Xamarin：使用NuGet FFImageLoading.Svg.Forms

Question

我对Xamarin是全新的，现在想在我的xamarin.forms应用程序中使用vectorgrahpics。 为了做到这一点，我右击的解决方案>疥癣的NuGet包解决方案>安装Xamarin.FFImageLoading.Svg.Forms

然后我用这个代码：

<?xml version="1.0" encoding="utf-8" ?> 
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      x:Class="SMSIP_Xamarin.FileBrowser" 
      Title="File Browser"> 
    <ListView x:Name="listView" RowHeight="60" > 
     <ListView.ItemTemplate> 
      <DataTemplate> 
       <ViewCell> 
        <ViewCell.View > 
         <StackLayout Orientation="Horizontal" Margin="8,8,8,8"> 
          <ffimageloadingsvg:SvgCachedImage WidthRequest="50" HeightRequest="50" Source="{Binding IconSource}"/> 
          <StackLayout Orientation="Vertical" HorizontalOptions="StartAndExpand" Margin="6,0,0,0"> 
           <Label Text="{Binding FileName}" HorizontalOptions="FillAndExpand" Margin="0,0,0,-5" FontSize="18" TextColor="Black"/> 
           <Label Text="{Binding Size}" FontSize="12" TextColor="Gray" Margin="3,0,0,0"/> 
          </StackLayout> 
          <Switch IsToggled="{Binding DoSynchronization}"/> 
         </StackLayout> 
        </ViewCell.View> 
       </ViewCell> 
      </DataTemplate> 
     </ListView.ItemTemplate> 
    </ListView> 
</ContentPage> 

不，我得到的错误

“ffimageloadingsvg”是一个未声明的前缀。

我在做什么错？

Answer 1

你需要在页面的顶部添加空间声明ffimageloadingsvg：

xmlns:ffimageloadingsvg="clr-namespace:FFImageLoading.Svg.Forms;assembly=FFImageLoading.Svg.Forms" 

所以它看起来像这样：

<?xml version="1.0" encoding="utf-8" ?> 
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms" 
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" 
      xmlns:ffimageloadingsvg="clr-namespace:FFImageLoading.Svg.Forms;assembly=FFImageLoading.Svg.Forms" 
      x:Class="SMSIP_Xamarin.FileBrowser" 
      Title="File Browser"> 
    <ListView x:Name="listView" RowHeight="60" > 
     <ListView.ItemTemplate> 
      <DataTemplate> 
       <ViewCell> 
        <ViewCell.View > 
         <StackLayout Orientation="Horizontal" Margin="8,8,8,8"> 
          <ffimageloadingsvg:SvgCachedImage WidthRequest="50" HeightRequest="50" Source="{Binding IconSource}"/> 
          <StackLayout Orientation="Vertical" HorizontalOptions="StartAndExpand" Margin="6,0,0,0"> 
           <Label Text="{Binding FileName}" HorizontalOptions="FillAndExpand" Margin="0,0,0,-5" FontSize="18" TextColor="Black"/> 
           <Label Text="{Binding Size}" FontSize="12" TextColor="Gray" Margin="3,0,0,0"/> 
          </StackLayout> 
          <Switch IsToggled="{Binding DoSynchronization}"/> 
         </StackLayout> 
        </ViewCell.View> 
       </ViewCell> 
      </DataTemplate> 
     </ListView.ItemTemplate> 
    </ListView> 
</ContentPage>