问题：

搜索使用回收器的筛选器查看

范修伟

2023-03-14

我试图在Fragment中实现一个带有建议(过滤器)的SearchView，但是我没有成功。我尝试了几乎所有的教程，但没有一个对我有效。我将感激任何帮助。谢谢你

可扩展置标语言...

    <!--appBar layout-->
    <android.support.design.widget.AppBarLayout
        android:id="@+id/appBarLayout"
        android:fitsSystemWindows="true"
        android:layout_width="match_parent"
        android:layout_height="?attr/actionBarSize">

        <!--searchView layout-->
        <android.support.v7.widget.SearchView
            android:id="@+id/search_view"
            app:layout_scrollFlags="scroll|enterAlways"
            android:iconifiedByDefault="false"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:closeIcon="@drawable/ic_clear_white_18dp"
            app:searchIcon="@drawable/ic_search_white_24dp"
            app:queryHint="@string/search_contact"
            app:iconifiedByDefault="false"
            android:background="@color/colorPrimary"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Light"
            app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />

       </android.support.design.widget.AppBarLayout>

        <!-- recycler view-->
        <android.support.v7.widget.RecyclerView
            app:layout_behavior="@string/appbar_scrolling_view_behavior"
            android:id="@+id/recycler_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

碎片

@Override
    public View onCreateView(LayoutInflater inflater, final ViewGroup container, Bundle savedInstanceState) {
        View view = inflater.inflate(R.layout.fragment_contact_list, container, false);

        searchView = (SearchView)view.findViewById(R.id.search_view);
        fabButton = (FloatingActionButton)view.findViewById(R.id.fab_button);

        //recycler view
        recyclerView = (RecyclerView)view.findViewById(R.id.recycler_view);
        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
        contacts = SugarRecord.listAll(Contact.class);
        contactsAdapter = new ContactsAdapter(getActivity(), contacts);
        recyclerView.setAdapter(contactsAdapter);

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

            @Override
            public boolean onQueryTextChange(String newText) {
                // TODO: setFilter

                return true;
            }
        });

        return view;

适配器

public class ContactsAdapter extends RecyclerView.Adapter<ContactsAdapter.ContactVH> {

    List<Contact> mContact;
    List<Contact> mContactFilter;

    Context mContext;

    public ContactsAdapter(Context context, List<Contact> contact) {
        this.mContact = contact;
        this.mContext = context;
    }

    @Override
    public ContactVH onCreateViewHolder(ViewGroup parent, int viewType) {
        View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_item_contact, parent, false);
        ContactVH viewHolder = new ContactVH(view);
        return viewHolder;
    }

    @Override
    public void onBindViewHolder(ContactVH holder, int position) {
        holder.name.setText(mContact.get(position).getName());
    }

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

    class ContactVH extends RecyclerView.ViewHolder {
        @BindView(R.id.contact_name)
        TextView name;

        public ContactVH(View itemView) {
            super(itemView);
            ButterKnife.bind(this, itemView);
        }

    }

}

共有3个答案

闽高峯

2023-03-14

试试这个

@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {

    inflater.inflate(R.menu.main_menu, menu);

    MenuItem mSearchMenuItem = menu.findItem(R.id.search);
    SearchView searchView = (SearchView) mSearchMenuItem.getActionView();

    search(searchView);
}

public static void search(android.support.v7.widget.SearchView searchView) {

    searchView.setOnQueryTextListener(new android.support.v7.widget.SearchView.OnQueryTextListener() {
        @Override
        public boolean onQueryTextSubmit(String query) {

            return false;
        }

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

实现可过滤到适配器类

公共类CategoryAdapter扩展RecyclerView。适配器实现可过滤的{

private List<Category> categoryList;
private List<Category> mFilteredList;


public CategoryAdapter(List<Category> categoryList) {

    this.categoryList = categoryList;
    this.mFilteredList = categoryList;
}

@Override
public CategoryViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.category_card, parent, false);

    return new CategoryViewHolder(itemView);
}

@Override
public void onBindViewHolder(CategoryViewHolder holder, int position) {
        Category category = mFilteredList.get(position);
        holder.catname.setText(category.getCatName());
        holder.items.setText(category.getCatItems()+" Items");


