Select A Date in a Fragment

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This recipe will show how to use a DatePickerDialog inside of a Fragment.


Follow these steps to use a DatePickerDialog inside a Fragment:

  1. Create a Fragment in your Xamarin.Android project, and have the Fragment implement Android.App.DatePickerDialog.IOnDateSetListener.
  2. Implement the method required by the interface:
public void OnDateSet(DatePicker view, int year, int monthOfYear, int dayOfMonth)
    var date = new DateTime(year, monthOfYear + 1, dayOfMonth);
    View.FindViewById<TextView>(Resource.Id.display_date_text).Text = "You picked " + date.ToString("yyyy-MMM-dd");
  1. Create a new class that inherits from DialogFragment:
public class DatePickerDialogFragment : DialogFragment
    private readonly Context _context;
    private  DateTime _date;
    private readonly Android.App.DatePickerDialog.IOnDateSetListener _listener;

    public DatePickerDialogFragment(Context context, DateTime date, Android.App.DatePickerDialog.IOnDateSetListener listener  )
        _context = context;
        _date = date;
        _listener = listener;

    public override Dialog OnCreateDialog(Bundle savedState)
        var dialog = new Android.App.DatePickerDialog(_context, _listener, _date.Year, _date.Month - 1, _date.Day);
        return dialog;
  1. In the Fragment that was created in step one, modify it so that it will use the DialogFragment subclass:
public override View OnCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
    var view = inflater.Inflate(Resource.Layout.fragment_layout, container, false);
    view.FindViewById<Button>(Resource.Id.pick_date_button).Click += (sender, args) =>
                                                                             var dialog = new DatePickerDialogFragment(Activity, DateTime.Now, this);
                                                                             dialog.Show(FragmentManager, null);
    return view;

Additional Information

The DialogFragment in Android displays a dialog onto of the Activity that is hosting the fragment. This example uses the DialogFragment class around the standard DatePickerDialog. By having the Fragment implement Android.App.DatePickerDialog.IOnDateSetListener it can provide a callback to the DatePickerDialog to respond to when a date is selected.

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