issue with Andriod 11 and file tranfer

Question

issue with Andriod 11 and file tranfer

rick ruhl 61

Visual Studio 2022. 17.1.4
Xamarin Forms 5.0.0.2337
community toolkit 2.01

  byte[] byteResponse = null;
             Constants.RestUrl = "https://collage.exteres.com/vwalk/procPIP.php?rooftop_id=" + Constants.rooftop_id + "&film_id=" + Constants.film_id + "&contact_id=" + Constants.Username;
            WebClient client = new WebClient();

            Uri uri = new Uri(Constants.RestUrl);

            Send.Text = "Sending.. please wait...";
       //     Send1.Text = "Sending.. please wait...";
            await DisplayAlert("Pathname before call, if this is blank, the filename is null", videobase64, "OK");
            string resultString;
            try
            {
                client.UploadFileAsync(uri, videobase64);
            }
            catch (Exception ex)
            {
                //resultStatus.Text = $"{ex.Message}\n{ex.StackTrace}";

          }

videobase64= /storage/emulated/0/Android/data/com.exteres.dealerpreviews/files/DCIM/VID_20220305_193059.mp4

So when we try to upload it will work on IOS but not on Andriod

We do get the filename, but no video file.

thoughts?

rick ruhl 61

BTW I get the path with this

 FileMediaSource file = e.Video.File;
            string videomedia;

               Record.Text = "Re-Record";
              //  cameraView.Shutter();
                videomedia = file.ToString();
                videobase64 = videomedia;
                videobase64 = videobase64.Replace("File: ", "");

It looks like the call is giving me the wrong path under andriod since it works under IOS

Rob Caplan - MSFT 6,037 Reputation points Microsoft Employee Moderator

2022-05-04T22:05:09.843+00:00
Please see When to use answers or comments in the Q&A FAQ.

Per the windows-subsystem-for-android tag this problem is specific to WSA. Can you confirm if that's the case or if you also see this on other Android emulators or physical devices?

A couple of things that probably aren't the cause but which are worth being aware of:

It looks like you don't have the latest updates to Visual Studio or Xamarin.

System.Net.WebClient is provided for backwards compatibility but isn't recommended for new code. See the Remarks in the WebClient docs to use System.Net.Http.HttpClient instead. HttpClient will give you more control of the process and can make it easier to narrow down the actual problem.

Along those lines, can you please clarify:

Where the problem occurs and what the exact symptom is?

Is there an error?

Are you able to load the file from that path directly in the app?

Have you captured a network trace to see if the video data is sent or if it never gets off of the local system?

From "We do get the filename, but no video file." I'm guessing that the call to UploadFileAsync returns without an error. There will be a WebException if there was an overt problem with the arguments, the source file path, or the connection. It won't catch syntactically correct but semantically wrong data.

Your answer

rick ruhl 61 Reputation points

2022-05-04T17:28:56.07+00:00

BTW I get the path with this

FileMediaSource file = e.Video.File; string videomedia; Record.Text = "Re-Record"; // cameraView.Shutter(); videomedia = file.ToString(); videobase64 = videomedia; videobase64 = videobase64.Replace("File: ", "");

It looks like the call is giving me the wrong path under andriod since it works under IOS
Rob Caplan - MSFT 6,037 Reputation points Microsoft Employee Moderator

2022-05-04T22:05:09.843+00:00

Please see When to use answers or comments in the Q&A FAQ.

Per the windows-subsystem-for-android tag this problem is specific to WSA. Can you confirm if that's the case or if you also see this on other Android emulators or physical devices?

A couple of things that probably aren't the cause but which are worth being aware of:

It looks like you don't have the latest updates to Visual Studio or Xamarin.

System.Net.WebClient is provided for backwards compatibility but isn't recommended for new code. See the Remarks in the WebClient docs to use System.Net.Http.HttpClient instead. HttpClient will give you more control of the process and can make it easier to narrow down the actual problem.

Along those lines, can you please clarify:

Where the problem occurs and what the exact symptom is?

Is there an error?

Are you able to load the file from that path directly in the app?

Have you captured a network trace to see if the video data is sent or if it never gets off of the local system?

From "We do get the filename, but no video file." I'm guessing that the call to UploadFileAsync returns without an error. There will be a WebException if there was an overt problem with the arguments, the source file path, or the connection. It won't catch syntactically correct but semantically wrong data.

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issue with Andriod 11 and file tranfer

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