带有GridLayoutManager的RecyclerView在带有LinearLayoutManager的

Question

现在我的问题是，如何在自定义的GridLayoutManager而不是自定义的LinearLayoutManager中重写OnMeasure方法？我没有在这里公布我的代码，因为它与链接的代码本质上是相同的，只是我需要为子RecyclerView创建一个自定义的GridLayoutManager来代替，这样它就可以按照“pptang”的答案所述进行正确的度量。

否则，有没有比在第二个RecyclerView中使用1个RecyclerView更好的方法？只能有1个RecyclerView使用上述CardViews列表和每个CardView中唯一项的网格填充活动/片段吗？

Answer 1

您可以使用库SectionedRecyclerViewAdapter仅使用一个RecyclerView生成它。

您可以在这里找到下面图像示例的完整代码。

首先创建Section类：

class MySection extends StatelessSection {

    String title;
    String subtitle;
    List<String> list;

    public MySection(String title, String subtitle, List<String> list) {
        // call constructor with layout resources for this Section header, footer and items 
        super(R.layout.section_header, R.layout.section_item);

        this.title = title;
        this.subtitle = subtitle;
        this.list = list;
    }

    @Override
    public int getContentItemsTotal() {
        return list.size(); // number of items of this section
    }

    @Override
    public RecyclerView.ViewHolder getItemViewHolder(View view) {
        // return a custom instance of ViewHolder for the items of this section
        return new MyItemViewHolder(view);
    }

    @Override
    public void onBindItemViewHolder(RecyclerView.ViewHolder holder, int position) {
        MyItemViewHolder itemHolder = (MyItemViewHolder) holder;

        // bind your view here
        itemHolder.tvItem.setText(list.get(position));
    }

    @Override
    public RecyclerView.ViewHolder getHeaderViewHolder(View view) {
        return new SimpleHeaderViewHolder(view);
    }

    @Override
    public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) {
        MyHeaderViewHolder headerHolder = (MyHeaderViewHolder) holder;

        // bind your header view here
        headerHolder.tvTitle.setText(title);
        headerHolder.tvSubTitle.setText(subtitle);
    }
}

// Create an instance of SectionedRecyclerViewAdapter 
SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter();

// Create your sections with the list of data for each year
MySection section1 = new MySection("Title", "Subhead", firstDataList);

// Add your Sections to the adapter
sectionAdapter.addSection(section1);

// Set up your RecyclerView with the SectionedRecyclerViewAdapter
GridLayoutManager glm = new GridLayoutManager(getContext(), 2);
glm.setSpanSizeLookup(new GridLayoutManager.SpanSizeLookup() {
    @Override
    public int getSpanSize(int position) {
        switch(sectionAdapter.getSectionItemViewType(position)) {
            case SectionedRecyclerViewAdapter.VIEW_TYPE_HEADER:
                return 2;
            default:
                return 1;
        }
    }
});
recyclerView.setLayoutManager(glm);
recyclerView.setAdapter(sectionAdapter);