TIL (04.15)

CodeKata

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[프로그래머스_Kotlin] 연속 부분 수열 합의 개수

 

 

 

 

 

 

 

스탠다드반 과제

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Multi-View RecyclerView

 

data class

@Parcelize
data class Data(
    val type:Int,

    val tvName: String,
    val num1:Int,
    val num2:Int,
    val num3: Int,
    val num4: Int,
    val YM: String,
    val price: Double
):Parcelable

 

DataList

//DataMode
const val item_card1 = 1
const val item_card2 = 2
const val item_card3 = 3

fun dataList(): MutableList<Data> {
    return mutableListOf(
        Data(
            type = item_card1,
            tvName = "Anderson",
            num1 = 2423,
            num2 = 3581,
            num3 = 9503,
            num4 = 2412,
            YM = "21/24",
            price = 3100.30
        ),
        Data(
            type = item_card2,
            tvName = "John",
            num1 = 1234,
            num2 = 5678,
            num3 = 9876,
            num4 = 5432,
            YM = "21/24",
            price = 2459.60
        ),
        Data(
            type = item_card3,
            tvName = "Mash",
            num1 = 4564,
            num2 = 4564,
            num3 = 7895,
            num4 = 4125,
            YM = "21/24",
            price = 4567.20
        ),
    )
}

 

Adapter

class DataAdapter(private val data: MutableList<Data>) : RecyclerView.Adapter<RecyclerView.ViewHolder>() {


    interface ItemClick{
        fun onClick(view:View, position: Int)
    }
    var itemClick:ItemClick? = null


    override fun getItemViewType(position: Int): Int {
        return data[position].type
    }
    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
        val view: View?
        return when (viewType) { //todo sealed class -> else 제거해보기
            item_card1 -> {
                val binding = ItemCard1Binding.inflate(LayoutInflater.from(parent.context), parent, false)
                Card1ViewHolder(binding)
            }

            item_card2 -> {
                val binding = ItemCard2Binding.inflate(LayoutInflater.from(parent.context), parent, false)
                Card2ViewHolder(binding)
            }

            else -> { //item_card3
                val binding = ItemCard3Binding.inflate(LayoutInflater.from(parent.context), parent, false)
                Card3ViewHolder(binding)
            }
        }
    }

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

    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
        when (data[position].type) {
            item_card1 -> {
                (holder as Card1ViewHolder).bind(data[position])
                holder.setIsRecyclable(false)
                holder.itemView.setOnClickListener {
                    itemClick?.onClick(it,position)
                }


            }

            item_card2 -> {
                (holder as Card2ViewHolder).bind(data[position])
                holder.setIsRecyclable(false)
                holder.itemView.setOnClickListener {
                    itemClick?.onClick(it,position)
                }
            }

            else -> { //item_card3
                (holder as Card3ViewHolder).bind(data[position])
                holder.setIsRecyclable(false)
                holder.itemView.setOnClickListener {
                    itemClick?.onClick(it,position)
                }
            }
        }
    }

}

 

MainActivity

class MainActivity : AppCompatActivity() {
    private lateinit var binding: ActivityMainBinding
    override fun onCreate(savedInstanceState: Bundle?) {
        binding = ActivityMainBinding.inflate(layoutInflater)
        super.onCreate(savedInstanceState)
        enableEdgeToEdge()
        setContentView(binding.root)
        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
            val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
            v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
            insets
        }
        showTotalPrice()
        recyclerViewDivider()
        initRecyclerView()


