async Task NavigateToView(Type viewModelType)
{
if (viewModelType is null)
{
throw new ArgumentNullException(nameof(viewModelType));
}
Type viewType;
if (!_map.TryGetValue(viewModelType, out viewType))
{
throw new ArgumentException("No view found in view mapping for " + viewModelType.FullName + ".");
}
var constructor = viewType.GetTypeInfo()
.DeclaredConstructors
.FirstOrDefault(dc => dc.GetParameters().Count() <= 0);
var view = constructor.Invoke(null) as Page;
var vm = ((App)Application.Current).Kernel.GetService(viewModelType);
view.BindingContext = vm;
await XamarinFormsNav.PushAsync(view, true);
}
public async Task GoBack()
{
if (CanGoBack)
{
await XamarinFormsNav.PopAsync(true);
}
OnCanGoBackChanged();
}
public async Task RemoveLastView()
{
if (XamarinFormsNav.NavigationStack.Any())
{
var lastView = XamarinFormsNav.NavigationStack[XamarinFormsNav.NavigationStack.Count - 2];
XamarinFormsNav.RemovePage(lastView);
}
}
public async Task NavigateToMainPage()
{
if (XamarinFormsNav.NavigationStack.Count <= 1)
{
return;
}
for (var i = 0; i < XamarinFormsNav.NavigationStack.Count; i++)
{
await XamarinFormsNav.PopToRootAsync();
}
}
public async Task ClearBackStack()
{
if (XamarinFormsNav.NavigationStack.Count <= 1)
{
return;
}
for (var i = 0; i < XamarinFormsNav.NavigationStack.Count - 1; i++)
{
XamarinFormsNav.RemovePage(XamarinFormsNav.NavigationStack[i]);
}
}
private async Task NavigateToView(Type viewModelType)
{
Type viewType;
if (!_map.TryGetValue(viewModelType, out viewType))
{
throw new ArgumentException("No view found in View Mapping for " + viewModelType.FullName + ".");
}
var constructor = viewType.GetTypeInfo()
.DeclaredConstructors
.FirstOrDefault(dc => dc.GetParameters().Count() <= 0);
var view = constructor.Invoke(null) as Page;
await XamarinFormsNav.PushAsync(view, true);
}
