12. 검색 액티비티에 카드 레이아웃 추가

레이아웃 추가

검색 기능을 추가하기 전에 몇 개의 노출시킬 카드 아이템을 만들려고 한다

아이템 내용은 임시로 하드코딩하려고 한다

예상 레이아웃

 

아이템 레이아웃 생성 (item_city_card.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"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_margin="8dp"
    app:cardCornerRadius="8dp"
    app:cardElevation="8dp">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="16dp">

        <!-- 도시 이름 -->
        <TextView
            android:id="@+id/cityName"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="서울"
            android:textSize="18sp"
            android:textStyle="bold"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintStart_toStartOf="parent"/>

        <!-- 날씨 아이콘 -->
        <ImageView
            android:id="@+id/weatherIcon"
            android:layout_width="40dp"
            android:layout_height="40dp"
            android:src="@drawable/sunny_128"
            app:layout_constraintTop_toTopOf="parent"
            app:layout_constraintEnd_toEndOf="parent"/>

        <!-- 현재 온도 -->
        <TextView
            android:id="@+id/temperature"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="18°C"
            android:textSize="16sp"
            app:layout_constraintTop_toBottomOf="@id/cityName"
            app:layout_constraintStart_toStartOf="parent"/>

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

아이템 레이아웃

 

아이템을 담을 리사이클러뷰 추가 (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">

    <!-- 검색 결과 리스트 -->
    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/recyclerView_search"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:padding="8dp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        tools:listitem="@layout/item_city_card" />

</androidx.constraintlayout.widget.ConstraintLayout>

리스트 레이아웃

---

데이터 클래스 생성 (CityWeatherInfo)

package com.example.weatherapp.ui.model

data class CityWeatherInfo (
    val cityName: String,    // 도시 이름
    val weatherIconResId: Int, // 날씨 아이콘 리소스 ID
    val temperature: String  // 온도 정보
)

 

어댑터 생성 (CityWeatherAdapter)

package com.example.weatherapp.ui.adapter

import android.view.LayoutInflater
import android.view.View
import android.view.ViewGroup
import android.widget.ImageView
import android.widget.TextView
import androidx.recyclerview.widget.RecyclerView
import com.example.weatherapp.R
import com.example.weatherapp.ui.model.CityWeatherInfo

class CityWeatherAdapter (private var cityList: List<CityWeatherInfo>) :
    RecyclerView.Adapter<CityWeatherAdapter.CityViewHolder>() {

    inner class CityViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
        val cityName: TextView = itemView.findViewById(R.id.cityName)
        val weatherIcon: ImageView = itemView.findViewById(R.id.weatherIcon)
        val temperature: TextView = itemView.findViewById(R.id.temperature)
    }

    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): CityViewHolder {
        val view = LayoutInflater.from(parent.context).inflate(R.layout.item_city_card, parent, false)
        return CityViewHolder(view)
    }

    override fun onBindViewHolder(holder: CityViewHolder, position: Int) {
        val cityWeather = cityList[position]
        holder.cityName.text = cityWeather.cityName
        holder.weatherIcon.setImageResource(cityWeather.weatherIconResId)
        holder.temperature.text = cityWeather.temperature
    }

    override fun getItemCount() = cityList.size

    // 데이터 업데이트 기능
    fun updateList(newList: List<CityWeatherInfo>) {
        cityList = newList
        notifyDataSetChanged()
    }

}

 

액티비티에서 리스트 설정 (SearchActiviy)

package com.example.weatherapp

import android.os.Bundle
import androidx.appcompat.app.AppCompatActivity
import androidx.recyclerview.widget.LinearLayoutManager
import androidx.recyclerview.widget.RecyclerView
import com.example.weatherapp.ui.adapter.CityWeatherAdapter
import com.example.weatherapp.ui.model.CityWeatherInfo

class SearchActivity : AppCompatActivity() {

    private lateinit var recyclerView: RecyclerView
    private lateinit var adapter: CityWeatherAdapter
    private val cityWeatherList = mutableListOf<CityWeatherInfo>()

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

        recyclerView = findViewById(R.id.recyclerView_search)

        // RecyclerView 설정
        adapter = CityWeatherAdapter(cityWeatherList)
        recyclerView.layoutManager = LinearLayoutManager(this)
        recyclerView.adapter = adapter

        // 데이터 추가
        loadCityWeatherData()
    }

    private fun loadCityWeatherData() {
        cityWeatherList.add(CityWeatherInfo("현재 위치", R.drawable.sunny_128, "22°C"))
        cityWeatherList.add(CityWeatherInfo("서울", R.drawable.cloudy_128, "18°C"))
        cityWeatherList.add(CityWeatherInfo("부산", R.drawable.rainy_128, "20°C"))
        cityWeatherList.add(CityWeatherInfo("제주", R.drawable.sunny_128, "25°C"))
        cityWeatherList.add(CityWeatherInfo("대구", R.drawable.cloudy_128, "21°C"))

        // Adapter에 데이터 변경 알림
        adapter.updateList(cityWeatherList)
    }
}

 

결과

결과