedMonth + 1 + "/" + selectedYear);
                Log.d("", "ondateset"+selectedDate + "/" + selectedMonth + "/" + selectedYear);

            }

        }, cyear, cmonth, cday);
       // Calendar currentDate = Calendar.getInstance();
        dialog.getDatePicker()

        //If you need you can set min date too
    }
    else
    {*/
    dialog = new DatePickerDialog(this, new DatePickerDialog.OnDateSetListener()
    {
        @Override
        public void onDateSet(DatePicker view, int selectedYear, int selectedMonth, int selectedDate)
        {
            int lmn=selectedMonth+1;
            sp_dobFlag=true;
            selectedDatepublic=selectedDate + "/"+lmn  + "/"+selectedYear ;
            ed_dob.setText(selectedDatepublic);
            //Log.d("", "ondateset"+selectmnth);
        }
    }, cyear, cmonth , cday)
    {

        @Override
        public void onDateChanged(DatePicker view, int year, int month, int day)
        {
            Log.d("", "not>--ondatechange"+cday);
            Log.d("", "not>--ondatechange"+day);

            if (year > cyear) 
            {

                Log.d("", "date >cdate");
                view.updateDate(cyear, cmonth, cday); //update the date picker to selected date
            }

            if(year==cyear)
            {
                if(month > cmonth)
                {
                    view.updateDate(cyear, cmonth, cday);
                }
            }

            if(year==cyear)
            {
                if(month == cmonth)
                {
                    if(day > cday)
                    {
                        view.updateDate(cyear, cmonth, cday);
                    }

                }
            }

        }
    };
    // }
    return dialog;

}