/// <summary>
/// Returns true iff the view has a region attribute.
/// </summary>
/// <param name="view"></param>
/// <returns></returns>
public static bool HasRegionAttribute(this MvxFragment view)
{
var attributes = view
.GetType()
.GetCustomAttributes(typeof(RegionAttribute), true);
return(attributes.Count() > 0);
}
public void ShowMenuItem(MvxFragment fragment)
{
var topFragment = SupportFragmentManager.FindFragmentById(Resource.Id.content_frame);
if (topFragment != null && topFragment.GetType().Equals(fragment.GetType()))
{
return;
}
SupportFragmentManager.BeginTransaction().Replace(Resource.Id.content_frame, fragment).Commit();
}
private void ShowFragment(MvxFragment fragment, bool addToBackStack)
{
var transaction = _fragmentManager.BeginTransaction();
if (addToBackStack)
{
transaction.AddToBackStack(fragment.GetType().Name);
}
transaction
.Replace(Resource.Id.contentFrame, fragment)
.Commit();
}
/// <summary>
/// Gets the Android resource ID from the RecionAttribute associated with the view.
/// </summary>
/// <param name="view"></param>
/// <returns></returns>
public static int GetRegionId(this MvxFragment view)
{
var attributes = view
.GetType()
.GetCustomAttributes(typeof(RegionAttribute), true);
if (attributes.Count() == 0)
{
throw new InvalidOperationException("The IMvxView has no region attribute.");
}
else
{
return(((RegionAttribute)attributes.First()).Id);
}
}
private void showFragment(MvxFragment fragment, bool addToBackStack)
{
var transaction = this.fragmentManager.BeginTransaction();
if (addToBackStack && !fragment.ToString().StartsWith("LoginView"))
{
transaction.AddToBackStack(fragment.GetType().Name);
}
try
{
transaction
.Replace(Resource.Id.contentFrame, fragment)
.Commit();
}
catch (Exception)
{
}
}
private void CloseCurrentFragment(Type fragmentType)
{
IList <Android.Support.V4.App.Fragment> fragments = SupportFragmentManager.Fragments;
if (fragments.Count == 0)
{
return;
}
MvxFragment currentFragment = (MvxFragment)fragments[fragments.Count - 1];
Type currentFragmentType = currentFragment.GetType();
if (currentFragmentType == fragmentType)
{
Finish();
return;
}
BaseViewModel viewModel = (BaseViewModel)currentFragment.ViewModel;
viewModel.GoBackCommand?.Execute(null);
}
public bool Show(MvxViewModelRequest request)
{
try
{
if (_enableDrawerOnNextNavigation)
{
this.EnableDrawer();
_enableDrawerOnNextNavigation = false;
}
var loaderService = Mvx.Resolve <IMvxViewModelLoader>();
var homeViewModel = this.ViewModel as HomeViewModel;
MvxFragment fragment = null;
var section = homeViewModel.GetSectionForViewModelType(request.ViewModelType);
if (section == MenuSection.Unknown)
{
this.Navigate(request, loaderService);
return(true);
}
this.CloseSlidingPanel();
switch (section)
{
case MenuSection.Map:
_currentSection = MenuSection.Map;
this.SupportActionBar.Title = homeViewModel.Title;
_navigationView.SetCheckedItem(0);
var map = this.FragmentManager.FindFragmentById(Resource.Id.mapView) as MapView;
if (map.ViewModel == null)
{
map.MapClicked += (s, a) => this.CloseSlidingPanel();
map.ViewModel = loaderService.LoadViewModel(request, null /* saved state */);
}
var transaction = this.FragmentManager.BeginTransaction();
foreach (var viewType in _frag2tag.Keys)
{
if (viewType != typeof(MapView))
{
var fragmentToRemove = this.FragmentManager.FindFragmentByTag(_frag2tag[viewType]);
if (fragmentToRemove != null)
{
transaction.Remove(fragmentToRemove);
}
}
}
this.CloseSlidingPanel();
this.FragmentManager.PopBackStackImmediate(null, PopBackStackFlags.None | PopBackStackFlags.Inclusive);
transaction.Commit();
return(true);
case MenuSection.Routes:
fragment = this.FindFragment <RoutesView>() ?? new RoutesView();
_currentSection = section;
break;
case MenuSection.RouteStops:
fragment = this.FindFragment <RouteStopsView>() ?? new RouteStopsView();
_currentSection = section;
break;
case MenuSection.Preferences:
fragment = this.FindFragment <PreferencesView>() ?? new PreferencesView();
_currentSection = section;
break;
case MenuSection.About:
fragment = this.FindFragment <AboutView>() ?? new AboutView();
_currentSection = section;
break;
}
IMvxFragmentView mvxFragmentView = fragment;
if (mvxFragmentView != null && mvxFragmentView.ViewModel == null)
{
mvxFragmentView.ViewModel = loaderService.LoadViewModel(request, null /* saved state */);
}
if (!_frag2tag.ContainsKey(fragment.GetType()))
{
_frag2tag[fragment.GetType()] = Guid.NewGuid().ToString();
}
this.FragmentManager.BeginTransaction()
.Replace(Resource.Id.content_frame, fragment, _frag2tag[fragment.GetType()])
.AddToBackStack(null)
.Commit();
var menuItem = homeViewModel.MenuItems.First(x => x.Id == (int)section);
_navigationView.SetCheckedItem(homeViewModel.MenuItems.IndexOf(menuItem));
_drawer.CloseDrawer(_navigationView);
return(true);
}
finally
{
_drawer.CloseDrawer(_navigationView);
}
}