IsVisible=false
。public class JumpListViewModel : INotifyPropertyChanged
{
private ObservableCollection<Item> _allItems;
private List<string> _alphabetList;
public event PropertyChangedEventHandler PropertyChanged;
[NotifyPropertyChangedInvocator]
protected virtual void OnPropertyChanged([CallerMemberName] string propertyName = null) => PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
public JumpListViewModel()
{
AllItems = new ObservableCollection<Item>(new List<Item> { new Item { MyText = "1" }, new Item { MyText = "2" }, new Item { MyText = "3" } });
AlphabetList = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray().Select(x => x.ToString()).ToList();
}
public ObservableCollection<Item> AllItems
{
get { return _allItems; }
set
{
_allItems = value;
OnPropertyChanged();
}
}
public List<string> AlphabetList
{
get { return _alphabetList; }
set
{
_alphabetList = value;
OnPropertyChanged();
}
}
}
查看:
<RelativeLayout VerticalOptions="FillAndExpand">
<ListView VerticalOptions="FillAndExpand" HasUnevenRows="True" ItemsSource="{Binding AllItems}"
SeparatorColor="Transparent" SeparatorVisibility="None" BackgroundColor="Transparent"
RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=1}">
<RelativeLayout.WidthConstraint>
<OnPlatform x:TypeArguments="Constraint" Android="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=0.9}"
iOS="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=1}"
WinPhone="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=1}" />
</RelativeLayout.WidthConstraint>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout HorizontalOptions="FillAndExpand" BackgroundColor="Silver">
<Label Text="{Binding MyText}" />
<Button Text="button" />
<BoxView HeightRequest="1" Color="Gray" BackgroundColor="Gray" HorizontalOptions="FillAndExpand" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<ListView VerticalOptions="FillAndExpand" HasUnevenRows="True" ItemsSource="{Binding AlphabetList}"
SeparatorColor="Transparent" SeparatorVisibility="None" BackgroundColor="Transparent"
RelativeLayout.HeightConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=0.9}"
RelativeLayout.YConstraint="{ConstraintExpression Type=RelativeToParent, Property=Height, Factor=0.05}"
RelativeLayout.XConstraint="{ConstraintExpression Type=RelativeToParent, Property=Width, Factor=0.9}">
<RelativeLayout.WidthConstraint>
<OnPlatform x:TypeArguments="Constraint" Android="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=0.1}"
iOS="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=0, Constant=0}"
WinPhone="{ConstraintExpression Type=RelativeToParent, Property=Width,Factor=0, Constant=0}" />
</RelativeLayout.WidthConstraint>
<ListView.IsVisible>
<OnPlatform x:TypeArguments="x:Boolean" WinPhone="False" iOS="False" Android="True" />
</ListView.IsVisible>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<Label Text="{Binding .}" TextColor="Red" FontSize="Micro" />
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</RelativeLayout>
来自 Android 的截图: