[WEEK5] : 공공 API 연결

.gitignore

@@ -14,3 +14,4 @@ google-services.json
 .externalNativeBuild
 .cxx
 local.properties
+/app/src/main/java/com/example/gdsc/weather/ApiKey.kt

app/src/main/AndroidManifest.xml

@@ -1,7 +1,9 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
+
     <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
@@ -11,19 +13,27 @@
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.GDSC"
-        tools:targetApi="31">
+        tools:targetApi="31"
+        android:usesCleartextTraffic="true">
         <activity
-            android:name=".NavigationActivity"
+            android:name=".weather.WeatherActivity"
             android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
         </activity>
+
+        <activity
+            android:name=".NavigationActivity"
+            android:exported="true"></activity>
         <activity
             android:name=".FoodActivity"
-            android:exported="true">
-        </activity>
+            android:exported="true"></activity>
         <activity
             android:name=".UiActivity"
-            android:exported="true">
-        </activity>
+            android:exported="true"></activity>
         <activity
             android:name=".member.MemberActivity"
             android:exported="true">

app/src/main/java/com/example/gdsc/weather/WeatherActivity.kt

@@ -0,0 +1,39 @@
+package com.example.gdsc.weather
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.util.Log
+import com.example.gdsc.databinding.ActivityWeatherBinding
+import retrofit2.Call
+import retrofit2.Response
+
+class WeatherActivity : AppCompatActivity() {
+    private lateinit var weatherBinding: ActivityWeatherBinding
+    private val getWeatherService = WeatherServicePool.getWeather
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        weatherBinding = ActivityWeatherBinding.inflate(layoutInflater)
+        setContentView(weatherBinding.root)
+        getWeatherApi()
+    }
+    private fun getWeatherApi() {
+        getWeatherService.getWeather().enqueue(object : retrofit2.Callback<WeatherDto> {
+            override fun onResponse(
+                call: Call<WeatherDto>, response: Response<WeatherDto>
+            ) {
+                if (response.isSuccessful) {
+                    response.body()?.let {
+                        weatherBinding.tvResult.text = response.body().toString()
+                        Log.d("result", it.toString())
+                    }
+                } else {
+                    Log.d("error", "실패한 응답")
+                }
+            }
+
+            override fun onFailure(call: Call<WeatherDto>, t: Throwable) {
+                t.message?.let { Log.d("error", it) } ?: "서버통신 실패(응답값 X)"
+            }
+        })
+    }
+}

app/src/main/java/com/example/gdsc/weather/WeatherApiFactory.kt

@@ -0,0 +1,23 @@
+package com.example.gdsc.weather
+
+import kotlinx.serialization.json.Json
+import retrofit2.Retrofit
+import com.jakewharton.retrofit2.converter.kotlinx.serialization.asConverterFactory
+import okhttp3.MediaType.Companion.toMediaType
+object WeatherApiFactory {
+    private const val BASE_URL =
+        "http://apis.data.go.kr/1360000/VilageFcstInfoService_2.0/"
+
+    val retrofit: Retrofit by lazy {
+        Retrofit.Builder()
+            .baseUrl(BASE_URL)
+            .addConverterFactory(Json.asConverterFactory("application/json".toMediaType()))
+            .build()
+    }
+}
+
+object WeatherServicePool {
+    val getWeather = WeatherApiFactory.retrofit.create(WeatherService::class.java)
+}
+
+

app/src/main/java/com/example/gdsc/weather/WeatherDto.kt

@@ -0,0 +1,36 @@
+package com.example.gdsc.weather
+
+import kotlinx.serialization.Serializable
+@Serializable
+data class WeatherDto( val response: Response )
+@Serializable
+data class Response(
+    val header: Header,
+    val body: Body
+)
+@Serializable
+data class Header(
+    val resultCode : String,
+    val resultMsg : String
+)
+@Serializable
+data class Body(
+    val dataType: String,
+    val items: Items,
+    val pageNo: Int,
+    val numOfRows: Int,
+    val totalCount: Int,
+)
+@Serializable
+data class Items(
+    val item: List<Item>
+)
+@Serializable
+data class Item(
+    val baseDate: String,
+    val baseTime: String,
+    val category: String,
+    val nx: Int,
+    val ny: Int,
+    val obsrValue: String
+)

app/src/main/java/com/example/gdsc/weather/WeatherService.kt

@@ -0,0 +1,19 @@
+package com.example.gdsc.weather
+
+import com.example.gdsc.weather.ApiKey.Companion.API_KEY
+import retrofit2.http.GET
+import retrofit2.http.Query
+import retrofit2.Call
+
+interface WeatherService {
+    @GET("getUltraSrtNcst?serviceKey=$API_KEY")
+    fun getWeather(
+        @Query("numOfRows") numOfRows: Int = 1,              // 한 페이지 경과 수
+        @Query("pageNo") pageNo: Int = 1,                    // 페이지 번호
+        @Query("dataType") dataType: String = "JSON",        // 응답 자료 형식
+        @Query("base_date") base_date: String = "20231103",  // 발표 일자
+        @Query("base_time") base_time: String = "0600",      // 발표 시각
+        @Query("nx") nx: Int = 55,                           // 예보지점 X 좌표
+        @Query("ny") ny: Int = 127,                          // 예보지점 Y 좌표
+    ): Call<WeatherDto>
+}

app/src/main/res/layout/activity_weather.xml

@@ -0,0 +1,19 @@
+<?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=".weather.WeatherActivity">
+
+    <TextView
+        android:id="@+id/tv_result"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginHorizontal="24dp"
+        android:layout_marginTop="200dp"
+        android:text="Result"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+</androidx.constraintlayout.widget.ConstraintLayout>