[Java] CardView

build.gradle (Module: app)

dependencies {
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
    implementation 'androidx.cardview:cardview:1.0.0'
}

 

 

 

 

 

 

 

cardview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.cardview.widget.CardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="120dp"
    android:layout_margin="20dp"
    android:padding="10dp"
    app:cardElevation="10dp"
    app:cardCornerRadius="10dp">

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

        <ImageView
            android:id="@+id/ivProfile"
            android:layout_width="100dp"
            android:layout_height="100dp"
            android:layout_gravity="center"
            android:layout_marginLeft="10dp"/>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:orientation="vertical"
            android:layout_marginLeft="10dp">

            <TextView
                android:id="@+id/tvName"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="James Kim"
                android:textSize="30dp"
                android:textStyle="bold"
                android:gravity="center"/>

            <TextView
                android:id="@+id/tvPhone"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="010-1234-5678"
                android:textSize="16dp"
                android:textStyle="italic"
                android:gravity="center"/>

        </LinearLayout>

    </LinearLayout>

</androidx.cardview.widget.CardView>

cardview_item.xml

 

 

 

 

 

 

 

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=".MainActivity">

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recylcerView"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"/>

    <Button
        android:id="@+id/btnAdd"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:textAllCaps="false"
        android:text="Add Person"
        android:textSize="30dp" />

</LinearLayout>

activity_main.xml

 

 

 

 

 

 

ItemCard.java

package com.jwsoft.javaproject;

public class ItemCard {
    public int imageRes;
    public int backRes;
    public String name;
    public String phone;

    public ItemCard(int imageRes,
                    int backRes,
                    String name,
                    String phone) {

        this.imageRes = imageRes;
        this.backRes = backRes;
        this.name = name;
        this.phone = phone;
    }
}

 

 

 

 

 

 

 

 

MyRecyclerViewAdapter.java

package com.jwsoft.javaproject;

import android.content.Context;
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;

public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.MyViewHolder> {

    ArrayList<ItemCard> items;

    public MyRecyclerViewAdapter(ArrayList<ItemCard> items) {
        this.items = items;
    }

    class MyViewHolder extends RecyclerView.ViewHolder {
        ImageView ivProfile;
        TextView tvName;
        TextView tvPhone;

        public MyViewHolder(View itemView) {
            super(itemView);
            ivProfile = itemView.findViewById(R.id.ivProfile);
            tvName = itemView.findViewById(R.id.tvName);
            tvPhone = itemView.findViewById(R.id.tvPhone);
        }

        public void bind(int position) {
            ivProfile.setImageResource(items.get(position).imageRes);
            ivProfile.setBackgroundResource(items.get(position).backRes);
            tvName.setText(items.get(position).name);
            tvPhone.setText(items.get(position).phone);
        }
    }

    @NonNull
    @Override
    public MyViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
        Context context = parent.getContext();
        LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View view = inflater.inflate(R.layout.cardview_item, parent, false);
        MyViewHolder viewHolder = new MyViewHolder(view);

        return viewHolder;
    }

    @Override
    public void onBindViewHolder(@NonNull MyViewHolder holder, int position) {
        holder.bind(position);
    }

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

    public void addPerson(ItemCard item) {
        items.add(item);
        notifyDataSetChanged();
    }

}

 

 

 

 

 

 

 

 

MainActivity.java

package com.jwsoft.javaproject;

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

import android.os.Bundle;
import android.view.View;
import android.widget.Button;

import java.util.ArrayList;

public class MainActivity extends AppCompatActivity {

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

        RecyclerView recyclerView = findViewById(R.id.recylcerView);
        Button btnAdd = findViewById(R.id.btnAdd);

        ArrayList<ItemCard> items = new ArrayList<>();
        for (int i=0; i<10; i++) {
            items.add(new ItemCard(
                    R.drawable.ic_launcher_foreground,
                    R.drawable.ic_launcher_background,
                    "James Kim",
                    "010-1111-1111")
            );
        }

        final MyRecyclerViewAdapter adapter = new MyRecyclerViewAdapter(items);
        recyclerView.setAdapter(adapter);
        recyclerView.setLayoutManager(new LinearLayoutManager(
                this,
                RecyclerView.VERTICAL,
                false)
        );

        btnAdd.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                adapter.addPerson(new ItemCard(
                        R.drawable.ic_launcher_foreground,
                        R.drawable.ic_launcher_background,
                        "Sonata Lee",
                        "010-2222-1111")
                );
            }
        });


    }
}

실행 결과