I'm new in android programming and I've sometimes some problems. I have to pass day, month and year selected by DatePicker Dialog fragment to the Activity that invoke the fragment. I've used use the android guide code:
public static class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Use the current date as the default date in the picker final Calendar c = Calendar.getInstance(); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); int day = c.get(Calendar.DAY_OF_MONTH); // Create a new instance of DatePickerDialog and return it return new DatePickerDialog(getActivity(), this, year, month, day); } public void onDateSet(DatePicker view, int year, int month, int day) { // Do something with the date chosen by the user } } I've already asked in another forum and they suggest me to override show() method to pass another variable like this:
@Override public void show (FragmentManager manager, String tag, DatePickerDialog.OnDateSetListener dateSetListener) { super(manager, tag); this.dateSetListener = dateSetListener; } No way, it doesn't work. How can I do?
Sorry for my bad english and for the stupid question :( Thanks in advance, Damiano
EDIT:
I have been reviewed the code by implementing interface, but I still have problems:
public class DatePickerFragment extends DialogFragment implements DatePickerDialog.OnDateSetListener { onDataSceltaListener mListener; @Override public Dialog onCreateDialog(Bundle savedInstanceState) { // Use the current date as the default date in the picker final Calendar c = Calendar.getInstance(); int year = c.get(Calendar.YEAR); int month = c.get(Calendar.MONTH); int day = c.get(Calendar.DAY_OF_MONTH); // Create a new instance of DatePickerDialog and return it return new DatePickerDialog(getActivity(), this, year, month, day); } public void onDateSet(DatePicker view, int year, int month, int day) { mListener.onDataScelta(year,month,day); } public interface OnDataSceltaListener { public void onDataScelta(int year, int month, int day); } @Override public void onAttach(Activity activity) { super.onAttach(activity); try { mListener = (OnDataSceltaListener) activity; } catch (ClassCastException e) { throw new ClassCastException(activity.toString() + " must implement OnArticleSelectedListener"); } } } What is the problem? :(
