ytabuchi

var stack = new StackLayout
{
    Children =
    {
        new BoxView
        {
            WidthRequest = 100,
            HeightRequest = 50,
            BackgroundColor = Color.FromHex("cccccc")
        },

ytabuchi

<StackLayout>
  <BoxView WidthRequest="100"
           HeightRequest="50"
           BackgroundColor="#cccccc"/>
  <BoxView WidthRequest="100" 
           HeightRequest="50"
           BackgroundColor="#ffaaaa"
           HorizontalOptions="Start"/>
  <BoxView WidthRequest="100" 
           HeightRequest="50"

ytabuchi

var box00 = new BoxView
{
    BackgroundColor = Color.FromHex("#ffaaaa")
};
var box01 = new BoxView
{
    BackgroundColor = Color.FromHex("#aaffaa")
};
var box10 = new BoxView
{

ytabuchi

<BoxView Grid.Row="0" Grid.Column="0" BackgroundColor="#ffaaaa" />
<BoxView Grid.Row="0" Grid.Column="1" Grid.RowSpan="2"  BackgroundColor="#aaffaa"/>
<BoxView Grid.Row="1" Grid.Column="0"  BackgroundColor="#aaaaff"/>
<BoxView Grid.Row="2" Grid.Column="0" Grid.ColumnSpan="2" BackgroundColor="#aaaaaa" />

ytabuchi

var grid = new Grid();
grid.RowDefinitions.Add(new RowDefinition
{
    Height = new GridLength(2, GridUnitType.Star)
});
grid.RowDefinitions.Add(new RowDefinition 
{
    Height = new GridLength (1, GridUnitType.Star) 
});
grid.RowDefinitions.Add (new RowDefinition 

ytabuchi

<Grid>
  <Grid.RowDefinitions>
    <RowDefinition Height="2*" />
    <RowDefinition Height="*" />
    <RowDefinition Height="200" />
  </Grid.RowDefinitions>
  <Grid.ColumnDefinitions>
    <ColumnDefinition Width="Auto" />
    <ColumnDefinition Width="*" />
  </Grid.ColumnDefinitions>

ytabuchi

protected override async void OnAppearing()
{
    base.OnAppearing();

    await iconImage.ScaleTo(1, 2000); //初期化などの時間のかかる処理を想定
    await iconImage.ScaleTo(0.9, 1500, Easing.Linear);
    await iconImage.ScaleTo(150, 1200, Easing.Linear);
    await Navigation.PushAsync(new AnimationTest());
}

ytabuchi

Public partial class CodeBehindPage : ContentPage
{
    ObservableCollection<Item> Items = new ObservableCollection<Item>();

    public CodeBehindRamenPage()
    {
        InitializeComponent();

        // Items初期化
        this.Items.Clear();

ytabuchi

public class RamenPageViewModel : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    #region プロパティ

    private ObservableCollection<RamenItem> _items = Ramen.Instance.Items;
    public ObservableCollection<RamenItem> Items
    {
        get { return _items; }

ytabuchi

public class Ramen : INotifyPropertyChanged
{
    public event PropertyChangedEventHandler PropertyChanged;

    /// <summary>
    /// シングルトンのインスタンス
    /// </summary>
    public static Ramen Instance { get; } = new Ramen();

    /// <summary>