Android Studio - RecyclerView / SearchView 구현

완성화면

 

 

1.레이아웃 구현

 

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".YogutActivity">

    <androidx.appcompat.widget.SearchView
        android:id="@+id/searchView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="8dp"
        android:background="@drawable/search_view_bg"
        app:iconifiedByDefault="false"
        app:layout_constraintBottom_toTopOf="@+id/recyclerView"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:queryHint="검색어를 입력하세요">

    </androidx.appcompat.widget.SearchView>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@drawable/search_view_bg"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="@+id/searchView"
        app:layout_constraintStart_toStartOf="@+id/searchView"
        app:layout_constraintTop_toBottomOf="@+id/searchView" />

</LinearLayout>

 

2. SearchView 배경 소스 구현

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <corners android:radius="5dp"></corners>
    <stroke android:color="@color/mypp"></stroke>
    <stroke android:width="2dp"></stroke>

</shape>

drawable폴더에 추가하여 줍니다

 

3.RecyclerView ItemList 레이아웃 구현

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

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:gravity="center_vertical"
        android:padding="20dp">
        
        <ImageView
            android:id="@+id/profile"
            android:layout_width="150dp"
            android:layout_height="150dp"
            android:src="@drawable/human"/>

        <LinearLayout
            android:orientation="vertical"
            android:layout_width="match_parent"
            android:layout_height="wrap_content">
            
            <TextView
                android:gravity="center"
                android:id="@+id/name"
                android:layout_width="match_parent"
                android:layout_height="75dp"
                android:text="이름"
                android:textSize="16sp"
                android:textColor="#000"/>
            
            <TextView
                android:gravity="center"
                android:id="@+id/message"
                android:layout_width="match_parent"
                android:layout_height="75dp"
                android:text="상태메시지"
                android:textSize="16sp"
                android:textColor="#444"
                android:maxLines="1"/>

        </LinearLayout>

    </LinearLayout>
    
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:layout_marginHorizontal="10dp"
        android:background="#aaa"/>

</LinearLayout>

layout폴더에 추가하여 줍니다

 

4.Adapter 클래스 구현

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.recyclerview.widget.RecyclerView;

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

public class MyRecyclerAdapter extends RecyclerView.Adapter<MyRecyclerAdapter.ViewHolder> {

    private ArrayList<FriendItem> mFriendList;

    public void setFilteredList(ArrayList<FriendItem> filteredList) {
        this.mFriendList = filteredList;
        notifyDataSetChanged();
    }

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

    @Override
    public void onBindViewHolder(@NonNull ViewHolder holder, int position) {
        holder.onBind(mFriendList.get(position));
    }

    public void setFriendList(ArrayList<FriendItem> list){
        this.mFriendList = list;
        notifyDataSetChanged();
    }

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

    class ViewHolder extends RecyclerView.ViewHolder {
        ImageView profile;
        TextView name;
        TextView message;

        public ViewHolder(@NonNull View itemView) {
            super(itemView);

            profile = (ImageView) itemView.findViewById(R.id.profile);
            name = (TextView) itemView.findViewById(R.id.name);
            message = (TextView) itemView.findViewById(R.id.message);
        }

        void onBind(FriendItem item){
            profile.setImageResource(item.getResourceId());
            name.setText(item.getName());
            message.setText(item.getMessage());
        }
    }
}

5.ItemList 클래스 구현

public class FriendItem {
    String name;
    String message;
    int resourceId;

    public FriendItem(int resourceId, String name, String message) {
        this.name = name;
        this.message= message;
        this.resourceId = resourceId;
    }

    public int getResourceId() {
        return resourceId;
    }

    public String getMessage() {
        return message;
    }

    public String getName() {
        return name;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setResourceId(int resourceId) {
        this.resourceId = resourceId;
    }
}

6.액티비티 클래스 구현

import androidx.appcompat.app.AppCompatActivity;
import androidx.appcompat.widget.SearchView;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.os.Bundle;
import android.widget.Toast;

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

public class YogutActivity extends AppCompatActivity {

    private RecyclerView mRecyclerView;
    private MyRecyclerAdapter mRecyclerAdapter;
    private ArrayList<FriendItem> mfriendItems;
    private SearchView searchView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_yogut);

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

            @Override
            public boolean onQueryTextChange(String newText) {
                filterList(newText);
                return true;
            }
        });
        mRecyclerView = (RecyclerView) findViewById(R.id.recyclerView);

        /* initiate adapter */
        mRecyclerAdapter = new MyRecyclerAdapter();

        /* initiate recyclerview */
        mRecyclerView.setAdapter(mRecyclerAdapter);
        mRecyclerView.setLayoutManager(new LinearLayoutManager(this));

        /* adapt data */
        mfriendItems = new ArrayList<>();

                mfriendItems.add(new FriendItem(R.drawable.yougut_blueberry,"BlueBerry Yogut","6,000원"));
                mfriendItems.add(new FriendItem(R.drawable.yougut_mango,"Mango Yogut","7,000원"));
                mfriendItems.add(new FriendItem(R.drawable.yougut_mint,"Mint Yogut","6,500원"));
                mfriendItems.add(new FriendItem(R.drawable.yougut_raspberries,"RaspBerry Yogut","7,500원"));
                mfriendItems.add(new FriendItem(R.drawable.yougut_strawberry,"StrawBerry Yogut","6,500원"));
                mfriendItems.add(new FriendItem(R.drawable.yougut_watermelon,"WaterMelon Yogut","8,500원"));

        mRecyclerAdapter.setFriendList(mfriendItems);
    }

    private void filterList(String text) {

        ArrayList<FriendItem> filteredList = new ArrayList<>();

        for(FriendItem friendItem : mfriendItems){
            if(friendItem.getName().toLowerCase().contains(text.toLowerCase())){
                filteredList.add(friendItem);
            }
        }

        if(filteredList.isEmpty()){
            Toast.makeText(this, "데이터가 없습니다", Toast.LENGTH_SHORT).show();
        }else{
            mRecyclerAdapter.setFilteredList(filteredList);
        }
    }
}

7.최종기능구현 화면

SearchView 검색으로 RecyclerView에 있는 항목이 검색가능해집니다