private NavigationServiceEx InitializeNavigationService()
{
NavigationServiceEx navService = new NavigationServiceEx();
navService.Configure(nameof(MainPage), typeof(MainPage));
navService.Configure(nameof(SettingsPage), typeof(SettingsPage));
#if WINDOWS_PHONE_APP
HardwareButtons.BackPressed += (s, e) =>
{
if (navService.BackStackDepth == 0 || navService.BackStack[navService.BackStackDepth - 1] == null)
{
e.Handled = false; //let the system do what it will
}
else
{
navService.OnBackButtonPressed(s, new Common.UniversalBackPressedEventArgs(e.Handled));
e.Handled = true;
}
};
#endif
return navService;
}
public MainViewModel(IFileService fileService, INavigationServiceEx navService)
{
_fileService = (fileService as FileService);
_navigationService = navService as NavigationServiceEx;
}
public SettingsViewModel(IFileService fileService, INavigationServiceEx navService)
{
_fileService = fileService as FileService;
_navigationService = navService as NavigationServiceEx;
}