Port of vk-ios-sdk for Flutter

A Flutter plugin for using the native iOS VK SDK.

This is not an official repository! Here you can find platform native implemetations.

Platform support

only for iOS >= 8.0
if you need Android support, use flutter_vk_login

Installation

Add this to your package's pubspec.yaml file:

dependencies:
  flutter_vk_sdk:
    git:
      url: git@github.com:Stmol/flutter_vk_sdk.git
      ref: 0.1.1

And then install it:

flutter packages get

Import lib in your Dart code:

import 'package:flutter_vk_sdk/flutter_vk_sdk.dart';

After that, you need to create VK App and configure schema of your application. Read how-to in official vk-ios-sdk documentation.

Simple example

First, you should try to initialize SDK:

import 'package:flutter_vk_sdk/flutter_vk_sdk.dart';

const String APP_ID = '12345';
const String API_VERSION = '5.90';

void main() async {
  try {
    final vkSdk = await VKSdk.initialize(appId: APP_ID, apiVersion: API_VERSION);

    runApp(MyApp());
  } on VKSdkException catch (error) {
    print(error.message);
  }
}

Second, you should check if user is logged in alredy:

final List<String> scopes = [
  VKPermission.FRIENDS,
  VKPermission.PHOTOS,
  VKPermission.OFFLINE,
];

vkSdk.wakeUpSession(scopes).then((result) async {
  if (result.state == VKAuthorizationState.Authorized) {
    final accessToken = await vkSdk.accessToken();
    print(accessToken.localUser?.id);
  }
});

If they are not, handle any button tap and start an authorization flow:

void onLoginButtonPressed() async {
  final isLoggedIn = await vkSdk.isLoggedIn();
  if (isLoggedIn) {
    return;
  }

  try {
    await vkSdk.authorize(scopes, isSafariDisabled: true);
  } on VKSdkException catch (error) {
    print(error.message);
  }
}

tip: You probably should not using redirection to Safari. In that case your app may be rejected by Apple review team. To avoid redirection set argument isSafariDisabled to true

Next, subscribe to one of a stream and listen a result of authorization:

vkSdk.authorizationStateUpdated.listen((result) {
  if (result.state == VKAuthorizationState.Authorized) {
    print(result.token);
    print(result.user?.id);
  }
});

You also can use SDK's streams in the StreamBuilder widget.

Finally, you can use http Dart library to call VK API:

final token = await vkSdk.accessToken();
if (token == null || token.accessToken == null) {
  throw 'Access token is empty';
}

if (token == null || token.localUser?.id == null) {
  throw 'User ID not defined';
}

final apiUrl =
    'https://api.vk.com/method/users.get?user_ids=${token.localUser.id}&fields=bdate&access_token=${token.accessToken}&v=$API_VERSION';

final response = await http.get(apiUrl);
print(response.statusCode);
print(response.body);

The complete example you can find in /example folder. Before you run it, do the search cmd+shift+f with INSERT_HERE_YOUR_APP_ID query string.

Goals and status

Goals

implement full API of VK SDK
support Android
add tests

Status

Currently project is under development. But you can use it for user authorization flow (see /example folder).
I will upload this plugin to pub.dartlang.org after I add the implementation of VKRequest class

Author

Developed by Yury Smidovich

License

See the LICENSE file

Stmol / flutter_vk_sdk