Question

我正在使用Green Robot的EventBus进行内部事件消息传递，我想使用EventBus在RecyclerView中显示数据。问题是正确接收了EventBus帖子，并在Android 5＆＃39;＆＃39;＆＃39;设备，但相同的代码不适用于7＆＃39;＆＃39;和10＆＃39;＆＃39;片段。当片段第一次加载时，它适用于所有设备，但是当我尝试使用EventBus绑定数据时，它无法正常工作。

   StaggeredGridLayoutManager staggeredGridLayoutManager = new StaggeredGridLayoutManager(colCount, StaggeredGridLayoutManager.VERTICAL);

        recyclerView.setLayoutManager(staggeredGridLayoutManager);

        SpacesItemDecoration decoration = new SpacesItemDecoration(4);
        recyclerView.addItemDecoration(decoration);

        recyclerView.setHasFixedSize(true);
        CategoryAdapter categoryAdapter = new CategoryAdapter(new ArrayList<Category>(), mListener);
        recyclerView.setAdapter(categoryAdapter);

上面的代码块在我的onCreateView方法中。

    @Subscribe(threadMode = ThreadMode.MAIN)
public void onClassificationEvent(final EventMessage event) {
    Log.e("onClassificationEvent", "onClassificationEvent AllFragment :" + event.getEventId());

    getActivity().runOnUiThread(new Runnable() {
        @Override
        public void run() {
            if (event.getEventId() == "20") {
                //All
                bindCategories(3);
            } else if (event.getEventId() == "21") {
                //Veg
                bindCategories(1);
            } else if (event.getEventId() == "22") {
                //NonVeg
                bindCategories(2);
            }
        }
    });


}

上面的代码是我的EventBus订阅方法

 private void bindCategories(final int classification) {

    List<Category> categories = new ArrayList<>();
    if (classification == 1) {
        categories = DbAccessHelper.CategoriesHelper.getVegCategories(getActivity());
    } else if (classification == 2) {
        categories = DbAccessHelper.CategoriesHelper.getNonVegCategories(getActivity());
    } else if (classification == 3) {
        categories = DbAccessHelper.CategoriesHelper.getAllCategories(getActivity());
    }
    if (categories != null) {
        if (!categories.isEmpty()) {
            tvError.setVisibility(View.GONE);
            recyclerView.setVisibility(View.VISIBLE);
            CategoryAdapter categoryAdapter = new CategoryAdapter(categories, mListener);
            recyclerView.setAdapter(categoryAdapter);
            categoryAdapter.notifyDataSetChanged();
        } else {
            tvError.setVisibility(View.VISIBLE);
            recyclerView.setVisibility(View.GONE);
            CategoryAdapter categoryAdapter = new CategoryAdapter(new ArrayList<Category>(), mListener);
            recyclerView.setAdapter(categoryAdapter);
        }
    } else {
        tvError.setVisibility(View.VISIBLE);
        recyclerView.setVisibility(View.GONE);
        CategoryAdapter categoryAdapter = new CategoryAdapter(new ArrayList<Category>(), mListener);
        recyclerView.setAdapter(categoryAdapter);
    }


}

此方法用于将RecyclerView与数据绑定。有人可以帮我找到问题吗？

无法在Android平板电脑

0 个答案: