代码补充

UILoader 

public abstract class UILoader extends FrameLayout {

    private static final String TAG = "UILoader";
    private View mLoadingView;
    private View mSuccessView;
    private View mNetworkErrorView;
    private View mEmptyView;

    public enum UIStatus {
        LOADING,SUCCESS,NETWORK_ERROR,EMPTY,NONE
    }

    public UIStatus mCurrentStatus = UIStatus.NONE;

    public UILoader(@NonNull Context context) {
        this(context,null);
    }

    public UILoader(@NonNull Context context, @Nullable AttributeSet attrs) {
        this(context,attrs,0);
    }

    public UILoader(@NonNull Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    //更新UI
    public void updateStatus(UIStatus status){
        mCurrentStatus = status;
        BaseApplication.getHandler().post(new Runnable() {
            @Override
            public void run() {
                switchUIByCurrentStatus();
            }
        });

    }

    /**
     * 初始化UI：把相关的UI加载进来
     */
    private void init() {
        switchUIByCurrentStatus();
    }

    private void switchUIByCurrentStatus() {
        //加载中
        LogUtils.d(TAG,"当前状态是" + mCurrentStatus);
        if (mLoadingView == null) {
            mLoadingView = getLoadingView();
            addView(mLoadingView);
        }
        //根据状态设置是否可见
        mLoadingView.setVisibility(mCurrentStatus==UIStatus.LOADING ? VISIBLE:GONE);


        //成功
        if (mSuccessView == null) {
            mSuccessView = getSuccessView(this);
            addView(mSuccessView);
        }
        //根据状态设置是否可见
        mSuccessView.setVisibility(mCurrentStatus==UIStatus.SUCCESS ? VISIBLE:GONE);//加载中

        //网络错误页面
        if (mNetworkErrorView == null) {
            mNetworkErrorView = getNetworkErrorView();
            addView(mNetworkErrorView);
        }
        //根据状态设置是否可见
            mNetworkErrorView.setVisibility(mCurrentStatus==UIStatus.NETWORK_ERROR ? VISIBLE:GONE);
        LogUtils.d(TAG ,"mNetworkErrorView的visibility属性为" + mNetworkErrorView.getVisibility());

        //数据为空
        if (mEmptyView == null) {
            mEmptyView = getEmptyView();
            addView(mEmptyView);
        }
        //根据状态设置是否可见
        mEmptyView.setVisibility(mCurrentStatus==UIStatus.EMPTY ? VISIBLE:GONE);
    }

    private View getEmptyView() {
        return LayoutInflater.from(getContext()).inflate(R.layout.fragment_empty_view,this,false);
    }

    private View getNetworkErrorView(){
        View networkErrorView = LayoutInflater.from(getContext()).inflate(R.layout.fragment_error_view,this,false);
        return networkErrorView;
    }

    protected abstract View getSuccessView(ViewGroup container);

    private View getLoadingView() {
        return LayoutInflater.from(getContext()).inflate(R.layout.fragment_loading_view,this,false);
    }
}

RecommendFragment

public class RecommendFragment extends BaseFragment implements IRecommendViewCallback{
    private static final String TAG = "RecommendFragment";
    private View mRootView;
    private RecyclerView mRecommendRv;
    private RecommendListAdapter mRecommendListAdapter;
    private RecommendPresenter mRecommendPresenter;
    private UILoader mUiLoader;

    @Override
    protected View onSubViewLoaded(final LayoutInflater layoutInflater, ViewGroup container) {

        mUiLoader = new UILoader(getContext()) {
            @Override
            protected View getSuccessView(ViewGroup container) {
                return createSuccessView(layoutInflater,container);
            }
        };
        //RecycleView的使用
            //找到控件
        //获取数据
        //getRecommendData();
            //先获取逻辑层的对象
        mRecommendPresenter = RecommendPresenter.getInstance();
            //注册通知接口
        mRecommendPresenter.registerViewCallback(this);
            //获取推荐列表
        mRecommendPresenter.getRecommendList();

        if (mUiLoader.getParent() instanceof ViewGroup) {
            ((ViewGroup) mUiLoader.getParent()).removeView(mUiLoader);
        }

        //返回view，给界面显示
        return mRootView;
    }

    private View createSuccessView(LayoutInflater layoutInflater, ViewGroup container) {
        mRootView = layoutInflater.inflate(R.layout.fragment_recommend,container,false);

        mRecommendRv = mRootView.findViewById(R.id.recommend_list);
        //设置RecycleView的管理器
        LinearLayoutManager layoutManager = new LinearLayoutManager(getContext());
        layoutManager.setOrientation(LinearLayoutManager.VERTICAL);
        mRecommendRv.setLayoutManager(layoutManager);
        mRecommendRv.addItemDecoration(new RecyclerView.ItemDecoration() {
            @Override
            public void getItemOffsets(@NonNull Rect outRect, @NonNull View view, @NonNull RecyclerView parent, @NonNull RecyclerView.State state) {
                outRect.top = UIUtil.dip2px(view.getContext(),5);
                outRect.bottom = UIUtil.dip2px(view.getContext(),5);
                outRect.left = UIUtil.dip2px(view.getContext(),5);
                outRect.right = UIUtil.dip2px(view.getContext(),5);
            }
        });
        //设置适配器
        mRecommendListAdapter = new RecommendListAdapter();
        mRecommendRv.setAdapter(mRecommendListAdapter);

        return mRootView;
    }

    @Override
    public void onRecommendListLoaded(List<Album> result) {
        LogUtils.d(TAG,"RecommendListLoaded");
        //当获取到内容时，该方法被调用
        //更新UI
        mRecommendListAdapter.setData(result);
        mUiLoader.updateStatus(UILoader.UIStatus.SUCCESS);
    }

    @Override
    public void onNetworkError() {
        LogUtils.d(TAG,"NETWORK_ERROR");
        mUiLoader.updateStatus(UILoader.UIStatus.NETWORK_ERROR);
    }

    @Override
    public void onEmpty() {
        LogUtils.d(TAG,"EMPTY");
        mUiLoader.updateStatus(UILoader.UIStatus.EMPTY);
    }

    @Override
    public void onLoading() {
        LogUtils.d(TAG,"LOADING");
        mUiLoader.updateStatus(UILoader.UIStatus.LOADING);
    }

    @Override
    public void onDestroyView() {
        super.onDestroyView();
        //取消接口注册，以免内存泄漏
        if (mRecommendPresenter != null) {
            mRecommendPresenter.unregisterViewCallback(this);
        }
    }
}

那你自己想呗，至少你得把代码弄上来吧。

你UILoader里的更新状态的代码呢？一走的流程你给上来呀。

哇，感谢！我也遇见了相同的问题