Complete Flutter Application with Riverpod & Freezed + Dio for API REST

Xtenso

Last update: Dec 26, 2022

Related tags

Templates flutter-crypto-app

Overview

Flutter Crypto APP

Complete Flutter Application with Riverpod & Freezed + Dio for API REST.

Features

API REST (CryptoWatch)
Linear Graph View (Hour, Day, Week, etc)
OHLC Graph
Search
Light / Dark Theme
Multi Language
Exchange Selection
Favorite Pair

Stack

Flutter 2.2.0 (Null Safety)
Riverpod + Hooks
Freezed
Dio

Testing

Unit Testing (flutter_test)
Integration Testing (integration_test)
Mock Data (http_mock_adapter)
Github Actions (iOS & Android Integration Test)

Screenshots

Home	Details	Settings

Setup project

Download project

git clone https://github.com/salvadordeveloper/flutter-crypto-app

Get flutter dependencies

flutter pub get

You need to create an account at https://cryptowat.ch/ to get a personal API KEY

Rename the env.example file to .env and put there you API KEY

API_KEY={CryptoWatch_KEY}

Run the app

flutter run

If you have any error with generated files try to run this

flutter pub run build_runner build --delete-conflicting-outputs

Testing

Unit Test

flutter test

Integration Test

flutter drive --driver=test_driver/integration_test.dart --target=integration_test/main_test.dart

Resources

Flutter Docs

Riverpod Docs

Cryptowatch Docs

Licence

MIT License

Copyright (c) 2021 Salvador Valverde

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.

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Comments

Exception has occurred. DataException (errorBadRequest)

Hello! I tried to run your code but it gives me the following error:


Exception has occurred.
DataException (errorBadRequest)

The error occurs in this part of the code:


final favoritePairProvider = FutureProvider<FavoritePair>((ref) async {
  final cancelToken = CancelToken();
  ref.onDispose(() => cancelToken.cancel());

  final settings = ref.watch(cryptoSettings);
  String exchangeName = settings.maybeWhen(
      data: (details) => details.favoriteExchange, orElse: () => "");
  String pairName = settings.maybeWhen(
      data: (details) => details.favoritePair, orElse: () => "");

  if (exchangeName.isEmpty || pairName.isEmpty) {
    throw DataException(message: LocaleKeys.errorSomethingWentWrong);
  }

  Pair pair = Pair(pair: pairName, exchange: exchangeName);
  try {
    PairSummary pairSummary = await ref
        .read(cryptoRepository)
        .getPairSummary(exchangeName, pairName, cancelToken: cancelToken);
    return FavoritePair(pair: pair, pairSummary: pairSummary);
  } on DataException catch (error) {
    if (error.message == LocaleKeys.errorRequestNotFound) {
      ref.read(cryptoSettings.notifier).verifyFavoritePair();
    }
    throw error;
  }
});

I also changed the .env-example file to .env and copied my gotten API private key like below into it:

API_KEY=ddTaK3jVw5fgdfgdgfdgfgfdgfdgfd

Do you know how can I fix it?

opened by Zohalmohal 0