当我使一些控件不可见时，我的Listview正在填充屏幕的一半。 列表视图位于网格控件中。以下是我的代码
<?xml version="1.0" encoding="utf-8" ?>
<views:BasePage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:converters="clr-namespace:Sthotraani.Converters;assembly=Sthotraani"
xmlns:behaviors="clr-namespace:Sthotraani.Behaviors;assembly=Sthotraani"
xmlns:controls="clr-namespace:Sthotraani.CustomControls;assembly=Sthotraani"
xmlns:views="clr-namespace:Sthotraani.Views;assembly=Sthotraani"
x:Class="Sthotraani.Views.GodsPage" Title="Sthotraani" x:Name="pgGod" >
<ContentPage.Resources>
<ResourceDictionary>
<converters:ItemTappedEventArgsConverter x:Key="ItemTappedConverter" />
<converters:BoolToImageConverter x:Key="booltoimage" />
<converters:FileToImageConverter x:Key="FtoIConverter" />
<converters:BoolToHeightConverter x:Key="BoolToHeight" />
<converters:InvertBooleanConverter x:Key="boolConvert"/>
</ResourceDictionary>
</ContentPage.Resources>
<Grid HorizontalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<Grid x:Name="gMain" Grid.Row="0" Grid.Column="0" HorizontalOptions="FillAndExpand">
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="{Binding ShowAd, Converter={StaticResource BoolToHeight},ConverterParameter=5|absolute}" />
<RowDefinition Height="{Binding ShowAd,Converter={StaticResource BoolToHeight},ConverterParameter=5|auto}" />
<RowDefinition Height="5" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto"/>
</Grid.ColumnDefinitions>
<StackLayout x:Name="slMain" Grid.Row="0" Grid.Column="0" HorizontalOptions="FillAndExpand" MinimumWidthRequest="1000" >
<StackLayout BackgroundColor="#009688" Padding="5" IsVisible="{Binding IsSearchVisisble}" Orientation="Horizontal" >
<Entry x:Name="txtSearch" Text="{Binding SearchTerm}" Placeholder="Enter sthotram name" PlaceholderColor="Gray" FontSize="Micro" TextColor="Black" BackgroundColor="White" HorizontalOptions="FillAndExpand" />
</StackLayout>
<BoxView HeightRequest="5" BackgroundColor="White" IsVisible="{Binding IsSearchVisisble, Converter={StaticResource boolConvert}}" />
<controls:CarouselView ItemsSource="{Binding Gods}"
x:Name="cvGods"
SelectedItem="{Binding SelectedGod}"
BackgroundColor="White"
IsVisible="{Binding IsSearchVisisble, Converter={StaticResource boolConvert}}" >
<controls:CarouselView.ItemTemplate>
<DataTemplate>
<StackLayout Padding="5,0,5,0" >
<StackLayout VerticalOptions="FillAndExpand">
<StackLayout.Triggers>
<DataTrigger TargetType="StackLayout" Binding="{Binding IsSelected}" Value="true">
<Setter Property="BackgroundColor" Value="#B2DFDB"/>
</DataTrigger>
<DataTrigger TargetType="StackLayout" Binding="{Binding IsSelected}" Value="false">
<Setter Property="BackgroundColor" Value="#FFFFFF"/>
</DataTrigger>
</StackLayout.Triggers>
<Image Source="{Binding ImageName,Converter={StaticResource FtoIConverter}}" HorizontalOptions="Center" VerticalOptions="Center" />
</StackLayout>
<Label Text="{Binding Name}"
FontSize="Micro"
TextColor="Black"
HorizontalTextAlignment="Center" />
</StackLayout>
</DataTemplate>
</controls:CarouselView.ItemTemplate>
</controls:CarouselView>
</StackLayout>
<ContentView
Grid.Row="0"
Grid.Column="0"
VerticalOptions="Fill"
HorizontalOptions="Fill"
IsVisible="{Binding IsBusy}"
BackgroundColor="#22009485"
Padding="10, 0">
<ActivityIndicator VerticalOptions="Center"
HorizontalOptions="CenterAndExpand"
IsVisible="{Binding IsBusy}"
IsRunning="{Binding IsBusy}"
Color="#F98F1C" />
</ContentView>
<BoxView BackgroundColor="Red" x:Name="bvTop"
HorizontalOptions="FillAndExpand"
HeightRequest="5"
Grid.Row="1" Grid.Column="0"></BoxView>
<views:AdMobView WidthRequest="320"
HeightRequest="50"
x:Name="amvAds"
HorizontalOptions="CenterAndExpand"
Grid.Row="2"
Grid.Column="0"/>
<BoxView BackgroundColor="#009688"
x:Name="bvBottom"
HorizontalOptions="FillAndExpand"
HeightRequest="5"
Grid.Row="3"
Grid.Column="0"></BoxView>
<ListView x:Name="lvSthotras"
VerticalOptions="Start"
SeparatorVisibility="None"
ItemsSource="{Binding Sthotraas}"
HasUnevenRows="True"
HorizontalOptions="FillAndExpand"
CachingStrategy="RecycleElement"
SelectedItem="{Binding SelectedSthotram}"
