Im trying to make a class and method to do HTTP requests using Dio

class appCommunicate {

  appGetRequest(String url, {headers = ''})
  async {

    if (headers.length > 0) {

      _res =  await dio.get(url, options: Options(headers: headers));
    }
    else
    {
      _res = await dio.get(url);

    }


    return _res;

  }

}

And then when I try to invoke this class as follows:

          final communicate = appCommunicate();
          final response = await communicate.appGetRequest(_myUrl);

Nothing happens, no communication and the app just stops there

CodePudding user response：

dio.get() is venerable for exception. You must add dio.get code in try catch block to handle exception.

appGetRequest(String url, {headers = ''}) async {
    try {
        if (headers.length > 0) {
            _res =  await dio.get(url, options: Options(headers: headers));
        }
        else
        {
            _res = await dio.get(url);
        }
        return _res;
    }
    catch (e) {
        print(e);
    }
}

CodePudding user response：

I made a mistake, the class and method as posted above are fine and work fine.

I had another piece of code that was causing the error. Stupid me!

CodePudding user response：

As it is a async type function its return type should be Future like this-

class appCommunicate {

Future<Response> appGetRequest(String url, {headers = ''})
async {

if (headers.length > 0) {

  _res =  await dio.get(url, options: Options(headers: headers));
}
else
{
  _res = await dio.get(url);

}


return _res;

 }

}