protected override void OnCreate(Bundle savedInstanceState)
{
base.OnCreate(savedInstanceState);
// Set our view from the "main" layout resource
SetContentView(Resource.Layout.Main);
_noMessageTextView = FindViewById <TextView>(Resource.Id.emptyText);
_recyclerView = FindViewById <RecyclerView>(Resource.Id.recyclerView);
_recyclerView.ChildViewAdded += (sender, args) => { _noMessageTextView.Visibility = ViewStates.Gone; };
_recyclerView.ChildViewRemoved += (sender, args) => { if (_recyclerView.ChildCount == 0)
{
_noMessageTextView.Visibility = ViewStates.Visible;
}
};
_db = MessageDB.Create();
_messageViewerAdapter = new MessageViewerAdapter(_db.GetMessageDataSource());
_recyclerView.SetAdapter(_messageViewerAdapter);
_recyclerView.SetLayoutManager(new LinearLayoutManager(this));
_handler = new Handler(x => {
OnDataSourceUpdated(x);
});
_dataSourceUpdateListener = new DataSourceUpdateListener(_handler);
}