在RecyclerView中过滤

public class MyFilter extends Filter {
    private List<Data> originalData; // 原始数据源
    private List<Data> filteredData; // 过滤后的数据源
    private MyAdapter adapter; // RecyclerView的适配器

    public MyFilter(List<Data> data, MyAdapter adapter) {
        this.originalData = data;
        this.filteredData = new ArrayList<>(data);
        this.adapter = adapter;
    }

    @Override
    protected FilterResults performFiltering(CharSequence constraint) {
        FilterResults results = new FilterResults();
        List<Data> filteredList = new ArrayList<>();

        if (constraint == null || constraint.length() == 0) {
            // 如果过滤条件为空，则显示所有数据
            filteredList.addAll(originalData);
        } else {
            String filterPattern = constraint.toString().toLowerCase().trim();

            for (Data item : originalData) {
                // 根据特定条件筛选数据
                if (item.getName().toLowerCase().contains(filterPattern)) {
                    filteredList.add(item);
                }
            }
        }

        results.values = filteredList;
        results.count = filteredList.size();
        return results;
    }

    @Override
    protected void publishResults(CharSequence constraint, FilterResults results) {
        filteredData.clear();
        filteredData.addAll((List<Data>) results.values);
        adapter.notifyDataSetChanged();
    }
}

public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> implements Filterable {
    private List<Data> data;
    private List<Data> filteredData;
    private MyFilter filter;

    public MyAdapter(List<Data> data) {
        this.data = data;
        this.filteredData = new ArrayList<>(data);
    }

    @Override
    public Filter getFilter() {
        if (filter == null) {
            filter = new MyFilter(data, this);
        }
        return filter;
    }

    // 其他适配器相关方法的实现...

    public static class ViewHolder extends RecyclerView.ViewHolder {
        // ViewHolder的实现...
    }
}

MyAdapter adapter = new MyAdapter(data);
RecyclerView recyclerView = findViewById(R.id.recyclerView);
recyclerView.setAdapter(adapter);

EditText editText = findViewById(R.id.editText);
editText.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        adapter.getFilter().filter(s);
    }

    @Override
    public void afterTextChanged(Editable s) {
    }
});