public MasterMDPage()
{
InitializeComponent();
BindingContext = new MainMDPageMasterViewModel();
ListView = MenuItemsListView;
firstPage = ((MainMDPageMasterViewModel)BindingContext).MenuItems.First();
}
async private void ListView_ItemSelected(object sender, SelectedItemChangedEventArgs e)
{
var item = e.SelectedItem as MDMenuItem;
if (item == null)
{
return;
}
Page detailPage = null;
if (item.OlwaysActive == true)
{
//object is always active and exist
foreach (Page element in detailMDActivePages)
{
if (element.GetType() == item.TargetType && element.Title == item.Title)
{
detailPage = element;
break;
}
}
// has not been created yet
if (detailPage == null)
{
detailPage = (Page)Activator.CreateInstance(item.TargetType);
detailPage.Title = item.Title;
detailMDActivePages.Add(detailPage);
}
}
else
{
//object not always exist
detailPage = (Page)Activator.CreateInstance(item.TargetType);
detailPage.Title = item.Title;
}
Detail = new NavigationPage(detailPage)
{
BarBackgroundColor = Color.FromHex("5ABAFF"),
//BarTextColor = Color.FromHex("555555")
};
IsPresented = false;
switch (Device.RuntimePlatform)
{
case Device.iOS:
case Device.Android:
((ListView)sender).SelectedItem = null;
break;
case Device.UWP:
await Task.Delay(10);
((ListView)sender).SelectedItem = null;
var numberColl = ((ObservableCollection <MDMenuItem>)masterMDPage.ListView.ItemsSource).Count + 1;
MDMenuItem[] colArray = new MDMenuItem[numberColl];
if (listTempUWP != null)
{
colArray[listTempUWP.Id] = listTempUWP;
}
foreach (ApplicationForRunners.AplicationPages.MDMenuItem itemLV in masterMDPage.ListView.ItemsSource)
{
if (itemLV == e.SelectedItem)
{
listTempUWP = itemLV;
}
else
{
colArray[itemLV.Id] = itemLV;
}
}
ObservableCollection <MDMenuItem> coll = new ObservableCollection <MDMenuItem>();
for (int i = 0; i < numberColl; i++)
{
if (colArray[i] != null)
{
coll.Add(colArray[i]);
}
}
masterMDPage.ListView.ItemsSource = coll;
break;
}
}