local_account_manager

Native Account Manager

Result GIF

Getting Started

Installation

Add package to your dependencies in pubspec.yaml:

dependencies:
  local_account_manager: ^0.0.1

And call flutter pub get to download new dependencies

Using

To import module add import 'package:local_account_manager/local_account_manager.dart'; at the import block in your code.

At this moment plugin can work with Android OS API 27+ only. To allow plugin to manage accounts you need to add few native code for Android:

1. Create xml/authenticator.xml resource in your Android project folder with next content:

<?xml version="1.0" encoding="utf-8"?>
<account-authenticator
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:accountType="<YOUR_ACCOUNT_TYPE>" // com.google
     android:icon="<YOUR_ICON_48DP>"
     android:smallIcon="<YOUR_ICON_24DP>"
     android:label="<YOUR_ACCOUNT_NAME>"/>

2. Implement AbstractAccountAuthenticator stub:

Authenticator.java

public class Authenticator extends AbstractAccountAuthenticator {

    public Authenticator(Context context) {
        super(context);
    }

    @Override
    public Bundle editProperties(AccountAuthenticatorResponse response, String accountType) {
        return null;
    }

    @Override
    public Bundle addAccount(
        AccountAuthenticatorResponse response, String accountType, 
        String authTokenType, String[] requiredFeatures, Bundle options
    ) throws NetworkErrorException {
        return null;
    }

    @Override
    public Bundle confirmCredentials(AccountAuthenticatorResponse response, Account account, 
        Bundle options) throws NetworkErrorException {
        return null;
    }

    @Override
    public Bundle getAuthToken(AccountAuthenticatorResponse response, Account account, 
        String authTokenType, Bundle options) throws NetworkErrorException {
        return null;
    }

    @Override
    public String getAuthTokenLabel(String authTokenType) {
        return null;
    }

    @Override
    public Bundle updateCredentials(AccountAuthenticatorResponse response, Account account, 
        String authTokenType, Bundle options) throws NetworkErrorException {
        return null;
    }

    @Override
    public Bundle hasFeatures(AccountAuthenticatorResponse response, Account account, 
        String[] features) throws NetworkErrorException {
        return null;
    }
}

AuthenticatorService.java

public class AuthenticatorService extends Service {
    @Nullable
    @Override
    public IBinder onBind(Intent intent) {
        Authenticator authenticator = new Authenticator(this);
        return authenticator.getIBinder();
    }
}

3. Update AndroidManifest.xml:

Add required permissions, i.e.:

<uses-permission android:name="android.permission.AUTHENTICATE_ACCOUNTS"/>
<uses-permission android:name="android.permission.GET_ACCOUNTS"/>
<uses-permission android:name="android.permission.MANAGE_ACCOUNTS"/>
<uses-permission android:name="android.permission.WRITE_SYNC_SETTINGS" />

And register AuthenticatorService:

<service android:name=".AuthenticatorService" android:exported="false">
    <intent-filter>
        <action android:name="android.accounts.AccountAuthenticator"/>
    </intent-filter>
    <meta-data
        android:name="android.accounts.AccountAuthenticator"
        android:resource="@xml/authenticator"/>
</service>

On Android devices you also need to request permissions at the runtime. We advice to use permission_handler

WARNING: iOS doesn't provide AccountManager entity, our plugin emulates it using UserDefaults.standard to store all data.