Viewpager2 + Fragment + RecyclerView

푸른하늘·2022년 5월 27일

<시현 연상>

🍎구조 설명

🍎간단한 설명

Single Activity / Single Fragment
배달의 민족 앱을 간단한 기능을 모방해서 만들어 보았습니다.
Fragment 안에 newInstance Bundle을 활용하여 Fragment의 재사용성을 활용 했습니다.
adapter 에 들어오는 choice(Int) 마다 Adapter에 다른 DB를 삽입하여 새로운 데이터를 받도록 하였습니다.

🍎구현 순서

acivity_main.xml

fragment_my.xml

menu_items.xml

RecipeCateogory

MyFragment

PagerFragmentStateAdapter

MainActivity

MyFragmentAdapter

Menu_lists

🍎필요한 라이브러리

 viewBinding{
        enabled true
    }

🍎activity_main

<?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=".screen.main.MainActivity">
    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/toolbarAppbar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toBottomOf="parent"
        android:elevation="0dp">

    </com.google.android.material.appbar.AppBarLayout>
   <androidx.appcompat.widget.Toolbar
       android:id="@+id/toolbar"
       style="?attr/toolbarStyle"
       android:layout_width="match_parent"
       android:layout_height="wrap_content"
       app:elevation="0dp"
       android:fitsSystemWindows="false"
       app:layout_constraintStart_toStartOf="parent"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintTop_toTopOf="parent"
       app:contentInsetStart="0dp"

       app:contentInsetEnd="0dp">

       <ImageView
           android:id="@+id/backBtn"

           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:src="@drawable/ic_baseline_arrow_back_24"/>
       <TextView
           android:text="테마별 레시피"
           android:textStyle="bold"
           android:textSize="20sp"
           android:layout_gravity="center_horizontal"
           android:layout_width="wrap_content"

           android:layout_height="wrap_content"/>

       <ImageView
           android:src="@drawable/ic_baseline_search_24"
           android:layout_width="wrap_content"
           android:layout_height="wrap_content"
           android:layout_gravity="right"
           android:layout_marginRight="10dp"
           />
   </androidx.appcompat.widget.Toolbar>
    <com.google.android.material.appbar.AppBarLayout
        android:id="@+id/appbarlayout"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:theme="@style/Theme.AppCompat.Light.DarkActionBar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/toolbar"
        >

        <com.google.android.material.tabs.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="40dp"
            android:background="@color/white"
            app:tabGravity="fill"
            app:tabIndicatorFullWidth="false"
            app:tabMaxWidth="0dp"
            app:tabMode="auto"
            app:tabIndicatorColor="@color/design_default_color_primary"
            app:tabRippleColor="@color/design_default_color_primary"
            app:tabSelectedTextColor="@color/design_default_color_primary"
            app:tabTextColor="@color/black" />

    </com.google.android.material.appbar.AppBarLayout>
    <androidx.viewpager2.widget.ViewPager2
        android:id="@+id/viewpager"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="horizontal"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/appbarlayout" />


</androidx.constraintlayout.widget.ConstraintLayout>

🍎fragment_my

<?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=".screen.myFragment.MyFragment">



        <androidx.recyclerview.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

🍎menu_item

<?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="wrap_content">


    <ImageView
        android:id="@+id/menuImageView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="10dp"
        android:layout_marginTop="10dp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:src="@drawable/ic_baseline_search_24" />

    <TextView
        android:id="@+id/menuTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginLeft="20dp"
        app:layout_constraintStart_toEndOf="@id/menuImageView"
        app:layout_constraintTop_toTopOf="@id/menuImageView"
        tools:text="hello" />

    <TextView
        android:id="@+id/menuDescription"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="right"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/menuTextView"
        app:layout_constraintTop_toTopOf="@id/menuImageView"
        tools:text="hello my name is ck" />

</androidx.constraintlayout.widget.ConstraintLayout>

🍎RecipeCategory

enum class RecipeCateogry(
    @StringRes val categoryNameId: Int,
    @StringRes val categoryTypeId: Int
) {
    MAIN_FOOD(R.string.main_food, R.string.main_food_type),
    SUB_FOOD (R.string.sub_food, R.string.sub_food_type),
    DUMPLING_FOOD(R.string.dumpling_food, R.string.dumpling_food_type),
    KOREAN_FOOD(R.string.korean_food, R.string.korean_food_type),
    CHINESE_FOOD(R.string.chinese_food, R.string.chinese_food_type),
    ASIAN_EUROPE_FOOD(R.string.asian_europe_food, R.string.asian_europe_food_type),
    JAPANESE_FOOD(R.string.japanese_food, R.string.japanese_food_type),
    CAFE_DESSERT(R.string.cafe_dessert, R.string.cafe_dessert_type),



}

🍏R.string.recipe_cateory.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="main_food">메인요리</string>
    <string name="sub_food">서브요리</string>
    <string name="dumpling_food">분식</string>
    <string name="korean_food">한식</string>
    <string name="chinese_food">중식</string>
    <string name="asian_europe_food">아시안•양식</string>
    <string name="japanese_food">일식•돈까스•회</string>
    <string name="cafe_dessert">카페•디저트</string>


