一个 LinearLayoutManager 只能用于一个 RecyclerView？

Question

I am building an app having three RecyclerView in one fragment to show horizontal list of items. i created a LinearLayoutManager object and set it to all three RecyclerView . but it crashes app, saying one LinearLayoutManager can attached to only one RecyclerView .why can't i attach to all although i need the same Properties. code is ..

LinearLayoutManager llm = new LinearLayoutManager(getActivity());
        llm.setOrientation(LinearLayoutManager.HORIZONTAL);
        recViewTopSell.setLayoutManager(llm);
        recViewBrands.setLayoutManager(llm);
        recViewCategory.setLayoutManager(llm);

error at

 recViewBrands.setLayoutManager(llm);
            recViewCategory.setLayoutManager(llm);

Answer 1

No it can't be reused like that. The LayoutManager , LinearLayoutManager in your case, contains state specific to RecyclerView it is used with.

If there is a lot of setup involved for the three different LayoutMangers, consider a createLayoutManager() method to call three times instead.

Answer 2

Following Mattias answer do this:

    recViewTopSell.setLayoutManager(newLLM());
    recViewBrands.setLayoutManager(newLLM());
    recViewCategory.setLayoutManager(newLLM());

and then:

    private LinearLayoutManager newLLM() {
        LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
        linearLayoutManager.setOrientation(LinearLayoutManager.HORIZONTAL);
        return linearLayoutManager;
    }