protected override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
// Parameter is item ID
Item = new ItemViewModel(ItemsDataSource.GetItemById((int)e.Parameter));
//UpdateMap();
var backStack = Frame.BackStack;
var backStackCount = backStack.Count;
if (backStackCount > 0)
{
var masterPageEntry = backStack[backStackCount - 1];
backStack.RemoveAt(backStackCount - 1);
// Doctor the navigation parameter for the master page so it
// will show the correct item in the side-by-side view.
var modifiedEntry = new PageStackEntry(
masterPageEntry.SourcePageType,
Item.Item.Number,
masterPageEntry.NavigationTransitionInfo
);
backStack.Add(modifiedEntry);
}
// Register for hardware and software back request from the system
SystemNavigationManager.GetForCurrentView().BackRequested += DetailPage_BackRequested;
}
protected async override void OnNavigatedTo(NavigationEventArgs e)
{
base.OnNavigatedTo(e);
var items = MasterListView.ItemsSource as List<ItemViewModel>;
if (items == null)
{
items = new List<ItemViewModel>();
var ds = await ItemsDataSource.GetAllItems();
foreach (var item in ds)
{
items.Add(new ItemViewModel(item));
}
MasterListView.ItemsSource = items;
}
if (!string.IsNullOrEmpty(e.Parameter.ToString()))
{
// Parameter is item ID
var id = (int)e.Parameter;
_lastSelectedItem =
items.Where((item) => item.Item.Number == id).FirstOrDefault();
}
UpdateForVisualState(AdaptiveStates.CurrentState);
// Don't play a content transition for first item load.
// Sometimes, this content will be animated as part of the page transition.
DisableContentTransitions();
}
protected override void OnNavigatedFrom(NavigationEventArgs e)
{
base.OnNavigatedFrom(e);
this.Item = null;
SystemNavigationManager.GetForCurrentView().BackRequested -= DetailPage_BackRequested;
}
private void OnBackRequested()
{
// Page above us will be our master view.
// Make sure we are using the "drill out" animation in this transition.
this.Item = null;
Frame.GoBack(new DrillInNavigationTransitionInfo());
}
private void MasterListView_ItemClick(object sender, ItemClickEventArgs e)
{
var clickedItem = (ItemViewModel)e.ClickedItem;
_lastSelectedItem = clickedItem;
UpdateMap();
if (AdaptiveStates.CurrentState == NarrowState)
{
// Use "drill in" transition for navigating from master list to detail view
Frame.Navigate(typeof(DetailPage), clickedItem.Item.Number, new DrillInNavigationTransitionInfo());
}
else
{
// Play a refresh animation when the user switches detail items.
EnableContentTransitions();
}
}