[Kotlin] CoordinatorLayout + AppBarLayout + Toolbar + RecyclerView

CoordinatorLayout   +   AppBarLayout   +   Toolbar   +   RecyclerView

---

 

 

build.gradle (Module: app)

dependencies {
    implementation 'com.google.android.material:material:1.1.0'
}

CoordinatorLayout, AppBarLayout 는 머티리얼 디자인이므로 의존성 추가

 

 

 

 

res/values/styles.xml

<resources>
    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

</resources>

DarkActionBar 에서 NoActionBar 로 변경 (기본 타이틀바 없어짐)

 

 

 

 

 

 

 

recyclerview_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"
    android:orientation="vertical">

    <TextView
        android:id="@+id/txtView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="혀가 길지 않은 개발자"
        android:textSize="20dp"
        android:textStyle="bold"
        android:gravity="center"
        />

</LinearLayout>

recyclerview_item

 

 

 

 

 

 

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(arrData: ArrayList<String>) : RecyclerView.Adapter<MyAdapter.MyViewHolder>() {
    var arrListData = arrData

    inner class MyViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        var textView: TextView = itemView.findViewById(R.id.txtView)
    }

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

        return MyViewHolder(view)
    }

    override fun onBindViewHolder(holder: MyViewHolder, position: Int) {
        holder.textView.text = "혀가 길지 않은 개발자 " + arrListData[position]
    }

    override fun getItemCount(): Int {
        return arrListData.size
    }

}

 

 

 

 

 

 

 

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout
    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">

    <com.google.android.material.appbar.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <androidx.appcompat.widget.Toolbar
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            app:title="혀가 길지 않은 개발자"
            app:titleTextColor="@android:color/white"
            app:subtitle="CoordinatorLayout + AppBarLayout + Toolbar"
            app:subtitleTextColor="@android:color/white"
            app:layout_scrollFlags="scroll|enterAlways"
            />

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

</androidx.coordinatorlayout.widget.CoordinatorLayout>

activity_main.xml

 

 

 

 

 

 

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

class MainActivity : AppCompatActivity() {

    private lateinit var recyclerView: RecyclerView

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

        var arrListStrData = ArrayList<String>()
        for (i in 1..100) {
            arrListStrData.add(i.toString())
        }
        val adapter = MyAdapter(arrListStrData)
        recyclerView = findViewById(R.id.recyclerView)
        recyclerView.layoutManager = LinearLayoutManager(this, RecyclerView.VERTICAL, false)
        recyclerView.adapter = adapter
    }
}

실행 결과