MVI - ExampleFragment

ExampleFragment

public class ExampleFragment extends Fragment implements ExampleView {
  @BindView(R.id.userData) TextView userData;
  @BindView(R.id.loadingView) View loadingView;
  @BindView(R.id.errorView) TextView errorView;
  @BindView(R.id.emptyView) View emptyView;
@Override public Observable<String> showUserDataIntent() {
    return "";
  }

  @Override public void render(ExampleViewState viewState) {
    if (viewState instanceof ExampleViewState.userData) {
      renderResult(((ExampleViewState.userData) viewState).getResult());
    } else if (viewState instanceof ExampleViewState.Loading) {
      renderLoading();
    } else if (viewState instanceof ExampleViewState.Error) {
      renderError();
    } else if (viewState instanceof ExampleViewState.isPullToRefresh) {
      renderPullToRefresh();
    }else {
      throw new IllegalArgumentException("Don't know how to render viewState " + viewState);
    }
  }

  private void renderResult(User user) {
    // set user data here
    loadingView.setVisibility(View.GONE);
    emptyView.setVisibility(View.GONE);
    errorView.setVisibility(View.GONE);
  }


  private void renderLoading() {
    
    // set loading view here
    loadingView.setVisibility(View.VISIBLE);
    errorView.setVisibility(View.GONE);
    emptyView.setVisibility(View.GONE);
  }

  private void renderError() {
    // set error view here
loadingView.setVisibility(View.GONE);
    errorView.setVisibility(View.VISIBLE);
    emptyView.setVisibility(View.GONE);
  }

  private void renderEmptyResult() {
     // set empty view here, it can be initialize state for init adapter or sth else.
    loadingView.setVisibility(View.GONE);
    errorView.setVisibility(View.GONE);
    emptyView.setVisibility(View.VISIBLE);
  }
}