将图像插入firebase.storage后如何获取下载URL

Question

我可以将映像插入firebase.storage，但是上载时获得的下载链接与附加到映像的下载链接不同。

public void UploadImage()
{
    if (filePath != null)
        progressBar.Visibility = ViewStates.Visible;
    var images = storageRef.Child("profilePicture");
    images.PutFile(filePath);    
}

void IOnSuccessListener.OnSuccess(Java.Lang.Object result)
{
    var snapShot = (UploadTask.TaskSnapshot)result;
    var downloadURL = snapShot.DownloadUrl.Scheme
        + ":" + snapShot.DownloadUrl.SchemeSpecificPart;
}

UserData newUser = new UserData();
newUser.UserId = UserId;
newUser.Email = UserEmail;
newUser.FirstName = first.Text;
newUser.LastName = last.Text;
newUser.MobileNumber = phone.Text;
newUser.Userprofile = storageRef.DownloadUrl;

Answer 1

我可以共享本机Android和IOS代码以从Firebase上传的图像/文件获取URL，也许您可​​以从Xamarin那里获得一些帮助。

安卓：

Task<Uri> urlTask = uploadTask.continueWithTask(new Continuation<UploadTask.TaskSnapshot, Task<Uri>>() {
    @Override
    public Task<Uri> then(@NonNull Task<UploadTask.TaskSnapshot> task) throws Exception {
        if (!task.isSuccessful()) {
            throw task.getException();
        }

        // Continue with the task to get the download URL
        return fileRef.getDownloadUrl();
    }
}).addOnCompleteListener(new OnCompleteListener<Uri>() {
    @Override
    public void onComplete(@NonNull Task<Uri> task) {
        if (task.isSuccessful()) {
            Uri downloadUri = task.getResult();
            String stringUrl = downloadUri.toString(); // Image url


        } else {
            // Handle failures
            Log.e("oops","problem occurred");
        }
    }
});

IOS：

fileRef.downloadURL { (url, error) in
  guard let downloadURL = url else {
      // Uh-oh, an error occurred!
      print("Uh-oh, an error occurred! in url downloading")

      return
  }
  print("downloadurl: \(downloadURL.absoluteString)");

}