[mono-android] Events for date and time picker

[Jonathan Pryor]

On Nov 19, 2011, at 8:38 PM, Paul F. Johnson wrote:
> Should I still be using a listener and if so, how?

Yes, set via the DatePicker.Init() method:

	http://androidapi.xamarin.com/monodoc.ashx?link=M%3aAndroid.Widget.DatePicker.Init(System.Int32%2cSystem.Int32%2cSystem.Int32%2cAndroid.Widget.DatePicker.IOnDateChangedListener)

You'll need to implement the DatePicker.IOnDateChangedListener interface:

	class DateChangedListener : Java.Lang.Object, DatePicker.IOnDateChangedListener {

		Action<DatePicker, int, int, int> callback;

		public DateChangedListener (Action<DatePicker, int, int, int> callback)
		{
			this.callback = callback;
		}

		public void OnDateChanged (DatePicker view, int year, int monthOfYear, int dayOfMonth)
		{
			callback (view, year, monthOfYear, dayOfMonth);
		}
	}

I don't know what context you need, but to use the above you would:

	DatePicker dp = ...;
	dp.Init (2011, 11, 30, new DateChangedListener ((picker, year, month, day) => {
			// ...
	}));

 - Jon