postApi.dart

static Future<FacebookModel> getFbUserData(String fbtoken) async {
    //String url1 = "https://graph.facebook.com/${user_id}?fields=name,first_name,last_name,email,&access_token=${fbtoken}";
    String url =
        'https://graph.facebook.com/v8.0/me?fields=name,first_name,last_name,email&access_token=${fbtoken}';

    var request = new http.MultipartRequest("GET", Uri.parse(url));

    try {
      final response = await request.send().timeout(Duration(seconds: timeout));
      final respStr = await response.stream.bytesToString();
      print("----url---${url}");
      print("----respStr---${respStr}");
      final parsed = json.decode(respStr);
      FacebookModel fbModel = FacebookModel.fromJson(parsed);
      return fbModel;
    } catch (e) {
      print("----catch---${e.toString()}");
      //Utils.showToast(e.toString(), true);
      return null;
    }
  }