Activityindicator 不适用于 FFImageLoading

Question

该代码适用于正常但不适用于 FFImageLoading。 ActivityIndicator 没有显示...我做错了什么？

    <ContentPage.Content>
    <StackLayout>
        <local:PinchPanContainer>
            <local:PinchPanContainer.Content HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
                <ffimageloading:CachedImage RetryCount="5" RetryDelay="1" CacheDuration="1" x:Name="MyImage" HorizontalOptions="Fill" VerticalOptions="CenterAndExpand" DownsampleToViewSize="False"></ffimageloading:CachedImage>
            </local:PinchPanContainer.Content>
        </local:PinchPanContainer>
        <ActivityIndicator BindingContext="{x:Reference MyImage}" IsRunning="{Binding CachedImage.IsLoading}"  IsVisible="{Binding CachedImage.IsLoading}"/>
    </StackLayout>
</ContentPage.Content>

Answer 1

您使用的绑定路径不正确，应该是IsLoading而不是CachedImage.IsLoading:

<StackLayout>
    <ffimageloading:CachedImage Source="http://img1.wikia.nocookie.net/__cb20101219155130/uncyclopedia/images/7/70/Facebooklogin.png" LoadingDelay="2000" RetryCount="5" RetryDelay="1" CacheDuration="1" x:Name="MyImage" HorizontalOptions="Fill" VerticalOptions="CenterAndExpand" DownsampleToViewSize="False"></ffimageloading:CachedImage>
    <ActivityIndicator BindingContext="{x:Reference MyImage}" Color="Red" IsRunning="{Binding IsLoading}"  IsVisible="{Binding IsLoading}"/>
</StackLayout>

参考：data-binding-basics

Activityindicator 不适用于 FFImageLoading

Activityindicator not working with FFImageLoading

xamarin

activity-indicator

ffimageloading