}

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

@Override
public Filter getFilter() {
    return new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence charSequence) {

            String charString = charSequence.toString();
            if (charString.isEmpty()) {

                mFilteredList = categoryList;
            } else {

                List<Category> filteredList = new ArrayList<>();

                for (Category category : categoryList) {

                    if (category.getCatName().toLowerCase().contains(charString) || String.valueOf(category.getId()).contains(charString)) {

                        filteredList.add(category);
                    }
                }

                mFilteredList = filteredList;
            }

            FilterResults filterResults = new FilterResults();
            filterResults.values = mFilteredList;
            return filterResults;
        }

        @Override
        protected void publishResults(CharSequence charSequence, FilterResults filterResults) {
            mFilteredList = (List<Category>) filterResults.values;
            notifyDataSetChanged();
        }
    };
}

public class CategoryViewHolder extends RecyclerView.ViewHolder {
    public TextView catname, items;
    public ImageView imgView;

    public CategoryViewHolder(View view) {
        super(view);
        catname = view.findViewById(R.id.categorycard_cate_name);
        items = view.findViewById(R.id.categorycard_lbl_cat_items);

    }
}

public void removeItem(int position) {
    mFilteredList.remove(position);
    // notify the item removed by position
    // to perform recycler view delete animations
    // NOTE: don't call notifyDataSetChanged()
    notifyItemRemoved(position);
}

public void restoreItem(Category category, int position) {
    mFilteredList.add(position, category);
    // notify item added by position
    notifyItemInserted(position);
}

}

方弘

2023-03-14

在适配器类中实现filterable并覆盖它的方法。

    @Override
public Filter getFilter() {

    Filter filter = new Filter() {
        @Override
        protected FilterResults performFiltering(CharSequence charSequence) {
            FilterResults filterResults = new FilterResults();

            if(charSequence == null | charSequence.length() == 0){
                filterResults.count = getUserModelListFiltered.size();
                filterResults.values = getUserModelListFiltered;

            }else{
                String searchChr = charSequence.toString().toLowerCase();

                List<UserModel> resultData = new ArrayList<>();

                for(UserModel userModel: getUserModelListFiltered){
                    if(userModel.getUserName().toLowerCase().contains(searchChr)){
                        resultData.add(userModel);
                    }
                }
                filterResults.count = resultData.size();
                filterResults.values = resultData;

            }

            return filterResults;
        }

        @Override
        protected void publishResults(CharSequence charSequence, FilterResults filterResults) {

            userModelList = (List<UserModel>) filterResults.values;
            notifyDataSetChanged();

        }
    };
    return filter;
}

在您的主要活动中创建搜索视图并收听onQueryTextChange。

 @Override
public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.menu, menu);

    MenuItem menuItem = menu.findItem(R.id.search_view);

    SearchView searchView = (SearchView) menuItem.getActionView();

    searchView.setMaxWidth(Integer.MAX_VALUE);

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

        @Override
        public boolean onQueryTextChange(String newText) {

            usersAdapter.getFilter().filter(newText);
            return true;
        }
    });



    return  true;
}

完整的教程和源代码。带有搜索/过滤器的Recyclerview

车明贤

2023-03-14

您可以创建扩展Filter的类

class YourFilterClass extends Filter {

private List<Contact> contactList;
private List<Contact> filteredContactList;
private ContactsAdapter adapter;

    public YourFilterClass(List<Contact> contactList, ContactsAdapter adapter) {
     this.adapter = adapter;
     this.contactList = contactList;
     this.filteredContactList = new ArrayList();
    }

    @Override
    protected FilterResults performFiltering(CharSequence constraint) {
    filteredContactList.clear();
    final FilterResults results = new FilterResults();

    //here you need to add proper items do filteredContactList
     for (final Contact item : contactList) {
            if (item.getName().toLowerCase().trim().contains("pattern")) { 
                filteredContactList.add(item);
            }
        }

