ListView中的空间超出了我的需要 [英] There is more space than I need in ListView
问题描述
我正在使用StackLayout和ListView来显示视图的某些部分，但是ListView占用了比我所需更多的空间，并且在列表的最后一行和配置文件延续之间留有空白.看来我的ListView的行数多于实际列表的长度，或者它的高度是固定的，我不知道...这是我的XAML:
<ScrollView>
<StackLayout Orientation="Vertical" Spacing="10">
<Label Text="{Binding Establishment.Name}" TextColor="Black" HorizontalOptions="StartAndExpand" Style="{DynamicResource TitleStyle}" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.Category.Name, StringFormat='Categoria: {0}'}" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.Description}" TextColor="Black" HorizontalOptions="StartAndExpand" LineBreakMode="WordWrap" XAlign="Start"/>
<Label Text="Contatos" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<ListView ItemsSource="{Binding Establishment.Contacts}" VerticalOptions="Start" HasUnevenRows="True">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding Value}" Detail="{Binding StringType}" DetailColor="Gray"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<Label Text="Endereço" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.FullAddress}" TextColor="Black" HorizontalOptions="StartAndExpand" />
<Button Text="Ver no mapa"/>
</StackLayout>
</ScrollView>
我该如何解决?我看到有人在使用HasUnevenRows="True"，但对我却无效.
谢谢你们，但没有任何帮助.我自己认为的解决方案当然不是最好的，但是对我有用.
在XAML上，我像这样留下了一个空的StackLayout:
<StackLayout x:Name="ContactsList" Orientation="Vertical" Spacing="10" Padding="8,0">
<!-- Empty because it will be filled in code mode -->
</StackLayout>
然后，在.cs文件中，我在InitializeComponent()方法之后调用了此方法:
private void setUpContacts(Establishment establishment)
{
foreach(Contact contact in establishment.Contacts)
{
StackLayout row = new StackLayout
{
Orientation = StackOrientation.Vertical
};
row.Children.Add(new Label
{
TextColor = Color.Gray,
Text = string.Format("{0}:", contact.StringType)
});
row.Children.Add(new Label
{
TextColor = Color.Black,
FontAttributes = FontAttributes.Bold,
Text = contact.Value,
});
row.GestureRecognizers.Add(new TapGestureRecognizer {
Command = new Command(() => OnContactTapped(row, contact))
});
ContactsList.Children.Add(row);
}
}
之所以这样做，是因为列表不是真正的ListView，因为我不需要直接在列表中滚动功能，所以它只是视图的另一部分.我认为它不会造成任何性能问题，因为它将包含少量项目(最多5个).我将此标记为可以帮助其他人解决此问题的正确答案.
请，如果这是一种不适用于其他人的解决方案，请告诉我，我将找到另一种方法来解决此问题.
I'm using StackLayout and ListView to show some part of a view, but the ListView takes more space than I need, and leaves a blank space between the last row of the list and the profile continuation. It seems my ListView has more lines than the real list's length, or it has a fixed Height, I don't know... Here's my XAML:
<ScrollView>
<StackLayout Orientation="Vertical" Spacing="10">
<Label Text="{Binding Establishment.Name}" TextColor="Black" HorizontalOptions="StartAndExpand" Style="{DynamicResource TitleStyle}" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.Category.Name, StringFormat='Categoria: {0}'}" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.Description}" TextColor="Black" HorizontalOptions="StartAndExpand" LineBreakMode="WordWrap" XAlign="Start"/>
<Label Text="Contatos" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<ListView ItemsSource="{Binding Establishment.Contacts}" VerticalOptions="Start" HasUnevenRows="True">
<ListView.ItemTemplate>
<DataTemplate>
<TextCell Text="{Binding Value}" Detail="{Binding StringType}" DetailColor="Gray"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
<Label Text="Endereço" TextColor="Black" HorizontalOptions="StartAndExpand" FontAttributes="Bold"/>
<Label Text="{Binding Establishment.FullAddress}" TextColor="Black" HorizontalOptions="StartAndExpand" />
<Button Text="Ver no mapa"/>
</StackLayout>
</ScrollView>
How can I fix it? I saw people using HasUnevenRows="True" but it didn't work to me.
Thank you guys, but nothing worked for me. The solution that I thought by myself surely isn't the best one, but it works for me.....
At the XAML I left an empty StackLayout like this:
<StackLayout x:Name="ContactsList" Orientation="Vertical" Spacing="10" Padding="8,0">
<!-- Empty because it will be filled in code mode -->
</StackLayout>
And then, in the .cs file, I called this method after InitializeComponent() method:
private void setUpContacts(Establishment establishment)
{
foreach(Contact contact in establishment.Contacts)
{
StackLayout row = new StackLayout
{
Orientation = StackOrientation.Vertical
};
row.Children.Add(new Label
{
TextColor = Color.Gray,
Text = string.Format("{0}:", contact.StringType)
});
row.Children.Add(new Label
{
TextColor = Color.Black,
FontAttributes = FontAttributes.Bold,
Text = contact.Value,
});
row.GestureRecognizers.Add(new TapGestureRecognizer {
Command = new Command(() => OnContactTapped(row, contact))
});
ContactsList.Children.Add(row);
}
}
I made this because the list isn't a really ListView, since I don't need scrolling functions directly in the list, it is just another part of the view. It won't cause any performance problem, I think, because it will have a small number of items (maximum 5). I'm marking this one as the correct answer to help others with this problem.
Please, if this is a solution that does not work for others, let me know and I'll find another way to do this.
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