안드로이드프로그래밍 RecyclerView 예제 (안드로이드 예제)

main.xml

<?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"
    tools:context=".MainActivity">


    <androidx.recyclerview.widget.RecyclerView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/recyclerView"/>

</LinearLayout>

person.java

package com.cookandroid.recycler_ex03;

public class Person {
    String name;
    String mobile;


    public Person(String name, String mobile) {
        this.name = name;
        this.mobile = mobile;
    }

    public String getName(){
        return name;
    }

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

    public String getMobile(){
        return mobile;
    }
    public void setMobile(){
        this.mobile=mobile;
    }

}

personadapter.java

package com.cookandroid.recycler_ex03;

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

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

import java.util.ArrayList;

public class PersonAdapter extends RecyclerView.Adapter<PersonAdapter.ViewHolder> {
    ArrayList<Person> items =new ArrayList<>();

    @NonNull
    @Override
    public ViewHolder onCreateViewHolder(@NonNull ViewGroup viewGroup, int viewType) {
        LayoutInflater inflater = LayoutInflater.from(viewGroup.getContext());
        View itemView = inflater.inflate(R.layout.person_item,viewGroup,false);
        return new ViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(@NonNull ViewHolder viewHolder, int position) {
        Person item = items.get(position);
        viewHolder.setItem(item); //왜오류
    }

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

    static class ViewHolder extends RecyclerView.ViewHolder{
        TextView textView;
        TextView textView2;

        public ViewHolder(View itemVIew){
            super(itemVIew);

            textView= itemVIew.findViewById(R.id.textView);
            textView2= itemVIew.findViewById(R.id.textView2);

        }

        public void setItem(Person item){
            textView.setText(item.getName());
            textView2.setText(item.getMobile());
        }
    }
    public void addItem(Person item){
        items.add(item);
    }
    public void setItems(ArrayList<Person>items){
        this.items = items;
    }
    public Person getItem(int position){
        return items.get(position);
    }
    public void setItem(int position,Person item){
        items.set(position,item);
    }
}

person_item.xml

<?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"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:orientation="vertical">


    <androidx.cardview.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:cardBackgroundColor="#FFFFFFFF"
        app:cardCornerRadius="10dp"
        app:cardElevation="5dp"
        app:cardUseCompatPadding="true">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <ImageView
                android:id="@+id/imageView"
                android:layout_width="80dp"
                android:layout_height="80dp"
                android:padding="5dp"
                app:srcCompat="@mipmap/ic_launcher"/>
            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_margin="5dp"
                android:layout_weight="1"
                android:orientation="vertical">

                <TextView
                    android:id="@+id/textView"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="이름"
                    android:textSize="30sp"/>

                <TextView
                    android:id="@+id/textView2"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:text="전화번호"
                    android:textColor="#FF0000FF"
                    android:textSize="25sp"/>

            </LinearLayout>
        </LinearLayout>
    </androidx.cardview.widget.CardView>

</LinearLayout>

main.java

package com.cookandroid.recycler_ex03;

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

import android.os.Bundle;
import android.widget.LinearLayout;

public class MainActivity extends AppCompatActivity {

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

        RecyclerView recyclerView= findViewById(R.id.recyclerView);

        LinearLayoutManager layoutManager =
                new LinearLayoutManager(this,LinearLayoutManager.VERTICAL,false);
        recyclerView.setLayoutManager(layoutManager);
        PersonAdapter adapter = new PersonAdapter();

        adapter.addItem(new Person("김민수","010-1000-1000"));
        adapter.addItem(new Person("김하늘","010-2000-2000"));
        adapter.addItem(new Person("홍길동","010-4000-3000"));
        adapter.addItem(new Person("홍길동","010-5000-3000"));
        adapter.addItem(new Person("홍길동","010-6000-3000"));
        adapter.addItem(new Person("홍길동","010-7000-3000"));
        adapter.addItem(new Person("홍길동","010-8000-3000"));

        recyclerView.setAdapter(adapter);
    }
}

리사이클러뷰 예제