public static Android.Support.V4.App.FragmentActivity GetActivity([NotNull] this IView view)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
return(view.As(
activity => activity,
fragment => fragment.NotNull().Activity));
}
public static UINavigationController GetNavigationController([NotNull] this IView view)
{
if (view == null)
{
throw new ArgumentNullException(nameof(view));
}
return(view.As(
navigationController => navigationController,
viewController => viewController.NotNull().NavigationController));
}
internal static ILifecycleViewModelStore?Get(IView <ILifecycleViewModel> view)
{
LifecycleViewModelStoreFragment?store = null;
var fragmentManager = view.As(
activity => activity.SupportFragmentManager,
fragment => fragment.Activity.SupportFragmentManager);
if (!fragmentManager.IsDestroyed)
{
store = (LifecycleViewModelStoreFragment)fragmentManager.FindFragmentByTag(LifecycleViewModelStoreTag);
if (store == null)
{
store = LifecycleViewModelStoreFragment.NewInstance();
fragmentManager
.BeginTransaction()
.Add(store, LifecycleViewModelStoreTag)
.Commit();
}
}
return(store);
}