    <string name="main_food_type">메인요리</string>
    <string name="sub_food_type">서브요리</string>
    <string name="dumpling_food_type">분식</string>
    <string name="korean_food_type">한식</string>
    <string name="chinese_food_type">중식</string>
    <string name="asian_europe_food_type">아시안;양식</string>
    <string name="japanese_food_type">일식;돈까스;회</string>
    <string name="cafe_dessert_type">카페;디저트</string>

</resources>

🍎MyFragment

class MyFragment : BaseFragment<FragmentMyBinding>(FragmentMyBinding::inflate) {



    override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
        super.onViewCreated(view, savedInstanceState)

        val choice =arguments?.getInt(MENUCATEGORY_ITEM)
        val viewpager = binding.recyclerView

        viewpager.layoutManager = LinearLayoutManager(activity, LinearLayoutManager.VERTICAL, false)


        choice?.let {
            when(choice){
                0 -> viewpager.adapter = MyFragmentAdapter(MenuLists.mainFood)
                1 -> viewpager.adapter = MyFragmentAdapter(MenuLists.subFood)
                2 -> viewpager.adapter = MyFragmentAdapter(MenuLists.mainFood)
                3 -> viewpager.adapter = MyFragmentAdapter(MenuLists.subFood)
                4 -> viewpager.adapter = MyFragmentAdapter(MenuLists.mainFood)
                5 -> viewpager.adapter = MyFragmentAdapter(MenuLists.subFood)
                6 -> viewpager.adapter = MyFragmentAdapter(MenuLists.mainFood)
                7 -> viewpager.adapter = MyFragmentAdapter(MenuLists.subFood)
                else -> viewpager.adapter = MyFragmentAdapter(MenuLists.mainFood)


            }
        }



    }


    companion object {
        val MENUCATEGORY_ITEM = "menucateogry_item"
        @JvmStatic
        fun newInstance(position : Int) =
            MyFragment().apply {
                arguments = Bundle().apply {
                    putInt(MENUCATEGORY_ITEM, position)
                }
            }
    }
}

🍎PagerFragmentStateAdapter

class PagerFragmentStateAdapter(fa: FragmentActivity): FragmentStateAdapter(fa) {
    private val NUM_PAGES = 8

    override fun getItemCount(): Int = NUM_PAGES

    override fun createFragment(position: Int) = MyFragment.newInstance(position)
}

🍎MainActivity

class MainActivity : AppCompatActivity() {

    private lateinit var binding: ActivityMainBinding

    private val tabIcon = listOf(
    // 임의로 원하는 아이콘(사진) 찾아서 삽입
        R.drawable.ic_launcher_foreground,
        R.drawable.ic_baseline_access_time_filled_24,
        R.drawable.ic_baseline_60fps_24
    )
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        binding = ActivityMainBinding.inflate(layoutInflater)
        setContentView(binding.root)

        binding.viewpager.apply{
            adapter = PagerFragmentStateAdapter(context as FragmentActivity)
        }
		//tablayout에 들어갈 recipeGategory 삽입
        TabLayoutMediator(binding.tabs,binding.viewpager){tab, position ->
           tab.setText(RecipeCateogry.values()[position].categoryNameId)
        }.attach()

    }
}

MyFragmentAdapter

class MyFragmentAdapter(private val menuList : List<Menu>) : RecyclerView.Adapter<MyFragmentAdapter.MenuViewHolder>(){

    inner class MenuViewHolder(private val binding: MenuItemsBinding): RecyclerView.ViewHolder(binding.root){
        fun bind(menu : Menu){
            binding.menuImageView.setImageResource(menu.menuImage)
            binding.menuDescription.text = menu.description
            binding.menuTextView.text = menu.title
        }

    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MenuViewHolder {
        return  MenuViewHolder(
            MenuItemsBinding.inflate(LayoutInflater.from(parent.context),parent,false)
        )
    }

    override fun onBindViewHolder(holder: MenuViewHolder, position: Int) {
      holder.bind(menuList[position])
    }

    override fun getItemCount(): Int  = menuList.size
}

MenuLists

object MenuLists {

    val mainFood = listOf(
        Menu(R.drawable.ic_baseline_60fps_24,"메인푸드","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
        Menu(R.drawable.ic_baseline_60fps_24,"김치찌개","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
        Menu(R.drawable.ic_baseline_60fps_24,"김치찌개","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
        )

    val subFood = listOf(
        Menu(R.drawable.ic_baseline_60fps_24,"서브푸드","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
        Menu(R.drawable.ic_baseline_60fps_24,"김치찌개","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
        Menu(R.drawable.ic_baseline_60fps_24,"김치찌개","너무너무 맛있게  만든 김치 찌개 먹을사랑?"),
        Menu(R.drawable.ic_baseline_rowing_24,"제육볶음","제육볶음"),
    )
}