DatePickerDialog

DatePickerDialog is the simplest way to use DatePicker, because you can show dialog anywhere in your app. You don’t have to implement your own layout with DatePicker widget.

How to show dialog:

DatePickerDialog datePickerDialog = new DatePickerDialog(context, listener, year, month, day);
datePickerDialog.show();

You can get DataPicker widget from dialog above, to get access to more functions, and for example set minimum date in milliseconds:

DatePicker datePicker = datePickerDialog.getDatePicker();
datePicker.setMinDate(System.currentTimeMillis());