Dismiss DatePickerDialog on pressing back button

Question

On my view I have a button which when pressed pops up a DatePickerDialog. The poppedup dialog has a \"Done\" button. When I press that button the selected date is populated

Answer 1

I wrote simple successor of standard DatePickerDialog that works fine for me:

/**
 * Enhanced date picker dialog. Main difference from ancestor is that it calls
 * OnDateSetListener only when when pressing OK button, and skips event when closing with
 * BACK key or by tapping outside a dialog.
 */
public class IBSDatePickerDialog extends DatePickerDialog {

    public IBSDatePickerDialog(final Context context, final OnDateSetListener callBack, final int year, final int monthOfYear, final int dayOfMonth) {
        super(context, callBack, year, monthOfYear, dayOfMonth);
    }

    public IBSDatePickerDialog(final Context context, final int theme, final OnDateSetListener callBack, final int year, final int monthOfYear, final int dayOfMonth) {
        super(context, theme, callBack, year, monthOfYear, dayOfMonth);
    }

    @Override
    public void onClick(final DialogInterface dialog, final int which) {
        // Prevent calling onDateSet handler when clicking to dialog buttons other, then "OK"
        if (which == DialogInterface.BUTTON_POSITIVE)
            super.onClick(dialog, which);
    }

    @Override
    protected void onStop() {
        // prevent calling onDateSet handler when stopping dialog for whatever reason (because this includes
        // closing by BACK button or by tapping outside dialog, this is exactly what we try to avoid)

        //super.onStop();
    }
}

Using dialog example (free bonus: adding Cancel button to dialog for even better usability):

public static class datePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener {

    @Override
    public Dialog onCreateDialog(final Bundle savedInstanceState) {

        Calendar cal = Calendar.getInstance();
        IBSDatePickerDialog dlg = new IBSDatePickerDialog(myActivity, this, cal.get(Calendar.YEAR), cal.get(Calendar.MONTH), cal.get(Calendar.DAY_OF_MONTH));

        // Add Cancel button into dialog
        dlg.setButton(DialogInterface.BUTTON_NEGATIVE, "Cancel", (OnClickListener) null);

        return dlg;
    }

    @Override
    public void onDateSet(final DatePicker view, final int year, final int month, final int day) {
        // TODO: do whatever you want with date selected
    }
}

public void showDatePickerDialog() {
    final datePickerFragment f = new datePickerFragment();
    f.show(getSupportFragmentManager(), "datePicker");
}