AccountService.java

package com.alorma.github.account;

import android.accounts.AbstractAccountAuthenticator;
import android.accounts.Account;
import android.accounts.AccountAuthenticatorResponse;
import android.accounts.AccountManager;
import android.accounts.NetworkErrorException;
import android.app.Service;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.os.IBinder;
import com.alorma.github.ui.activity.WelcomeActivity;

/**
 * Created by Bernat on 27/03/2015.
 */
public class AccountService extends Service {

  private static AccountAuthenticatorImpl accountAuthenticator;

  @Override
  public IBinder onBind(Intent intent) {
    IBinder ret = null;

    if (intent.getAction().equals(AccountManager.ACTION_AUTHENTICATOR_INTENT)) {
      ret = getAuthenticator().getIBinder();
    }

    return ret;
  }

  private AccountAuthenticatorImpl getAuthenticator() {
    if (accountAuthenticator == null) {
      accountAuthenticator = new AccountAuthenticatorImpl(this);
    }
    return accountAuthenticator;
  }

  private static class AccountAuthenticatorImpl extends AbstractAccountAuthenticator {

    private Context context;

    public AccountAuthenticatorImpl(Context context) {
      super(context);
      this.context = context;
    }

    @Override
    public Bundle editProperties(AccountAuthenticatorResponse accountAuthenticatorResponse,
        String s) {
      return null;
    }

    @Override
    public Bundle addAccount(AccountAuthenticatorResponse response, String accountType,
        String authTokenType, String[] strings, Bundle bundle) throws NetworkErrorException {
      Bundle reply = new Bundle();
      Intent intent = new Intent(context, WelcomeActivity.class);
      intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
      reply.putParcelable(AccountManager.KEY_INTENT, intent);

      return reply;
    }

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

    @Override
    public Bundle getAuthToken(AccountAuthenticatorResponse response, Account account,
        String authTokenType, Bundle bundle) throws NetworkErrorException {
      Bundle reply = new Bundle();
      Intent intent = new Intent(context, WelcomeActivity.class);
      intent.putExtra(AccountManager.KEY_ACCOUNT_AUTHENTICATOR_RESPONSE, response);
      reply.putParcelable(AccountManager.KEY_INTENT, intent);

      return reply;
    }

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

    @Override
    public Bundle updateCredentials(AccountAuthenticatorResponse accountAuthenticatorResponse,
        Account account, String s, Bundle bundle) throws NetworkErrorException {
      return null;
    }

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