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

    @Override
    protected void publishResults(CharSequence constraint, FilterResults results) {
        adapter.setList(filteredContactList);
        adapter.notifyDataSetChanged();
    }

}

然后你可以将此过滤器添加到您的联系人适配器。

public class ContactsAdapter extends RecyclerView.Adapter<ContactsAdapter.ContactVH> {

List<Contact> mContact;
List<Contact> mContactFilter;
YourFilterClass filter;

Context mContext;

public ContactsAdapter(Context context, List<Contact> contact) {
    this.mContact = contact;
    this.mContactFilter = contact;
    this.mContext = context;
    filter = new YourFilterClass(mContact, this);
}

@Override
public ContactVH onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.row_item_contact, parent, false);
    ContactVH viewHolder = new ContactVH(view);
    return viewHolder;
}

@Override
public void onBindViewHolder(ContactVH holder, int position) {
    holder.name.setText(mContactFilter.get(position).getName());
}
// set adapter filtered list
public void setList(List<Contact> list) {
    this.mContactFilter = list;
}
//call when you want to filter
public void filterList(String text) {
    filter.filter(text);
}

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

class ContactVH extends RecyclerView.ViewHolder {
    @BindView(R.id.contact_name)
    TextView name;

    public ContactVH(View itemView) {
        super(itemView);
        ButterKnife.bind(this, itemView);
    }

}

}

类似资料：

过滤器回收器使用搜索视图查看

我使用SearchView过滤我的应用程序的RecyclerView，就像这篇文章中描述的一样：如何使用SearchView筛选RecyclerView 一开始一切看起来都很好，我可以根据需要过滤RecyclerView，但是经过一些尝试，出现了两个问题：如果我在SearchView中输入文本太快，应用程序会崩溃，并出现以下日志： E/AndroidRuntime： FATAL EXCEPTI
使用搜索视图和搜索建议以及语音搜索筛选回收视图

Android通用搜索功能似乎有很好的系统支持，除了语音搜索之外，还可以显示搜索建议，如最近的查询建议和自定义建议。此框架要求声明搜索活动。该活动以意向获取查询，并将搜索结果呈现给列表视图。我对此有两个问题： 1-我想在当前活动中进行搜索（我在应用程序栏上有一个搜索视图）。那么，该活动是否会重新启动？那会很奇怪。我应该发送到不可见的活动并获取结果吗？这可能吗？ 2-我可以使用RecyclerV
RecyclerView搜索筛选器不工作

带有可筛选得适配器： filter由于某种原因不起作用，当我键入某些内容时，它会清除recyclerview
搜索筛选

Navicat 提供筛选功能，让你在连接窗格、对象列表窗格、模型设计器和其他树状结构搜索对象。在连接窗格或其他树状结构，点击该窗格或树来聚焦并直接筛选字符串。如果连接窗格中的连接已打开，筛选也会同时应用到连接中的数据库对象。在对象列表窗格，点击 Navicat 主窗口的，并在搜索框里输入筛选字符串。在模型设计窗口，简单地在搜索框里输入筛选字符串。你可以移除筛选，只需删除筛选字符串。
搜索筛选

“对象筛选”能让你在 Navicat Cloud 筛选模型，在视图设计器中筛选树状结构、以及在画布中筛选包含筛选字符串的表、实体或视图。只需在“搜索”文本框中指定一个筛选字符串。若要移除筛选，只需删除筛选字符串。
搜索筛选

“对象筛选”能让你在 Navicat Cloud 筛选模型，以及在画布中筛选包含筛选字符串的表、实体或视图。只需在“搜索”文本框中指定一个筛选字符串。若要移除筛选，只需删除筛选字符串。 “树筛选”能让你在浏览器或檢视图设计器中筛选包含筛选字符串的树状结构。点击树来聚焦并直接指定筛选字符串。若要移除筛选，只需删除筛选字符串。

搜索使用回收器的筛选器查看

共有3个答案

相关问答

相关文章

相关阅读

相关工具

相关文档