[Kotlin] NestedScrollView

build.gradle (Module:app)

dependencies {
    // RecyclerView
    implementation 'androidx.recyclerview:recyclerview:1.1.0'
}

 

 

 

 

 

 

 

recyclerview_item.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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">

    <TextView
        android:id="@+id/tvName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="James Kim"
        android:textSize="26dp"
        android:textAlignment="center"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

recyclerview_item.xml

 

 

 

 

 

MyAdapter.kt

package com.jwsoft.kotlinproject

import android.content.Context
import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView

class MyAdapter : RecyclerView.Adapter<MyAdapter.MyViewHolder>() {

    inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        lateinit var tvName: TextView

        fun bind(position: Int) {
            tvName = itemView.findViewById(R.id.tvName)
            tvName.text = "James Kim $position"
        }
    }

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

        return MyViewHolder(view)
    }

    override fun getItemCount(): Int {
        return 10
    }

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

}

 

 

 

 

 

 

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    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.core.widget.NestedScrollView
        android:layout_width="match_parent"
        android:layout_height="match_parent" >

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

            <ImageView
                android:layout_width="match_parent"
                android:layout_height="300dp"
                android:src="@drawable/ic_launcher_foreground"
                android:background="@drawable/ic_launcher_background"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="contents 1"
                android:textStyle="bold"
                android:textSize="30dp"
                android:layout_marginTop="30dp"/>

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/rvContentOne"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_margin="30dp"
                tools:listitem="@layout/recyclerview_item"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="contents 2"
                android:textStyle="bold"
                android:textSize="30dp"
                android:layout_marginTop="30dp"/>

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/rvContentTwo"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_margin="30dp"
                tools:listitem="@layout/recyclerview_item"/>

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="contents 3"
                android:textStyle="bold"
                android:textSize="30dp"
                android:layout_marginTop="30dp"/>

            <androidx.recyclerview.widget.RecyclerView
                android:id="@+id/rvContentThree"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:layout_margin="30dp"
                tools:listitem="@layout/recyclerview_item"/>

        </LinearLayout>

    </androidx.core.widget.NestedScrollView>

</androidx.constraintlayout.widget.ConstraintLayout>

activity_main.xml

 

 

 

 

 

 

MainActivity.kt

package com.jwsoft.kotlinproject

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.widget.Toast
import androidx.recyclerview.widget.DividerItemDecoration
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)

        rvContentOne.adapter = MyAdapter()
        rvContentOne.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
        rvContentOne.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)

        rvContentTwo.adapter = MyAdapter()
        rvContentTwo.addItemDecoration(DividerItemDecoration(this, RecyclerView.HORIZONTAL))
        rvContentTwo.layoutManager = LinearLayoutManager(this, RecyclerView.HORIZONTAL, false)

        rvContentThree.adapter = MyAdapter()
        rvContentThree.addItemDecoration(DividerItemDecoration(this, RecyclerView.VERTICAL))
        rvContentThree.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)

    }
}

실행 결과