• Naver Map API

  • ViewPager2

  • FrameLayout

  • CoordinatotLayout

  • BottomSheetBehavior

  • Retrofit

  • Gilde


ViewPager2


Jectpack Library에 포함되어 있으며 RecyclerView로 구현되어있다.

내부적으로 들어가는 item.xml 은 무조건 match parent 속성을 가져야 한다!!


  • activity_main.xml 파일에 객체 추가
<!--activity_main.xml-->
<androidx.viewpager2.widget.ViewPager2
    android:id="@+id/houseViewPager"
    android:layout_width="match_parent"
    android:layout_height="100dp"
    android:layout_gravity="bottom"
    android:layout_marginBottom="120dp"
    android:orientation="horizontal" />


  • item_house_for_viewpager.xml 파일 생성
<!--item_house_for_viewpager.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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginHorizontal="30dp"
    android:background="@color/white"
    app:cardCornerRadius="16dp"
    tools:layout_height="100dp">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <ImageView
            android:id="@+id/thumbnailImageView"
            android:layout_width="100dp"
            android:layout_height="100dp"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/titleTextView"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:layout_marginTop="12dp"
            android:layout_marginEnd="12dp"
            android:layout_marginBottom="12dp"
            android:maxLines="2"
            android:textColor="@color/black"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/thumbnailImageView"
            app:layout_constraintTop_toTopOf="parent"
            tools:text="강남역 최저가!!강남역 최저가!!강남역 최저가!!강남역 최저가!!강남역 최저가!!강남역 최저가!!" />

        <TextView
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="12dp"
            android:layout_marginEnd="12dp"
            android:maxLines="1"    
            android:textColor="@color/black"
            android:textStyle="bold"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toEndOf="@id/thumbnailImageView"
            app:layout_constraintTop_toBottomOf="@id/titleTextView"
            tools:text="12,000원" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</androidx.cardview.widget.CardView>


  • HouseViewPagerAdapter.kt 생성


// HouseViewPagerAdapter.kt
class HouseViewPagerAdapter:ListAdapter<HouseModel, HouseViewPagerAdapter.ViewHolder>(diffUtil) {
    inner class ViewHolder(private val binding: ItemHouseForViewpagerBinding):RecyclerView.ViewHolder(binding.root){

        fun bind(house: HouseModel){
            binding.titleTextView.text = house.title
            binding.priceTextView.text = house.price

            Glide.with(binding.thumbnailImageView.context)
                .load(house.imgUrl)
                .into(binding.thumbnailImageView)
        }
    }

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

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

    companion object {
        val diffUtil = object : DiffUtil.ItemCallback<HouseModel>() {
            override fun areItemsTheSame(oldItem: HouseModel, newItem: HouseModel): Boolean {
                return oldItem.id == newItem.id
            }

            override fun areContentsTheSame(oldItem: HouseModel, newItem: HouseModel): Boolean {
                return oldItem == newItem
            }
        }
    }
}


  • MainActivity.kt 에서 ViewPager 사용


어뎁터, 뷰페이터 객체를 초기화, 레트로핏 통신 부분에서 리스트 입력

// MainActivity.kt

private val viewPager by lazy{ binding.houseViewPager }

private val viewPagerAdapter = HouseViewPagerAdapter()

...

viewPager.adapter = viewPagerAdapter

...

// 레트로핏 결과 받으면
response.body()?.let{ houseDto ->
    // ViewPager 객체에 리스트 입력
    viewPagerAdapter.submitList(houseDto.items)

    ...
}


결과 화면