Question 281172 in Flutter Question posted in
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Flutter Web error : :Unsupported operation: Platform._version:

Greetings iam working on a flutter app( mobile + web + desktop)
my backend is asp.net core
when iam trying to call my API (on mobile and desktop) it works perfectly but when I am calling from the web (chrome) iam get this error

Unsupported operation: Platform._version

my question is it something related to flutter or asp.net core
i really did some research but none helped can someone help me in that

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2

Answers


  1. Chosen as BEST ANSWER
    0

    The all idea is to enable CORS on the web api here is what you need to do in Startup.cs Go to ConfigureServices and add this code

     services.AddCors(options =>
        {
            options.AddPolicy("AllowAll",
                builder => {
                    builder
                                        .AllowAnyHeader()
                                        .AllowAnyMethod()
                     .AllowAnyOrigin();
               });
        });

    now in the Configure method add this code

      app.UseCors("AllowAll");

    also in every controller you need to add [EnableCors] this worked for me


  2. 0

    The issue is most likely related to using dart:io which is not compatible with web.

    If you post the full stack trace we can get a better idea.

    Try using https://pub.dev/packages/universal_io instead or even better https://pub.dev/packages/dio

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