public static void Clear()
{
if (_instance != null)
{
lock (_instanceLock)
{
if (_instance != null)
{
_instance = null;
}
}
}
}
public Front()
{
NavigationPage.SetHasBackButton(this, false);
//NavigationPage.SetHasNavigationBar(this, false);
InitializeComponent();
this.Title = "Welcome " + CrossSecureStorage.Current.GetValue("username").ToUpper();
BarBackgroundColor = Color.FromHex("#484559");
BarTextColor = Color.White;
Popup = new PopupMenu()
{
BindingContext = ViewModel
};
var doneItem = new ToolbarItem
{
Icon = "logout.png"
};
var infoItem = new ToolbarItem
{
Icon = "info.png"
};
this.ToolbarItems.Add(infoItem);
this.ToolbarItems.Add(doneItem);
doneItem.Clicked += async(object sender, System.EventArgs e) =>
{
var answer = await DisplayAlert("Logout", "Do you want to logout? ", "Yes", "No");
if (answer)
{
ApiClientWinAuthExampleSingleton.Clear();
CrossSecureStorage.Current.DeleteKey("username");
CrossSecureStorage.Current.DeleteKey("password");
CrossSecureStorage.Current.DeleteKey("token");
Application.Current.MainPage = new NavigationPage(new Login());
await Navigation.PopToRootAsync(true);
}
};
infoItem.Clicked += async(object sender, System.EventArgs e) =>
{
await DisplayAlert("About", "Official MIAO App, created by NIKO", "Thanks");
};
barcode = new TestScan();
overview = new MainPage();
findInstrument = new FindInstrument();
this.CurrentPageChanged += (object sender, EventArgs e) => {
var i = this.Children.IndexOf(this.CurrentPage);
if (i == 1)
{
MessagingCenter.Send <Front>(this, "itemPage");
}
};
Children.Add(barcode);
Children.Add(overview);
Children.Add(findInstrument);
var pages = Children.GetEnumerator();
// pages.MoveNext(); // First page
// pages.MoveNext(); // Second page
//CurrentPage = null;
}
