Android Filter RecyclerView Using SearchView In ToolBar

There might be requirement in your application where you want to implement the search functionality by having searchView widget inside the toolbar for filter the recyclerview . In the previous series of tutorial we have seen the basics of a recyclerView and it's scrolling behaviour and also on recyclerView with cardview , In this tutorial we will see the logic for filtering the items in  recyclerview .

Adding libraries

dependencies {
    compile 'com.android.support:cardview-v7:24.0.0'
    compile 'com.android.support:recyclerview-v7:24.0.0'
}

activity_main.xml

-------------------------

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.anil.app1.MainActivity">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/myrec"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:scrollbars="vertical">

</android.support.v7.widget.RecyclerView>
</LinearLayout>

mycardview_xml

-----------------------------

<android.support.v7.widget.CardView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:card_view="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    card_view:cardCornerRadius="5dp"
    card_view:cardElevation="3dp"
    card_view:cardUseCompatPadding="true">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <ImageView
            android:id="@+id/list_avatar"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:layout_alignParentLeft="true"
            android:layout_centerVertical="true"
            android:layout_marginLeft="10dp"
            android:scaleType="centerCrop"
            android:src="@drawable/settingicon" />

        <TextView
            android:id="@+id/list_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignLeft="@+id/list_desc"
            android:layout_alignParentTop="true"
            android:layout_alignStart="@+id/list_desc"
            android:text="Androidwarriors "
            android:textAppearance="?attr/textAppearanceListItem"
            android:textColor="#000000"
            android:textSize="16sp" />

        <TextView
            android:id="@+id/list_desc"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@+id/list_title"
            android:layout_marginLeft="16dp"
            android:layout_toRightOf="@+id/list_avatar"
            android:ellipsize="end"
            android:singleLine="true"
            android:text="Place to dive into android programming"
            android:textAppearance="?attr/textAppearanceListItem"
            android:textColor="#000000"
            android:textSize="14sp" />
    </RelativeLayout>
</android.support.v7.widget.CardView>

Coding Part

----------------------------

Post.Java

package com.example.anil.app1;

/**
 * Created by Anil on 19-07-2016.
 */
public class Post {

    private String postTitle;

    private String postSubTitle;

    public String getPostTitle() {
        return postTitle;
    }

    public void setPostTitle(String postTitle) {
        this.postTitle = postTitle;
    }

    public String getPostSubTitle() {
        return postSubTitle;
    }

    public void setPostSubTitle(String postSubTitle) {
        this.postSubTitle = postSubTitle;
    }

    public Post(String postTitle, String postSubTitle) {
        this.postTitle = postTitle;
        this.postSubTitle = postSubTitle;
    }
}

 MyRecAdapter.Java

---------------------------

package com.example.anil.app1;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

/**
 * Created by Anil on 19-07-2016.
 */
public class MyRecAdapter extends RecyclerView.Adapter<MyRecAdapter.VH> {
    public List<Post> parkingList;

    public Context context;
    ArrayList<Post> mCountryModel;

    public MyRecAdapter(List<Post> parkingList, Context context) {
        this.parkingList = parkingList;
        this.context = context;
    }


    @Override
    public MyRecAdapter.VH onCreateViewHolder(ViewGroup parent, int viewType) {
        return new MyRecAdapter.VH(LayoutInflater.from(parent.getContext()).inflate(R.layout.mycardview, parent, false));
    }

    @Override
    public void onBindViewHolder(MyRecAdapter.VH holder, int position) {
        holder.t1.setText(parkingList.get(position).getPostTitle());
        holder.t2.setText(parkingList.get(position).getPostSubTitle());


    }

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

    public class VH extends RecyclerView.ViewHolder {
        TextView t1, t2;

        public VH(View itemView) {
            super(itemView);
            t1 = (TextView) itemView.findViewById(R.id.list_title);
            t2 = (TextView) itemView.findViewById(R.id.list_desc);
        }
    }

    public void setFilter(List<Post> countryModels) {
        mCountryModel = new ArrayList<>();
        mCountryModel.addAll(countryModels);
        notifyDataSetChanged();
    }
}

 MainActivity.Java

---------------------------

package com.example.anil.app1;

import android.os.Bundle;
import android.support.v4.view.MenuItemCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.SearchView;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements SearchView.OnQueryTextListener {
    MyRecAdapter myRecAdapter;
    RecyclerView recyclerView;
    List<Post> list;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        recyclerView = (RecyclerView) findViewById(R.id.myrec);
        createdata();
        myRecAdapter = new MyRecAdapter(list, MainActivity.this);
        recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
        recyclerView.setAdapter(myRecAdapter);

    }

    void createdata() {
//        myRecAdapter.notifyDataSetChanged();
        list = new ArrayList<>();
        list.add(new Post("Anil", "Tadipatri,RaylaSeema"));
        list.add(new Post("Aswartha", "Jammalamadugu,RaylaSeema"));
        list.add(new Post("Jayachandra", "Konnali,RaylaSeema"));
        list.add(new Post("Mohan", "Pileru,RaylaSeema"));
        list.add(new Post("TulasiRam", "Pulivendula,RaylaSeema"));
        list.add(new Post("Ashraff", "Rayachoti,RaylaSeema"));
        list.add(new Post("Kishore", "Rajampeta,RaylaSeema"));
        list.add(new Post("Mahendra", "Porumamilla,RaylaSeema"));
        list.add(new Post("Veera", "Ananthapur,RaylaSeema"));
    }

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

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

        searchView.setOnQueryTextListener(this);

        return super.onCreateOptionsMenu(menu);
    }


    @Override
    public boolean onQueryTextSubmit(String query) {
//        Toast.makeText(MainActivity.this, "Name is : "+query, Toast.LENGTH_SHORT).show();
        return false;
    }

    @Override
    public boolean onQueryTextChange(String newText) {

        final List<Post> filteredModelList = filter(list, newText);
        if (filteredModelList.size() > 0) {
            myRecAdapter.setFilter(filteredModelList);
            return true;
        } else {
            Toast.makeText(MainActivity.this, "Not Found", Toast.LENGTH_SHORT).show();
            return false;
        }
    }

    private List<Post> filter(List<Post> models, String query) {
        query = query.toLowerCase();

        final List<Post> filteredModelList = new ArrayList<>();
        for (Post model : models) {
            final String text = model.getPostTitle().toLowerCase();
            if (text.contains(query)) {
                filteredModelList.add(model);

            }
        }
        createdata();
        myRecAdapter = new MyRecAdapter(filteredModelList, MainActivity.this);
        recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.this));
        recyclerView.setAdapter(myRecAdapter);
        myRecAdapter.notifyDataSetChanged();
        return filteredModelList;
    }
}