如果你想搜索按钮点击，然后这工作得很好。

filterIcon.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        String strCHR = homeSearchEdit.getText().toString();
        if (homeSearchEdit.getText().toString().length() > 0) {
            ArrayList<ServiceModel> listNew = new ArrayList<>();
            for (int l = 0; l < arrayList.size(); l++) {
                String serviceName = arrayList.get(l).getServiceName().toLowerCase();
                if (serviceName.contains(strCHR.toLowerCase())) {
                    listNew.add(arrayList.get(l));
                }
            }
            recyclerView.setVisibility(View.VISIBLE);
            adapter = new ServiceAdapter(HomeActivity.this, listNew);
            recyclerView.setAdapter(adapter);
        } else {
            recyclerView.setVisibility(View.VISIBLE);
            adapter = new ServiceAdapter(HomeActivity.this, arrayList);
            recyclerView.setAdapter(adapter);
        }
    }
});

其中，filterIcon是按钮，homeSearchEdit是editText(我们申请搜索的地方)。

我建议用以下2件事修改@Xaver Kapeller的解决方案，以避免在您清除搜索文本后(过滤器不再工作)，因为适配器的列表后面的大小小于过滤器列表，并且发生了IndexOutOfBoundsException。所以代码需要修改如下

public void addItem(int position, ExampleModel model) {
    if(position >= mModel.size()) {
        mModel.add(model);
        notifyItemInserted(mModel.size()-1);
    } else {
        mModels.add(position, model);
        notifyItemInserted(position);
    }
}

并在moveItem功能中进行修改

public void moveItem(int fromPosition, int toPosition) {
    final ExampleModel model = mModels.remove(fromPosition);
    if(toPosition >= mModels.size()) {
        mModels.add(model);
        notifyItemMoved(fromPosition, mModels.size()-1);
    } else {
        mModels.add(toPosition, model);
        notifyItemMoved(fromPosition, toPosition); 
    }
}

希望能对你有所帮助!

在适配器中添加接口。

public interface SelectedUser{

    void selectedUser(UserModel userModel);

}

在mainactivity中实现接口并重写方法。 @Override public void selectedUser(UserModel) {

    startActivity(new Intent(MainActivity.this, SelectedUserActivity.class).putExtra("data",userModel));



}

完整的教程和源代码: Recyclerview与searchview和onclicklistener

我不知道为什么每个人都用两个相同的列表来解决这个问题。这使用太多内存…

为什么不只是隐藏未找到的元素，并简单地将它们的索引存储在一个Set中，以便以后能够恢复它们呢?这样内存就少多了，特别是当你的对象很大的时候。

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.SampleViewHolders>{
    private List<MyObject> myObjectsList; //holds the items of type MyObject
    private Set<Integer> foundObjects; //holds the indices of the found items

    public MyRecyclerViewAdapter(Context context, List<MyObject> myObjectsList)
    {
        this.myObjectsList = myObjectsList;
        this.foundObjects = new HashSet<>();
        //first, add all indices to the indices set
        for(int i = 0; i < this.myObjectsList.size(); i++)
        {
            this.foundObjects.add(i);
        }
    }

    @NonNull
    @Override
    public SampleViewHolders onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        View layoutView = LayoutInflater.from(parent.getContext()).inflate(
                R.layout.my_layout_for_staggered_grid, null);
        MyRecyclerViewAdapter.SampleViewHolders rcv = new MyRecyclerViewAdapter.SampleViewHolders(layoutView);
        return rcv;
    }

    @Override
    public void onBindViewHolder(@NonNull SampleViewHolders holder, int position)
    {
        //look for object in O(1) in the indices set
        if(!foundObjects.contains(position))
        {
            //object not found => hide it.
            holder.hideLayout();
            return;
        }
        else
        {
            //object found => show it.
            holder.showLayout();
        }

        //holder.imgImageView.setImageResource(...)
        //holder.nameTextView.setText(...)
    }

