Android Filter Recyclerview By Using Searchview In Toolbar Or Actionbar

In this tutorial we will cover the following:
✔Recyclerview
✔CardView
✔Custom Row
✔SearchView
✔Row Animation
✔Item Click

Step 01: Add following dependencies in build.gradle(Module:app) under dependencies{}

implementation 'com.android.support:design:27.1.0'implementation 'com.android.support:cardview-v7:27.1.0'implementation 'com.android.support:recyclerview-v7:27.1.0'

Step 02: Create menu.xml under res>menu folder , to search item.

<?xml version="1.0" encoding="utf-8"?> <menu xmlns:android="http://schemas.android.com/apk/res/android"   xmlns:app="http://schemas.android.com/apk/res-auto"   xmlns:tools="http://schemas.android.com/tools"   tools:context=".MainActivity"> <item android:id="@+id/action_search" android:title="Search" app:actionViewClass="android.support.v7.widget.SearchView" android:icon="@drawable/search" app:searchHintIcon="@drawable/search" app:showAsAction="always|collapseActionView" /> </menu>

Step 03: Create model.xml in res>layout folder , to design row

<?xml version="1.0" encoding="utf-8"?><android.support.v7.widget.CardViewxmlns: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"card_view:cardUseCompatPadding="true"card_view:cardCornerRadius="5dp"card_view:cardElevation="5dp"card_view:cardBackgroundColor="@color/colorWhite"><RelativeLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:padding="10dp"android:orientation="horizontal"><ImageViewandroid:id="@+id/playerImage"android:layout_alignParentLeft="true"android:layout_alignParentStart="true"android:layout_width="100dp"android:layout_height="100dp"android:src="@mipmap/ic_launcher_round"/><TextViewandroid:id="@+id/nameTxt"android:layout_toRightOf="@id/playerImage"android:layout_toEndOf="@id/playerImage"android:layout_centerVertical="true"android:layout_width="match_parent"android:layout_height="wrap_content"android:padding="5dp"android:text="Name"android:textColor="@color/colorBlack" /></RelativeLayout></android.support.v7.widget.CardView>

Step 04: Add new colors White and Black in res>values>colors

<?xml version="1.0" encoding="utf-8"?><resources><color name="colorPrimary">#3F51B5</color><color name="colorPrimaryDark">#303F9F</color><color name="colorAccent">#FF4081</color><color name="colorWhite">#fff</color><color name="colorBlack">#000</color></resources>

Step 05: activity_main.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout 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"tools:context=".MainActivity"><android.support.v7.widget.RecyclerViewandroid:id="@+id/myRecycler"android:layout_width="match_parent"android:layout_height="match_parent"android:scrollbars="vertical" /></RelativeLayout>

Step 06: Create a class "Model.java"

package com.blogspot.devofandroid.myapplication;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public class Model {private String name;private int img;public String getName() {return name;}public void setName(String name) {this.name = name;}public int getImg() {return img;}public void setImg(int img) {this.img = img;}}

Step 07: Create a new Class "MyHolder.java"

package com.blogspot.devofandroid.myapplication;import android.support.v7.widget.RecyclerView;import android.view.View;import android.widget.ImageView;import android.widget.TextView;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public class MyHolder extends RecyclerView.ViewHolder implements View.OnClickListener {//OUR VIEWSImageView img;TextView nameTxt;ItemClickListener itemClickListener;public MyHolder(View itemView) {super(itemView);this.img= (ImageView) itemView.findViewById(R.id.playerImage);this.nameTxt= (TextView) itemView.findViewById(R.id.nameTxt);itemView.setOnClickListener(this);}@Overridepublic void onClick(View v) {this.itemClickListener.onItemClick(v ,getLayoutPosition());}public void setItemClickListener(ItemClickListener ic){this.itemClickListener=ic;}}

Step 08: Create a new Class "MyAdapter.java"

