Question

can we create a runtime Date Picker Dialog from a non activity class in android?

Answer 1

In order to create any dialog you need to pass the context (you can pass through constructor or through any function arguments )

Then to create a Date Picker Dialog

 Calendar c = Calendar.getInstance();//To initialize with the current date 
            int mYear = c.get(Calendar.YEAR);
            int mMonth = c.get(Calendar.MONTH);
            int mDay = c.get(Calendar.DAY_OF_MONTH);

        DatePickerDialog dialog= new DatePickerDialog(context, mDateSetListener,
                       mYear, mMonth, mDay);
        dialog.show();