[Kotlin] 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.kt

package com.jwsoft.kotlinproject

data class ItemCard(var imageRes: Int,
                    var backgroundRes: Int,
                    var name: String,
                    var phone: String)

 

 

 

 

 

 

 

MyRecyclerView.kt

package com.jwsoft.kotlinproject

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.recyclerview.widget.RecyclerView

class MyRecyclerView(items: ArrayList<ItemCard>) : RecyclerView.Adapter<MyRecyclerView.MyViewHolder>() {

    var items = items

    inner class MyViewHolder(itemView: View): RecyclerView.ViewHolder(itemView) {
        var ivProfile: ImageView = itemView.findViewById(R.id.ivProfile)
        var tvName: TextView = itemView.findViewById(R.id.tvName)
        var tvPhone: TextView = itemView.findViewById(R.id.tvPhone)

        fun bind(position: Int) {
            ivProfile.setImageResource(items[position].imageRes)
            ivProfile.setBackgroundResource(items[position].backgroundRes)
            tvName.text = items[position].name
            tvPhone.text = items[position].phone
        }
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MyViewHolder {
        val context = parent.context
        val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater
        val view: View = inflater.inflate(R.layout.cardview_item, parent, false)

        return MyViewHolder(view)
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.bind(position)
    }

    override fun getItemCount(): Int = items.size

    fun addPerson(item: ItemCard) {
        items.add(item)
    }

}

 

 

 

 

 

 

 

 

MainActivity.kt

package com.jwsoft.kotlinproject

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        var items: ArrayList<ItemCard> = ArrayList()
        for (i in 0 until 10) {
            items.add(ItemCard(
                R.drawable.ic_launcher_foreground,
                R.drawable.ic_launcher_background,
                "James Kim $i",
                "010-1234-5678")
            )
        }

        var adapter = MyRecyclerView(items)
        recylcerView.adapter = adapter
        recylcerView.layoutManager = LinearLayoutManager(
            this,
            RecyclerView.VERTICAL,
            false
        )

        btnAdd.setOnClickListener {
            adapter.addPerson(ItemCard(
                R.drawable.ic_launcher_foreground,
                R.drawable.ic_launcher_background,
                "Jason Park",
                "010-1111-1111")
            )
            adapter.notifyDataSetChanged()
        }

    }
}

실행 결과