how do i compare current date with user input date from date picker

Question

I am trying to keep constraint on date and time. I want that if user tries to set date less than current date then it should show alert, and same thing is to be done with ti

Answer 1

protected boolean checkDateValidity(Date date){
        Calendar cal = new GregorianCalendar(date.getYear() + 1900, date.getMonth(), date.getDate(), date.getHours(), date.getMinutes());
        if((cal.getTimeInMillis()-System.currentTimeMillis()) <= 0){
            return false;
        }else{
            return true;
        }
    }

pass the date object to this method

if it returns false means you will show alert message