Grid.Row="4"
Grid.Column="0">
<ListView.Behaviors>
<behaviors:ListViewSelectedItemBehavior Command="{Binding CmdListItemTapped}" Converter="{StaticResource ItemTappedConverter}" />
</ListView.Behaviors>
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<ViewCell.View>
<StackLayout>
<StackLayout Padding="10" Orientation="Horizontal">
<Image HorizontalOptions="Start" Source="{Binding IsFavorite,Converter={StaticResource booltoimage},ConverterParameter=pickedstar.png|star.png}" VerticalOptions="CenterAndExpand" >
<Image.GestureRecognizers>
<TapGestureRecognizer Command="{Binding Path=BindingContext.CmdFavoriteTapped, Source={x:Reference pgGod}}" CommandParameter="{Binding SthotraID}" />
</Image.GestureRecognizers>
</Image>
<Label Text="{Binding Name}" HorizontalOptions="StartAndExpand" VerticalOptions="CenterAndExpand" FontSize="Small" />
</StackLayout>
<BoxView BackgroundColor="#009688"
HeightRequest="1"
HorizontalOptions="FillAndExpand" />
</StackLayout>
</ViewCell.View>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<ContentView Grid.Row="4"
Grid.Column="0"
VerticalOptions="Fill"
HorizontalOptions="Fill"
IsVisible="{Binding IsBusy}"
BackgroundColor="#22009485"
Padding="10, 0">
<ActivityIndicator VerticalOptions="Center"
HorizontalOptions="CenterAndExpand"
IsVisible="{Binding IsBusy}"
IsRunning="{Binding IsBusy}"
Color="#F98F1C" />
</ContentView>
</Grid>
<StackLayout VerticalOptions="FillAndExpand" HorizontalOptions="FillAndExpand" Grid.Row="0" Grid.Column="0" IsVisible="{Binding IsOffline}" BackgroundColor="#009688">
<StackLayout VerticalOptions="CenterAndExpand" HorizontalOptions="Fill" Spacing="20" Padding="25">
<Label FontSize="Large" TextColor="White" >It seems you are not connected to internet, please check your network settings and click retry</Label>
<Button Text="Retry" Command="{Binding CmdRetryNetwork}" Style="{StaticResource btn}"/>
</StackLayout>
</StackLayout>
</Grid>
<ContentPage.ToolbarItems>
<ToolbarItem Text="Search" Command="{Binding ToggleSearchCmd}" Icon="{Binding IsSearchVisisble,Converter={StaticResource booltoimage},ConverterParameter=closeicon.png|SearchIcon.png}" Order="Primary" Priority="1" >
</ToolbarItem>
</ContentPage.ToolbarItems>
</views:BasePage>
以下是我展示的部分隐藏一些控件
<StackLayout x:Name="slMain" Grid.Row="0" Grid.Column="0" HorizontalOptions="FillAndExpand" MinimumWidthRequest="1000" >
<StackLayout BackgroundColor="#009688" Padding="5" IsVisible="{Binding IsSearchVisisble}" Orientation="Horizontal" >
<Entry x:Name="txtSearch" Text="{Binding SearchTerm}" Placeholder="Enter sthotram name" PlaceholderColor="Gray" FontSize="Micro" TextColor="Black" BackgroundColor="White" HorizontalOptions="FillAndExpand" />
</StackLayout>
<BoxView HeightRequest="5" BackgroundColor="White" IsVisible="{Binding IsSearchVisisble, Converter={StaticResource boolConvert}}" />
<controls:CarouselView ItemsSource="{Binding Gods}"
x:Name="cvGods"
SelectedItem="{Binding SelectedGod}"
BackgroundColor="White"
IsVisible="{Binding IsSearchVisisble, Converter={StaticResource boolConvert}}" >
<controls:CarouselView.ItemTemplate>
<DataTemplate>
<StackLayout Padding="5,0,5,0" >
<StackLayout VerticalOptions="FillAndExpand">
<StackLayout.Triggers>
<DataTrigger TargetType="StackLayout" Binding="{Binding IsSelected}" Value="true">
<Setter Property="BackgroundColor" Value="#B2DFDB"/>
</DataTrigger>
<DataTrigger TargetType="StackLayout" Binding="{Binding IsSelected}" Value="false">
<Setter Property="BackgroundColor" Value="#FFFFFF"/>
</DataTrigger>
</StackLayout.Triggers>
<Image Source="{Binding ImageName,Converter={StaticResource FtoIConverter}}" HorizontalOptions="Center" VerticalOptions="Center" />
</StackLayout>
<Label Text="{Binding Name}"
FontSize="Micro"
TextColor="Black"
HorizontalTextAlignment="Center" />
</StackLayout>
</DataTemplate>
</controls:CarouselView.ItemTemplate>
</controls:CarouselView>
</StackLayout>
每当我将carouselview隐藏在listview上方时，只会填充屏幕的一半。所有控件都有HorizantalOptions =＆＃34; FillAndExpand＆＃34;不知道我做错了什么。以下链接视频将向您显示行为
这是设备方向垂直时，一切正常
这是设备是水平的，这是当listview行为怪异的时候。
请帮助我。谢谢