add clear button

[nevermoresss]

No description provided.

[wdullaer]

What does this do?
It seems like it adds just ad additional callback method (which btw has a typo in its name).

What does this buy you that you can't accomplish with the standard Dialog callbacks or say a button in your app?

[nevermoresss]

i think that if someone like me wants to clear a task's duedate than he needs to add a clear button. actually, the button is gone if you don't set the clearListener. waiting for your reply ：）

[wdullaer]

This is really too specific functionality for a generic date / timepicker.
If you don't feel comfortable maintaining your own changes, you could use a remove button in your app (see google keep for how they do it), or for example do swipe to remove on the reminder entries (which is what I do in an app).

[nevermoresss]

ok,thanks for your advice

[denversc]

FYI, I just documented a slightly hacky, but elegant and fully functional, way to add a "Clear" button into DatePickerDialog in issue #183

[Anupriya25]

@denversc can you please tell how to then use ClearableDatePickerDialog to create a dialog.
DatePickerDialog dpd = DatePickerDialog.newInstance(
MainActivity.this,
now.get(Calendar.YEAR),
now.get(Calendar.MONTH),
now.get(Calendar.DAY_OF_MONTH)
);
instead of datepickerdialog