我无法从iOS上的ImageCached对象加载图像 .

我从 ALAsset 获得了一个资产库网址，但是当我创建ImageCached对象时，它会显示图像，结果显示找不到文件的错误 .

我从 (ALAsset)asset.AssetUrl.AbsoluteString 获取图片网址

这是初始化我的CachedObject的一些代码

CachedImage image = new CachedImage();
image.Source = url;
image.HeightRequest = heightRequest;
image.WidthRequest = widthRequest;
image.DownsampleWidth = downSample;
image.CacheDuration = TimeSpan.FromDays(30);
image.LoadingPlaceholder = "Images/loading_grey.png";
image.ErrorPlaceholder = "Images/placeholder.png";
image.Transformations = new System.Collections.Generic.List<ITransformation>() {
    new CropTransformation(1, image.Width / 2 - heightRequest, image.Height / 2 - widthRequest)
};
image.CacheType = FFImageLoading.Cache.CacheType.Disk;
image.GestureRecognizers.Add(new TapGestureRecognizer
{
    Command = new Command(() => {
        Navigation.PushModalAsync(new ViewImagePage(url));
    }),
    NumberOfTapsRequired = 1
});
return image;

从另一篇文章中，当我浏览我的图像时，我得到了一条跟踪

ImagesNames.Add(asset.DefaultRepresentation.Url.AbsoluteString);

但是图像路径只链接到不指向文件的asset.JPG
enter image description here

ios xamarin xamarin.ios ffimageloading