void ShowFragment(BaseFragment fragment)
{
var tag = fragment.GetTag();
var transaction = SupportFragmentManager
.BeginTransaction()
.Replace(Resource.Id.fragment_container, fragment, tag);
transaction.AddToBackStack(tag);
transaction.Commit();
_viewModel.CurrentFragmentTag = tag;
}
void ShowInitialFragment()
{
var currentFragmentTag = _viewModel.CurrentFragmentTag;
if (string.IsNullOrWhiteSpace(currentFragmentTag) ||
currentFragmentTag == BaseFragment.GetTag <PostsFragment>())
{
var item = _navigationView.Menu.FindItem(Resource.Id.nav_posts);
SwapFragmentForMenuItem(item);
}
else if (currentFragmentTag == BaseFragment.GetTag <CommentsFragment>())
{
SwapFragmentForNonMenuItem(new CommentsFragment());
}
}
