private T GetElementFromRouting <T>(string routeWithParams) where T : Element
{
var routeAndParams = routeWithParams.Split('?');
if (routeAndParams.Length > 1)
{
var routeName = routeAndParams.FirstOrDefault();
var query = routeAndParams.LastOrDefault();
var queryData = ParseQueryString(query);
var page = (T)Routing.GetOrCreateContent(routeName);
var attrs = (QueryPropertyAttribute[])Attribute.GetCustomAttributes(
page.GetType(),
typeof(QueryPropertyAttribute));
if (attrs != null && attrs.Length > 0)
{
foreach (var attr in attrs)
{
queryData.TryGetValue(attr.QueryId, out var value);
var prop = page
.GetType()
.GetProperty(attr.Name, BindingFlags.Public | BindingFlags.Instance);
if (null != prop && prop.CanWrite)
{
prop.SetValue(page, value, null);
}
}
}
return(page);
}
else
{
return((T)Routing.GetOrCreateContent(routeWithParams));
}
}
public async Task CaseIgnoreRouting()
{
var routes = new[] { "Tab1", "TAB2", "@-_-@", "+:~", "=%", "Super_Simple+-Route.doc", "1/2", @"1\2/3", "app://tab" };
var services = Substitute.For <IServiceProvider>();
foreach (var route in routes)
{
var formattedRoute = Routing.FormatRoute(route);
Routing.RegisterRoute(formattedRoute, typeof(ShellItem));
var content1 = Routing.GetOrCreateContent(formattedRoute, services);
Assert.IsNotNull(content1);
Assert.AreEqual(Routing.GetRoute(content1), formattedRoute);
}
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute("app://IMPL_tab21", typeof(ShellItem)));
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute(@"app:\\IMPL_tab21", typeof(ShellItem)));
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute(string.Empty, typeof(ShellItem)));
Assert.Catch(typeof(ArgumentNullException), () => Routing.RegisterRoute(null, typeof(ShellItem)));
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute("tab1/IMPL_tab11", typeof(ShellItem)));
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute("IMPL_shell", typeof(ShellItem)));
Assert.Catch(typeof(ArgumentException), () => Routing.RegisterRoute("app://tab2/IMPL_tab21", typeof(ShellItem)));
}
public static Task GoToModalAsync(this Shell shell, string route)
{
var page = Routing.GetOrCreateContent(route) as Page;
if (page is null)
{
return(Task.CompletedTask);
}
return(shell.Navigation.PushModalAsync(new NavigationPage(page)
{
BarBackgroundColor = Color.Transparent
}));
}
// https://forums.xamarin.com/discussion/168512/shell-showing-modal-pages
public static Task GoToModalAsync(this Shell shell, string route, object navigationData, bool animate = false, EventHandler onOK = null)
{
var page = Routing.GetOrCreateContent(route) as Page;
if (page is null)
{
return(Task.CompletedTask);
}
page.BindingContext = navigationData;
if (page is IPageOK iPage)
{
iPage.OnOK += onOK;
}
return(shell.Navigation.PushModalAsync(new NavigationPage(page), animate));
}
public static Task GoToModalAsync(this Shell shell, string route)
{
try
{
if (!(Routing.GetOrCreateContent(route) is Page page))
{
return(Task.CompletedTask);
}
return(shell.Navigation.PushModalAsync(new NavigationPage(page)
{
BarBackgroundColor = Color.Transparent
}));
}
catch (Exception ex)
{
var exception = new NavigationException($"Navigation to route {route} failed. ", ex);
logger.Error(exception);
throw exception;
}
}
public void DetermineAndSetMainPage(string mainRouteName) => Application.Current.MainPage = (Shell)Routing.GetOrCreateContent(mainRouteName);
async Task HandleAddItemAsync()
{
await Shell.Current.Navigation.PushModalAsync(Routing.GetOrCreateContent("new") as ContentPage);
}
public Element GetOrCreateContent(string route)
{
return(Routing.GetOrCreateContent(route));
}
public Task NavigateToPageAsync(string routeWithParams, bool animated = true) =>
Application.Current.MainPage.Navigation.PushAsync(
(Page)Routing.GetOrCreateContent(routeWithParams), animated);