package com.blogspot.devofandroid.myapplication;import android.content.Context;import android.support.v7.widget.RecyclerView;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.view.animation.Animation;import android.view.animation.AnimationUtils;import android.widget.Filter;import android.widget.Filterable;import android.widget.Toast;import java.util.ArrayList;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public class MyAdapter extends RecyclerView.Adapter<MyHolder> implements Filterable {Context c;ArrayList<Model> players ,filterList;CustomFilter filter;public MyAdapter(Context ctx ,ArrayList<Model> players){this.c=ctx;this.players=players;this.filterList=players;}@Overridepublic MyHolder onCreateViewHolder(ViewGroup parent , int viewType) {//CONVERT XML TO VIEW OBJView v= LayoutInflater.from(parent.getContext()).inflate(R.layout.model ,null);//HOLDERMyHolder holder = new MyHolder(v);return holder;}//DATA BOUND TO VIEWS@Overridepublic void onBindViewHolder(MyHolder holder , int position) {//BIND DATAholder.nameTxt.setText(players.get(position).getName());holder.img.setImageResource(players.get(position).getImg());Animation animation = AnimationUtils.loadAnimation(c , android.R.anim.slide_in_left);holder.itemView.startAnimation(animation);//IMPLEMENT CLICK LISTENERholder.setItemClickListener(new ItemClickListener() {@Overridepublic void onItemClick(View v , int pos) {if (players.get(pos).getName().equals("Home")){Toast.makeText(c , "Home..." , Toast.LENGTH_SHORT).show();}else if (players.get(pos).getName().equals("Contacts")){Toast.makeText(c , "Contacts..." , Toast.LENGTH_SHORT).show();}else if (players.get(pos).getName().equals("Images")){Toast.makeText(c , "Images..." , Toast.LENGTH_SHORT).show();}else if (players.get(pos).getName().equals("Videos")){Toast.makeText(c , "Videos..." , Toast.LENGTH_SHORT).show();}else if (players.get(pos).getName().equals("Mails")){Toast.makeText(c , "Mails..." , Toast.LENGTH_SHORT).show();}}});}//GET TOTAL NUM OF PLAYERS@Overridepublic int getItemCount() {return players.size();}//RETURN FILTER OBJ@Overridepublic Filter getFilter() {if(filter==null){filter=new CustomFilter(filterList ,this);}return filter;}}

Step 09: Create a new Class "CustomFilter.java"

package com.blogspot.devofandroid.myapplication;import android.widget.Filter;import java.util.ArrayList;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public class CustomFilter extends Filter{MyAdapter adapter;ArrayList<Model> filterList;public CustomFilter(ArrayList<Model> filterList , MyAdapter adapter){this.adapter=adapter;this.filterList=filterList;}//FILTERING OCURS@Overrideprotected FilterResults performFiltering(CharSequence constraint) {FilterResults results=new FilterResults();//CHECK CONSTRAINT VALIDITYif(constraint != null && constraint.length() > 0){//CHANGE TO UPPERconstraint=constraint.toString().toUpperCase();//STORE OUR FILTERED PLAYERSArrayList<Model> filteredPlayers=new ArrayList<>();for (int i=0;i<filterList.size();i++){//CHECKif(filterList.get(i).getName().toUpperCase().contains(constraint)){//ADD PLAYER TO FILTERED PLAYERSfilteredPlayers.add(filterList.get(i));}}results.count=filteredPlayers.size();results.values=filteredPlayers;}else{results.count=filterList.size();results.values=filterList;}return results;}@Overrideprotected void publishResults(CharSequence constraint , FilterResults results) {adapter.players= (ArrayList<Model>) results.values;//REFRESHadapter.notifyDataSetChanged();}}

Step 10: Create a new Interface "ItemClickListener.java"

package com.blogspot.devofandroid.myapplication;import android.view.View;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public interface ItemClickListener {void onItemClick(View v , int pos);}

Step 11: MainActivity.java

package com.blogspot.devofandroid.myapplication;import android.support.v4.view.MenuItemCompat;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.support.v7.widget.DefaultItemAnimator;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 java.util.ArrayList;/** * Created by Atif on 11/3/2018. * devofandroid.blogspot.com */public class MainActivity extends AppCompatActivity {private static final String TAG = "MainActivity";private RecyclerView rv;private MyAdapter adapter;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);//sv= (SearchView) findViewById(R.id.mSearch);rv= (RecyclerView) findViewById(R.id.myRecycler);//SET ITS PROPERTIESrv.setLayoutManager(new LinearLayoutManager(this));rv.setItemAnimator(new DefaultItemAnimator());//ADAPTERadapter=new MyAdapter(this ,getPlayers());rv.setAdapter(adapter);}//ADD PLAYERS TO ARRAYLISTprivate ArrayList<Model> getPlayers() {ArrayList<Model> players=new ArrayList<>();Model p=new Model();p.setName("Home");p.setImg(R.drawable.home);players.add(p);p=new Model();p.setName("Contacts");p.setImg(R.drawable.contact);players.add(p);p=new Model();p.setName("Images");p.setImg(R.drawable.images);players.add(p);p=new Model();p.setName("Videos");p.setImg(R.drawable.videos);players.add(p);p=new Model();p.setName("Mails");p.setImg(R.drawable.mail);players.add(p);return players;}@Overridepublic boolean onCreateOptionsMenu( Menu menu) {getMenuInflater().inflate( R.menu.menu , menu);final MenuItem item = menu.findItem(R.id.action_search);final SearchView searchView = (SearchView) MenuItemCompat.getActionView(item);searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {@Overridepublic boolean onQueryTextSubmit(String query) {return false;}@Overridepublic boolean onQueryTextChange(String query) {//FILTER AS YOU TYPEadapter.getFilter().filter(query);return false;}});return true;}@Overridepublic boolean onOptionsItemSelected(MenuItem item) {// Handle action kafe item clicks here. The action kafe will// automatically handle clicks on the Home/Up button , so long// as you specify a parent activity in AndroidManifest.xml.int id = item.getItemId();//noinspection SimplifiableIfStatementreturn true;}}

Step 12: Output