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

    public void findObject(String text)
    {
        //look for "text" in the objects list
        for(int i = 0; i < myObjectsList.size(); i++)
        {
            //if it's empty text, we want all objects, so just add it to the set.
            if(text.length() == 0)
            {
                foundObjects.add(i);
            }
            else
            {
                //otherwise check if it meets your search criteria and add it or remove it accordingly
                if (myObjectsList.get(i).getName().toLowerCase().contains(text.toLowerCase()))
                {
                    foundObjects.add(i);
                }
                else
                {
                    foundObjects.remove(i);
                }
            }
        }
        notifyDataSetChanged();
    }

    public class SampleViewHolders extends RecyclerView.ViewHolder implements View.OnClickListener
    {
        public ImageView imgImageView;
        public TextView nameTextView;

        private final CardView layout;
        private final CardView.LayoutParams hiddenLayoutParams;
        private final CardView.LayoutParams shownLayoutParams;

        
        public SampleViewHolders(View itemView)
        {
            super(itemView);
            itemView.setOnClickListener(this);
            imgImageView = (ImageView) itemView.findViewById(R.id.some_image_view);
            nameTextView = (TextView) itemView.findViewById(R.id.display_name_textview);

            layout = itemView.findViewById(R.id.card_view); //card_view is the id of my androidx.cardview.widget.CardView in my xml layout
            //prepare hidden layout params with height = 0, and visible layout params for later - see hideLayout() and showLayout()
            hiddenLayoutParams = new CardView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
            hiddenLayoutParams.height = 0;
            shownLayoutParams = new CardView.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
        }

        @Override
        public void onClick(View view)
        {
            //implement...
        }

        private void hideLayout() {
            //hide the layout
            layout.setLayoutParams(hiddenLayoutParams);
        }

        private void showLayout() {
            //show the layout
            layout.setLayoutParams(shownLayoutParams);
        }
    }
}

我只是有一个EditText作为我的搜索框:

cardsSearchTextView.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {

            }

            @Override
            public void afterTextChanged(Editable editable) {
                myViewAdapter.findObject(editable.toString().toLowerCase());
            }
        });

结果:

这是我对扩展@klimat答案不丢失过滤动画的看法。

public void filter(String query){
    int completeListIndex = 0;
    int filteredListIndex = 0;
    while (completeListIndex < completeList.size()){
        Movie item = completeList.get(completeListIndex);
        if(item.getName().toLowerCase().contains(query)){
            if(filteredListIndex < filteredList.size()) {
                Movie filter = filteredList.get(filteredListIndex);
                if (!item.getName().equals(filter.getName())) {
                    filteredList.add(filteredListIndex, item);
                    notifyItemInserted(filteredListIndex);
                }
            }else{
                filteredList.add(filteredListIndex, item);
                notifyItemInserted(filteredListIndex);
            }
            filteredListIndex++;
        }
        else if(filteredListIndex < filteredList.size()){
            Movie filter = filteredList.get(filteredListIndex);
            if (item.getName().equals(filter.getName())) {
                filteredList.remove(filteredListIndex);
                notifyItemRemoved(filteredListIndex);
            }
        }
        completeListIndex++;
    }
}

基本上，它所做的就是查看一个完整的列表，并逐个向过滤后的列表添加/删除项。

你所需要做的就是在RecyclerView中添加过滤器方法。适配器:

public void filter(String text) {
    items.clear();
    if(text.isEmpty()){
        items.addAll(itemsCopy);
    } else{
        text = text.toLowerCase();
        for(PhoneBookItem item: itemsCopy){
            if(item.name.toLowerCase().contains(text) || item.phone.toLowerCase().contains(text)){
                items.add(item);
            }
        }
    }
    notifyDataSetChanged();
}

itemscope在适配器的构造函数中初始化，如itemscope . addall (items)。

如果你这样做，只是调用过滤器从OnQueryTextListener:

searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextSubmit(String query) {
        adapter.filter(query);
        return true;
    }

    @Override
    public boolean onQueryTextChange(String newText) {
        adapter.filter(newText);
        return true;
    }
});

这是一个通过姓名和电话号码过滤我的电话簿的例子。