private void AddFlyoutItem(ContentPage page, PageConfigAttribute flyoutItemAttribute)
{
ShellSection shellSection = new ShellSection
{
Title = flyoutItemAttribute.FlyoutName,
Icon = flyoutItemAttribute.FlyoutIcon,
};
shellSection.Items.Add(new ShellContent()
{
Content = page
});
_shellItems.Add(flyoutItemAttribute.FlyoutItemPosition, shellSection);
}
private void Initialize(Type page, Type viewModelType, PageConfigAttribute attribute, List <Type> pageControllers, int index)
{
ContentPage currPage = (BasePage)Activator.CreateInstance(page);
currPage.Appearing += CurrPage_Appearing;
var viewModel = (BaseViewModel)Activator.CreateInstance(viewModelType);
viewModel.NavBarImage = attribute.FlyoutIcon;
viewModel.NavBarText = attribute.FlyoutName;
currPage.BindingContext = viewModel;
try
{
var controller =
(IPageController)Activator.CreateInstance(pageControllers.ElementAt(index), currPage);
_pageControllers.Add(controller);
controller.ExecuteInitializeViewModel(viewModel);
AddFlyoutItem(currPage, attribute);
}
catch (Exception)
{
Debug.WriteLine("Fail to add Page Controller");
}
}
public void InitializePageSystem()
{
var assemblyTypes = Assembly.GetExecutingAssembly().GetTypes();
var pageControllers = assemblyTypes.Where(c => c.Name.Contains("Controller") &&
c.GetInterfaces().Any(i => i == typeof(IPageController))).ToList();
for (int i = 0; i < pageControllers.Count(); i++)
{
Type page = assemblyTypes.FirstOrDefault(p => p.Namespace == pageControllers.ElementAt(i).Namespace &&
p.Name.Contains("Page") && p.BaseType == typeof(BasePage));
PageConfigAttribute attribute = pageControllers.ElementAt(i).GetCustomAttribute <PageConfigAttribute>();
if (attribute == null)
{
attribute = new PageConfigAttribute("", "", 0);
}
Type viewModelType = assemblyTypes.FirstOrDefault(p => p.Namespace == pageControllers.ElementAt(i).Namespace &&
p.Name.Contains("ViewModel") && p.BaseType == typeof(BaseViewModel));
if (page != null && viewModelType != null)
{
Initialize(page, viewModelType, attribute, pageControllers, i);
}
}
AddFlyoutItemsToShell();
}
