如何使用androidx.recyclerview.selection选择回收视图中列出的所有项目？

implementation 'androidx.recyclerview:recyclerview-selection:1.1.0'

public class MyItemKeyProvider extends ItemKeyProvider<Long> {
    private List<MyItem> items;

    public MyItemKeyProvider(List<MyItem> items) {
        super(SCOPE_MAPPED);
        this.items = items;
    }

    @Nullable
    @Override
    public Long getKey(int position) {
        return items.get(position).getId();
    }

    @Override
    public int getPosition(@NonNull Long key) {
        for (int i = 0; i < items.size(); i++) {
            if (items.get(i).getId().equals(key)) {
                return i;
            }
        }
        return RecyclerView.NO_POSITION;
    }
}

public class MySelectionObserver extends SelectionTracker.SelectionObserver<Long> {
    @Override
    public void onSelectionChanged() {
        super.onSelectionChanged();
        // 处理选择变化的逻辑
    }
}

RecyclerView recyclerView = findViewById(R.id.recyclerView);
List<MyItem> items = ...; // 从数据源获取项目列表
MyItemKeyProvider itemKeyProvider = new MyItemKeyProvider(items);
SelectionTracker<Long> selectionTracker = new SelectionTracker.Builder<>(
        "mySelection",
        recyclerView,
        itemKeyProvider,
        new MyItemDetailsLookup(recyclerView),
        StorageStrategy.createLongStorage()
).withSelectionPredicate(SelectionPredicates.createSelectAnything()).build();
MySelectionObserver selectionObserver = new MySelectionObserver();
selectionTracker.addObserver(selectionObserver);

public class MyItemDetailsLookup extends ItemDetailsLookup<Long> {
    private RecyclerView recyclerView;

    public MyItemDetailsLookup(RecyclerView recyclerView) {
        this.recyclerView = recyclerView;
    }

    @Nullable
    @Override
    public ItemDetails<Long> getItemDetails(@NonNull MotionEvent e) {
        View view = recyclerView.findChildViewUnder(e.getX(), e.getY());
        if (view != null) {
            RecyclerView.ViewHolder viewHolder = recyclerView.getChildViewHolder(view);
            if (viewHolder instanceof MyAdapter.MyViewHolder) {
                return ((MyAdapter.MyViewHolder) viewHolder).getItemDetails();
            }
        }
        return null;
    }
}

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.MyViewHolder> {
    private List<MyItem> items;
    private SelectionTracker<Long> selectionTracker;

    public MyAdapter(List<MyItem> items, SelectionTracker<Long> selectionTracker) {
        this.items = items;
        this.selectionTracker = selectionTracker;
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        // 创建ViewHolder
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        // 绑定数据到ViewHolder
        MyItem item = items.get(position);
        holder.bind(item);
        holder.itemView.setActivated(selectionTracker.isSelected(item.getId()));
    }

    @Override
    public int getItemCount() {
        return items.size();
    }

    public class MyViewHolder extends RecyclerView.ViewHolder {
        private TextView textView;

        public MyViewHolder(@NonNull View itemView) {
            super(itemView);
            textView = itemView.findViewById(R.id.textView);
        }

        public void bind(MyItem item) {
            textView.setText(item.getName());
        }

        public ItemDetailsLookup.ItemDetails<Long> getItemDetails() {
            return new ItemDetailsLookup.ItemDetails<Long>() {
                @Override
                public int getPosition() {
                    return getAdapterPosition();
                }

                @Nullable
                @Override
                public Long getSelectionKey() {
                    return items.get(getAdapterPosition()).getId();
                }
            };
        }
    }
}

MyAdapter adapter = new MyAdapter(items, selectionTracker);
recyclerView.setAdapter(adapter);
selectionTracker.attachToRecyclerView(recyclerView);