Hot Tuna Fragments

v3 of MvvmCross finally brings some Android Fragment action to MvvmCross

The integration is still a work in progress, but you can see some Fragment binding in https://github.com/slodge/FragmentSample/

This sample shows some basic principles:

- A fragment declared in AXML and it's DataContext (ViewModel) set in Code Behind

	var listFragment = (MyListFragment) SupportFragmentManager.FindFragmentById(Resource.Id.list_fragment);
	listFragment.ViewModel = ViewModel;

view raw f.cs hosted with ❤ by GitHub

	<fragment class="FragmentSample.UI.Droid.Views.MyListFragment"
	android:id="@+id/list_fragment"
	android:layout_width="fill_parent"
	android:layout_height="fill_parent"
	/>

view raw f.xml hosted with ❤ by GitHub

- Fragment switched in/out of a ViewGroup container programmatically using Code Behind

	_firstFragment = new MyFirstFragment()
	{
	ViewModel = ViewModel
	};
	ShowFormFragment(_firstFragment);
	private void ShowFormFragment(MvxFragment myFragment)
	{
	var t = SupportFragmentManager.BeginTransaction();
	t.Replace(Resource.Id.titles_fragment_holder, myFragment);
	t.Commit();
	}

view raw f.cs hosted with ❤ by GitHub

	<FrameLayout
	android:id="@+id/titles_fragment_holder"
	android:layout_width="fill_parent"
	android:layout_height="wrap_content"
	/>

view raw f.xml hosted with ❤ by GitHub

- Fragments loaded into Tabs

	[Activity]
	public class TabsFragmentActivity : MvxTabsFragmentActivity
	{
	public new TabViewModel ViewModel
	{
	get { return (TabViewModel)base.ViewModel; }
	set { base.ViewModel = value; }
	}
	public TabsFragmentActivity()
	: base(Resource.Layout.Page_TabsView, Resource.Id.actualtabcontent)
	{
	}
	protected override void AddTabs(Bundle args)
	{
	AddTab<Tab1Fragment>("Tab1", "Tab1", "Tab 1", args, ViewModel.Vm1);
	AddTab<Tab2Fragment>("Tab2", "Tab2", "Tab 2", args, ViewModel.Vm2);
	AddTab<Tab3Fragment>("Tab3", "Tab3", "Tab 3", args, ViewModel.Vm3);
	AddTab<Tab3Fragment>("Tab4", "Tab4", "Tab 4", args, ViewModel.Vm3);
	}
	}

view raw TabsFragmentActivity.cs hosted with ❤ by GitHub

- Fragments used in Dialogs

	public class FirstDialogFragment : MvxDialogFragment
	{
	private readonly Context _context;
	public FirstDialogFragment(Context context)
	{
	_context = context;
	}
	public override Dialog OnCreateDialog(Bundle savedState)
	{
	base.EnsureBindingContextSet(savedState);
	var view = this.BindingInflate(Resource.Layout.Dialog_FooBar, null);
	var dialog = new AlertDialog.Builder(_context);
	dialog.SetTitle("First Dialog");
	dialog.SetView(view);
	dialog.SetNegativeButton("Cancel", (s, a) => { });
	dialog.SetPositiveButton("OK", (s, a) => { });
	return dialog.Create();
	}
	}

view raw FirstDialogFragment.cs hosted with ❤ by GitHub

----

There's still plenty more to learn and explore in these Fragments - the lifecycle of fragments really is a bit odd... so this code isn't really fully production ready yet...

There's also quite a few other things to try - like maps, view pagers and bound fragment collections...

But at least fragments can now be used and can be easily data-bound :)