SSUMC-9th · redCaramel · Dec 1, 2025
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
@@ -1,3 +1,5 @@
+import java.util.Properties
+
 //plugins {
 //    alias(libs.plugins.android.application)
 //    alias(libs.plugins.jetbrains.kotlin.android)
@@ -148,11 +150,16 @@ android {
         targetSdk = 34
         versionCode = 1
         versionName = "1.0"
-
         testInstrumentationRunner = "androidx.test.runner.AndroidJUnitRunner"
         vectorDrawables {
             useSupportLibrary = true
         }
+        val properties = Properties()
+        properties.load(project.rootProject.file("local.properties").inputStream())
+        buildConfigField("String", "KAKAO_NATIVE_API", "\"${properties.getProperty("KAKAO_NATIVE_API")}\"")
+        buildConfigField("String", "KAKAO_REST_API", "\"${properties.getProperty("KAKAO_REST_API")}\"")
+        buildConfigField("String", "KAKAO_ADMIN_API", "\"${properties.getProperty("KAKAO_ADMIN_API")}\"")
+        manifestPlaceholders.put("KAKAO_NATIVE_API", properties.getProperty("KAKAO_NATIVE_API"))
     }
 
     buildTypes {
@@ -174,6 +181,7 @@ android {
     buildFeatures {
         compose = true
         viewBinding = true
+        buildConfig = true
     }
     composeOptions {
         kotlinCompilerExtensionVersion = "1.5.1"
@@ -260,4 +268,9 @@ dependencies {
     implementation("androidx.room:room-ktx:2.6.1")
 
     implementation("me.relex:circleindicator:2.1.6")
+
+    implementation("com.kakao.sdk:v2-user:2.23.0")
+    implementation("com.kakao.sdk:v2-share:2.23.0")
+    implementation("com.kakao.sdk:v2-cert:2.23.0")
+    implementation("com.kakao.sdk:v2-auth:2.13.0")
 }
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
@@ -8,6 +8,7 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK" />
 
     <application
+        android:name="com.example.umc_9th.GlobalApplication"
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
@@ -50,6 +51,19 @@
         <activity
             android:name="com.example.umc_9th.SongActivity"
             android:exported="false" />
+        <activity
+            android:name="com.kakao.sdk.auth.AuthCodeHandlerActivity"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+
+                <!-- Redirect URI: "kakao${NATIVE_APP_KEY}://oauth" -->
+                <data android:host="oauth"
+                    android:scheme="kakao${KAKAO_NATIVE_API}" />
+            </intent-filter>
+        </activity>
     </application>
 
 </manifest>
diff --git a/app/src/main/java/com/example/umc_9th/GlobalApplication.kt b/app/src/main/java/com/example/umc_9th/GlobalApplication.kt
@@ -0,0 +1,13 @@
+package com.example.umc_9th
+
+import android.app.Application
+import com.kakao.sdk.common.KakaoSdk
+import umc.study.umc_9th.BuildConfig
+
+class GlobalApplication : Application() {
+    override fun onCreate() {
+        super.onCreate()
+
+        KakaoSdk.init(this, BuildConfig.KAKAO_NATIVE_API)
+    }
+}
diff --git a/app/src/main/java/com/example/umc_9th/LoginActivity.kt b/app/src/main/java/com/example/umc_9th/LoginActivity.kt
@@ -1,6 +1,7 @@
 package com.example.umc_9th
 
 import android.content.Intent
+import android.graphics.BitmapFactory
 import android.os.Bundle
 import android.text.InputType
 import android.util.Log
@@ -15,9 +16,14 @@ import com.google.firebase.database.DatabaseError
 import com.google.firebase.database.FirebaseDatabase
 import com.google.firebase.database.ValueEventListener
 import com.google.firebase.database.getValue
+import com.kakao.sdk.auth.model.OAuthToken
+import com.kakao.sdk.common.model.ClientError
+import com.kakao.sdk.common.model.ClientErrorCause
+import com.kakao.sdk.user.UserApiClient
 import umc.study.umc_9th.R
 import umc.study.umc_9th.databinding.ActivityLoginBinding
 import umc.study.umc_9th.databinding.ActivitySignUpBinding
+import java.net.URL
 import kotlin.getValue
 
 class LoginActivity : AppCompatActivity() {
@@ -33,6 +39,8 @@ class LoginActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         binding = ActivityLoginBinding.inflate(layoutInflater)
         setContentView(binding.root)
+        val keyHash = com.kakao.sdk.common.util.Utility.getKeyHash(this)
+        Log.d("KeyHash", keyHash)
         observeLogin()
         observeJWT()
         binding.loginButton.setOnClickListener {
@@ -54,6 +62,53 @@ class LoginActivity : AppCompatActivity() {
         binding.gotoSignup.setOnClickListener {
             startActivity(Intent(this, SignUpActivity::class.java))
         }
+        binding.kakaoLogin.setOnClickListener {
+            // 로그인 조합 예제
+
+// 카카오계정으로 로그인 공통 callback 구성
+// 카카오톡으로 로그인 할 수 없어 카카오계정으로 로그인할 경우 사용됨
+            val callback: (OAuthToken?, Throwable?) -> Unit = { token, error ->
+                if (error != null) {
+                    Log.e("TAG", "카카오계정으로 로그인 실패", error)
+                } else if (token != null) {
+                    Log.i("TAG", "카카오계정으로 로그인 성공 ${token.accessToken}")
+                }
+            }
+
+// 카카오톡이 설치되어 있으면 카카오톡으로 로그인, 아니면 카카오계정으로 로그인
+            if (UserApiClient.instance.isKakaoTalkLoginAvailable(this)) {
+                UserApiClient.instance.loginWithKakaoTalk(this) { token, error ->
+                    if (error != null) {
+                        Log.e("TAG", "카카오톡으로 로그인 실패", error)
+
+                        // 사용자가 카카오톡 설치 후 디바이스 권한 요청 화면에서 로그인을 취소한 경우,
+                        // 의도적인 로그인 취소로 보고 카카오계정으로 로그인 시도 없이 로그인 취소로 처리 (예: 뒤로 가기)
+                        if (error is ClientError && error.reason == ClientErrorCause.Cancelled) {
+                            return@loginWithKakaoTalk
+                        }
+
+                        // 카카오톡에 연결된 카카오계정이 없는 경우, 카카오계정으로 로그인 시도
+                        UserApiClient.instance.loginWithKakaoAccount(this, callback = callback)
+                    } else if (token != null) {
+                        Log.i("TAG", "카카오톡으로 로그인 성공 ${token.accessToken}")
+                        updateKakaoData()
+
+                    }
+                }
+            } else {
+                UserApiClient.instance.loginWithKakaoAccount(this, callback = callback)
+            }
+        }
+        binding.naverLogin.setOnClickListener {
+            UserApiClient.instance.logout { error ->
+                if (error != null) {
+                    Log.e("TAG", "로그아웃 실패. SDK에서 토큰 폐기됨", error)
+                }
+                else {
+                    Log.i("TAG", "로그아웃 성공. SDK에서 토큰 폐기됨")
+                }
+            }
+        }
     }
     private fun observeLogin() {
         authViewModel.loginResult.observe(this) { result ->
@@ -83,6 +138,29 @@ class LoginActivity : AppCompatActivity() {
             }
         }
     }
+    private fun updateKakaoData() {
+        // 사용자 정보 요청 (기본)
+        UserApiClient.instance.me { user, error ->
+            if (error != null) {
+                Log.e("TAG", "사용자 정보 요청 실패", error)
+            }
+            else if (user != null) {
+                Log.i("TAG", "사용자 정보 요청 성공" +
+                        "\n회원번호: ${user.id}" +
+                        "\n닉네임: ${user.kakaoAccount?.profile?.nickname}" +
+                        "\n프로필사진: ${user.kakaoAccount?.profile?.thumbnailImageUrl}")
+                Thread {
+                    val url = URL(user.kakaoAccount?.profile?.thumbnailImageUrl)
+                    val bitmap = BitmapFactory.decodeStream(url.openStream())
+
+                    runOnUiThread {
+                        binding.kakaoImg.setImageBitmap(bitmap)
+                    }
+                }.start()
+                binding.nickname.text = user.kakaoAccount?.profile?.nickname + " " + user.id
+            }
+        }
+    }
 
 
     fun Login(id : String, pw : String) {

diff --git a/app/src/main/res/layout/activity_login.xml b/app/src/main/res/layout/activity_login.xml
@@ -136,12 +136,12 @@
         android:layout_height="50dp"
         android:layout_marginStart="16dp"
         android:layout_marginTop="16dp"
-        app:layout_constraintStart_toEndOf="@+id/imageView16"
+        app:layout_constraintStart_toEndOf="@+id/kakaoLogin"
         app:layout_constraintTop_toBottomOf="@+id/button3"
         app:srcCompat="@drawable/apple_44" />
 
     <ImageView
-        android:id="@+id/imageView16"
+        android:id="@+id/kakaoLogin"
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:layout_marginTop="16dp"
@@ -151,13 +151,32 @@
         app:srcCompat="@drawable/kakako_44" />
 
     <ImageView
-        android:id="@+id/imageView17"
+        android:id="@+id/naverLogin"
         android:layout_width="50dp"
         android:layout_height="50dp"
         android:layout_marginTop="16dp"
         android:layout_marginEnd="16dp"
-        app:layout_constraintEnd_toStartOf="@+id/imageView16"
+        app:layout_constraintEnd_toStartOf="@+id/kakaoLogin"
         app:layout_constraintTop_toBottomOf="@+id/button3"
         app:srcCompat="@drawable/naver_44" />
 
+    <ImageView
+        android:id="@+id/kakaoImg"
+        android:layout_width="75dp"
+        android:layout_height="71dp"
+        android:layout_marginTop="32dp"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/kakaoLogin"
+        app:srcCompat="@drawable/ic_bottom_locker_select_resized" />
+
+    <TextView
+        android:id="@+id/nickname"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="카카오닉네임"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/kakaoImg" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/settings.gradle.kts b/settings.gradle.kts
@@ -16,6 +16,7 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
+        maven { url = java.net.URI("https://devrepo.kakao.com/nexus/content/groups/public/") }
     }
 }