protected override async void OnAppearing()
{
base.OnAppearing();
if (_viewModel != null)
{
await _viewModel.InitAsync();
}
WalkEntriesListView.Opacity = 0;
await WalkEntriesListView.FadeTo(1, 4000);
// crazy animation. annoying but is a good example
//var parentAnimation = new Animation();
//var ZoomInAnimation = new Animation(v => LoadingWalkInfo.Scale = v, 1, 2, Easing.BounceIn, null);
//parentAnimation.Add(0, 0.5, ZoomInAnimation);
//var ZoomOutAnimation = new Animation(v => LoadingWalkInfo.Scale = v, 2, 1, Easing.BounceOut, null);
//parentAnimation.Insert(0.5, 1, ZoomOutAnimation);
//parentAnimation.Commit(this, "CustomAnimation", 16, 5000, null, null);
WalkEntriesListView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, new Binding("."));
WalkEntriesListView.BindingContext = _viewModel.WalksListModel;
}
// Method to initialise our View Model when the ContentPage appears
protected override async void OnAppearing()
{
base.OnAppearing();
if (_viewModel != null)
{
// Call the Init method to initialise the ViewModel
await _viewModel.Init();
}
// Set up and initialise the binding for our ListView
WalkEntriesListView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, new Binding("."));
WalkEntriesListView.BindingContext = _viewModel.WalksListModel;
}
// Method to initialise our View Model when the ContentPage appears
protected override async void OnAppearing()
{
base.OnAppearing();
if (_viewModel != null)
{
// Call the Init method to initialise the ViewModel
await _viewModel.Init();
if (!TwitterAuthDetails.isLoggedIn)
{
// We need to Navigate and display our Twitter Sign In Page
await _viewModel.Navigation.NavigateTo <TwitterSignInPageViewModel>();
}
}
//chap 09
// Create a FadingEntrance Animation to fade our WalkEntriesListView
WalkEntriesListView.Opacity = 0;
await WalkEntriesListView.FadeTo(1, 4000);
// Create a Custom Animation for our LoadingWalkInfo Label
// Create parent animation object
var parentAnimation = new Animation();
// Create "ZoomIn" animation and add to parent.
var ZoomInAnimation = new Animation(v => LoadingWalkInfo.Scale = v,
1, 2,
Easing.BounceIn, null);
parentAnimation.Add(0, 0.5, ZoomInAnimation);
// Create "ZoomOut" animation and add to parent.
var ZoomOutAnimation = new Animation(v => LoadingWalkInfo.Scale = v,
2, 1,
Easing.BounceOut, null);
parentAnimation.Insert(0.5, 1, ZoomOutAnimation);
// Commit parent animation
parentAnimation.Commit(this, "CustomAnimation", 16, 5000, null, null);
// end chap 09
// Set up and initialise the binding for our ListView
WalkEntriesListView.SetBinding(ItemsView <Cell> .ItemsSourceProperty, new Binding("."));
WalkEntriesListView.BindingContext = _viewModel.WalksListModel;
}