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我正在使用 FFImageLoading 但我调用此 SDK 的视图显然没有显示但正在加载。这是堆栈跟踪：

01-25 13:37:14.393 I/art (9376): 在先前失败的类 java.lang.Class 上拒绝重新初始化

01-25 13:37:14.394 I/art (9376): Rejecting re-init on previous-failed class java.lang.Class

01-25 13:37:14.394 I/art (9376): Rejecting re-init on previous-failed class java.lang.Class

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="App1.Views.MisActivos.PhotoActivo"
             xmlns:ffimageloading="clr-namespace:FFImageLoading.Forms;assembly=FFImageLoading.Forms">
    <ContentPage.Content>
        <StackLayout Orientation = "Vertical" VerticalOptions = "FillAndExpand" BackgroundColor = "White" Spacing="0">
            <StackLayout Orientation="Horizontal" BackgroundColor="Gray" HorizontalOptions="FillAndExpand" >
                <Label x:Name="TxtAd" Text="" TextColor="White" FontSize="20" HorizontalTextAlignment="Center"></Label>
                <Button x:Name="btn" BackgroundColor="Gray" BorderColor="Gray" Text="X" FontSize="8" WidthRequest="40" HeightRequest="40" Clicked="Back_Clicked" HorizontalOptions="EndAndExpand"></Button>
             </StackLayout>
            <StackLayout Orientation="Horizontal" BackgroundColor="White" HorizontalOptions="Center" VerticalOptions="Center"> 
                <ffimageloading:CachedImage HorizontalOptions="Center" VerticalOptions="Center"
                            WidthRequest="300" HeightRequest="300"
                            DownsampleToViewSize="true"
                            Source = "Photo.jpg"
                            x:Name="PhotoImage">
                </ffimageloading:CachedImage>
             </StackLayout> 
        <StackLayout Orientation="Vertical" HorizontalOptions="FillAndExpand" BackgroundColor="White">
                <Button x:Name="CameraButton" Image="Photo1.png" HorizontalOptions="FillAndExpand" />
                <Button x:Name="BtnVerifica" HeightRequest="60" BackgroundColor="Gray" Image="Verificar.png" Clicked="BtnOk_Click" HorizontalOptions="FillAndExpand" IsVisible="false"></Button>
            </StackLayout>
        </StackLayout>
    </ContentPage.Content>
</ContentPage>

我用这个来称呼它this.Navigation.PushModalAsync(new PhotoActivo(Activo, "ACT"));，但不显示任何东西。

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