从 firebase 存储中检索图像并在应用程序中查看图像 [英] retrieve image from firebase storage and view the image in the app

问题描述

我使用 firebase 存储来存储用户的个人资料图像

im using firebase storage to store a profile image of the users

上传效果很好，

当我想将图像作为图像源查看时，我使用以下代码:

when i want to view the image as an imagesource i use this code:

public async Task<string> LoadImages()
        {
            var stroageImage = await new FirebaseStorage("foodymood-ba7aa.appspot.com")
                .Child("Users/" + Settings.LastUserID)
                .Child("ProfileImage.jpg")
                .GetDownloadUrlAsync();
            string imgurl = stroageImage;
            return imgurl;
        }

它返回下载网址:

"https://firebasestorage.googleapis.com/v0/b/foodymood-ba7aa.appspot.com/o/Users%2F0BCAruzb4xP1chAeaLhmnw2fampTue5令牌=b69e1de0-1bac-4ceb-ad7d-0c3b1d313a2c"

现在我不知道如何使用这个网址来查看图片..

now i dont know how to use this url for viewing the image..

推荐答案

用这个代码修复:

 public async Task<ImageSource> LoadImages()
        {
            var webClient = new WebClient();
            var stroageImage = await new FirebaseStorage("foodymood-ba7aa.appspot.com")
                .Child("Users/" + Settings.LastUserID)
                .Child("ProfileImage.jpg")
                .GetDownloadUrlAsync();
            string imgurl = stroageImage;
            byte[] imgBytes = webClient.DownloadData(imgurl);
            //string img = Convert.ToBase64String(imgBytes);
            var img = ImageSource.FromStream(() => new MemoryStream(imgBytes));
            return img;
        }

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