用AccountManager、Reverfit和Dagger实现OAuth2

Question

我试图找出实现一个支持AccountManager.getAuthToken（）的OAuth2流的改型客户机的最佳方法。我跟着U2020

理想情况下，我希望有一个简单的注射器沿着这些线

public class ExampleFragment extends InjectionFragment {
  @Inject ApiDatabase database;

  @Override public void onActivityCreated(Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    subscribe(database.getSomeData(), ...);
  }
}

public final class ApiHeaders implements RequestInterceptor {
  ApiKeyProvider apiKeyProvider;

  @Inject
  public ApiHeaders(ApiKeyProvider apiKeyProvider) {
    this.apiKeyProvider = apiKeyProvider;
  }

  @Override
  public void intercept(RequestFacade request) {
    // How to handle exceptions from getAuthToken?
    request.addHeader("Authorization", "Bearer " + apiKeyProvider.getAuthKey());
  }
}

public class ApiKeyProvider {
  AccountManager accountManager;
  Activity activity;

  public ApiKeyProvider(Activity activity, AccountManager accountManager) {
    this.activity = activity;
    this.accountManager = accountManager;
  }

  public String getAuthKey() throws AccountsException, IOException {
    AccountManagerFuture accountManagerFuture = accountManager.getAuthTokenByFeatures(ACCOUNT_TYPE,
        AUTHTOKEN_TYPE, new String[0], activity, null, null, null, null);

    return accountManagerFuture.getResult().getString(KEY_AUTHTOKEN);
  }
}

Answer 1

结果有点冗长。希望这一要点包含所有相关文件