Azure 如何将图像下载到Xamarin.forms列表视图

我在列表视图中有一个图像url，点击列表视图后，图像应该下载到同一行。 如何在Xamarin.forms上实现？

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我从Azure blob中获得了图像

我建议使用Xamarin Forms Listview和SQL和blob存储查看这篇博客文章。他们基本上使用SQL存储Blob存储中的图像，使用以下代码：

public class AzureMediaStorageService : IMediaStorageService
{
    private CloudBlobContainer MediaContainer { get; set; }



    public void InitializeStorage(string settings = null)
    {
        if (MediaContainer != null)
            return;

        if (string.IsNullOrEmpty(settings))
            throw new ArgumentNullException(nameof(settings), "Azure Storage Media Service needs a connection string name as \"settings\" parameter");

        var storageAccount = CloudStorageAccount.Parse(ConfigurationManager.ConnectionStrings[settings].ConnectionString);
        var blobClient = storageAccount.CreateCloudBlobClient();

        MediaContainer = blobClient.GetContainerReference("medias");
        MediaContainer.CreateIfNotExists();
        MediaContainer.SetPermissions(new BlobContainerPermissions { PublicAccess = BlobContainerPublicAccessType.Blob });
    }


    public async Task<Uri> UploadBytesAsync(byte[] bytes, string uniqueId, MediaType mediaType)
    {
        var blockBlob = MediaContainer.GetBlockBlobReference(uniqueId);

        blockBlob.Properties.ContentType = mediaType == MediaType.Picture ? "image/jpeg" : "video/mp4";

        await blockBlob.UploadFromByteArrayAsync(bytes, 0, bytes.Length);

        return blockBlob.Uri;
    }

    public async Task<byte[]> DownloadBytesAsync(Uri uri)
    {
        using (var httpClient = new HttpClient())
        {
            var response = await httpClient.GetAsync(uri, HttpCompletionOption.ResponseContentRead);

            response.EnsureSuccessStatusCode();

            return await response.Content.ReadAsByteArrayAsync();
        }
    }

    public string GetSecureClientUploadUrl(string uniqueId, DateTimeOffset expirationDateTime)
    {
        if (expirationDateTime <= DateTimeOffset.Now)
            throw new ArgumentOutOfRangeException(nameof(expirationDateTime), expirationDateTime, null);

        var blob = MediaContainer.GetBlockBlobReference(uniqueId);

        var sasPolicy = new SharedAccessBlobPolicy
        {
            SharedAccessExpiryTime = expirationDateTime,
            Permissions = SharedAccessBlobPermissions.Create
        };


        return MediaContainer.Uri + blob.GetSharedAccessSignature(sasPolicy);
    }
}

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可以在这里找到博客帖子：

您可以添加更多详细信息，如屏幕截图或其他信息来帮助您吗？