    }

    //item 간격 추가
    private fun recyclerViewDivider() {
        binding.recyclerView.addItemDecoration(object : ItemDecoration() {
            override fun getItemOffsets(outRect: Rect, view: View, parent: RecyclerView, state: RecyclerView.State) {
                super.getItemOffsets(outRect, view, parent, state)
                outRect.bottom = 40
            }
        })
    }

    private fun initRecyclerView() {
        val adapter = DataAdapter(dataList())
        val dataList = dataList()
        binding.recyclerView.adapter = adapter
        binding.recyclerView.layoutManager = LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false)

        adapter.itemClick = object : DataAdapter.ItemClick {
            override fun onClick(view: View, position: Int) {
                val selectedData = dataList[position]
                val intent = Intent(this@MainActivity, DetailActivity::class.java)
                intent.putExtra("selectedData", selectedData)
                startActivity(intent)
            }
        }
    }

    private fun showTotalPrice() {
        val totalPrice = dataList().sumOf { it.price }
        val decimal = DecimalFormat("#,##,###.00")
        binding.tvDollar.text = decimal.format(totalPrice)
    }
}

 

 

 

xml

이렇게 똑같은 총 3개의 itemView 생성

<?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:tool="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="200dp"
    android:layout_marginTop="20dp"
    android:background="@drawable/card_radius"
    android:backgroundTint="@color/myBlue">

    <TextView
        android:id="@+id/tvName"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="15dp"
        android:textColor="@color/white"
        android:textSize="18sp"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tool:text="Anderson" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginEnd="20dp"
        android:text="A Debit Card"
        android:textColor="@color/white"
        android:textSize="18sp"
        app:layout_constraintBottom_toBottomOf="@id/tvName"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@id/tvName" />

    <TextView
        android:id="@+id/tvCardNum1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:layout_marginTop="5dp"
        android:textColor="@color/white"
        android:textSize="23sp"
        android:textStyle="bold"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@id/tvName"
        tool:text="2423" />

    <TextView
        android:id="@+id/tvCardNum2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:layout_marginTop="5dp"
        android:textColor="@color/white"
        android:textSize="23sp"
        android:textStyle="bold"
        app:layout_constraintStart_toEndOf="@id/tvCardNum1"
        app:layout_constraintTop_toBottomOf="@id/tvName"
        tool:text="2423" />

    <TextView
        android:id="@+id/tvCardNum3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:layout_marginTop="5dp"
        android:textColor="@color/white"
        android:textSize="23sp"
        android:textStyle="bold"
        app:layout_constraintStart_toEndOf="@id/tvCardNum2"
        app:layout_constraintTop_toBottomOf="@id/tvName"
        tool:text="2423" />

    <TextView
        android:id="@+id/tvCardNum4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:layout_marginTop="5dp"
        android:textColor="@color/white"
        android:textSize="23sp"
        android:textStyle="bold"
        app:layout_constraintStart_toEndOf="@id/tvCardNum3"
        app:layout_constraintTop_toBottomOf="@id/tvName"
        tool:text="2423" />

    <TextView
        android:id="@+id/tvYM"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="15dp"
        android:layout_marginTop="5dp"
        android:layout_marginEnd="13dp"
        android:textColor="@color/white"
        android:textSize="20sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="@id/tvCardNum1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="@id/tvCardNum1"
        tool:text="21 / 24" />


    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Your Balance"
        android:textColor="@color/white"
        app:layout_constraintStart_toStartOf="@id/tvCardNum1"
        app:layout_constraintTop_toBottomOf="@id/tvCardNum1" />

    <TextView
        android:id="@+id/won"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="20dp"
        android:text="$"
        android:textColor="@color/white"
        android:textSize="30sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="@id/tvCardNum1" />

    <TextView
        android:id="@+id/tvPrice"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="5dp"
        android:textColor="@color/white"
        android:textSize="30sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="@id/won"
        app:layout_constraintStart_toEndOf="@id/won"
        tool:text="3,100.30" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Visa"
        android:textColor="@color/white"
        android:textSize="20sp"
        app:layout_constraintBottom_toBottomOf="@id/won"
        app:layout_constraintEnd_toEndOf="@id/tvYM" />


</androidx.constraintlayout.widget.ConstraintLayout>

문제에 해당해서만 풀었던 것 같다.

서로 데이터 형식이 다를 수도 있는 점을 못한 것 같아서 다시 만들고 있다.