我正在使用显示不同类别列表的 RecyclerView
。每行项目还包含 RecyclerView
以显示类别项目列表。父级 RecyclerView
由垂直 LinearLayoutManager
填充,子级 RecyclerViews
由 GridLayoutManager
填充(2 列)。子 RecyclerViews
不显示除前 2 个之外的所有类别项目,即使它有很多类别项目。所有剩余的类别项目都隐藏在特定类别中。换句话说,您可以说子级 RecyclerView
没有扩展到它包含的项目那么多。
我在这里找到了不同的解决方案,但没有人奏效。这就是为什么再次发帖。
最佳答案
您可以使用这个 library 仅用一个 RecyclerView 轻松实现它.见下图:
首先创建一个Section类:
class MySection extends StatelessSection {
String title;
List<String> list;
public MySection(String title, 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.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 MyHeaderViewHolder(view);
}
@Override
public void onBindHeaderViewHolder(RecyclerView.ViewHolder holder) {
MyHeaderViewHolder headerHolder = (MyHeaderViewHolder) holder;
// bind your header view here
headerHolder.tvItem.setText(title);
}
}
然后您使用您的 Sections 设置 RecyclerView:
// Create an instance of SectionedRecyclerViewAdapter
SectionedRecyclerViewAdapter sectionAdapter = new SectionedRecyclerViewAdapter();
// Create your sections with the list of data for each year
MySection section1 = new MySection("Categories 1", categories1DataList);
MySection section2 = new MySection("Categories 2", categories2DataList);
// Add your Sections to the adapter
sectionAdapter.addSection(section1);
sectionAdapter.addSection(section2);
// 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);
关于RecyclerView 中的 Android RecyclerView?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/38484655/