From e2f045d3e0641d2d748cf75a888272c869cd1f60 Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Mon, 5 May 2025 22:53:51 +0900
Subject: [PATCH 1/7] goodnight

---
 .idea/.gitignore                              |  3 +++
 .idea/AndroidProjectSystem.xml                |  6 ++++++
 .idea/deploymentTargetSelector.xml            | 10 ++++++++++
 .idea/encodings.xml                           |  6 ++++++
 .idea/gradle.xml                              | 18 +++++++++++++++++
 .idea/kotlinc.xml                             |  6 ++++++
 .idea/migrations.xml                          | 10 ++++++++++
 .idea/misc.xml                                | 10 ++++++++++
 .idea/runConfigurations.xml                   | 17 ++++++++++++++++
 .idea/vcs.xml                                 |  6 ++++++
 .../bcsd_android_2025_1/SecondActivity.kt     | 20 +++++++++++++++++++
 app/src/main/res/layout/activity_second.xml   | 10 ++++++++++
 12 files changed, 122 insertions(+)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/AndroidProjectSystem.xml
 create mode 100644 .idea/deploymentTargetSelector.xml
 create mode 100644 .idea/encodings.xml
 create mode 100644 .idea/gradle.xml
 create mode 100644 .idea/kotlinc.xml
 create mode 100644 .idea/migrations.xml
 create mode 100644 .idea/misc.xml
 create mode 100644 .idea/runConfigurations.xml
 create mode 100644 .idea/vcs.xml
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
 create mode 100644 app/src/main/res/layout/activity_second.xml

diff --git a/.idea/.gitignore b/.idea/.gitignore
new file mode 100644
index 0000000..26d3352
--- /dev/null
+++ b/.idea/.gitignore
@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml
diff --git a/.idea/AndroidProjectSystem.xml b/.idea/AndroidProjectSystem.xml
new file mode 100644
index 0000000..4a53bee
--- /dev/null
+++ b/.idea/AndroidProjectSystem.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidProjectSystem">
+    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
new file mode 100644
index 0000000..22b0bb4
--- /dev/null
+++ b/.idea/deploymentTargetSelector.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="deploymentTargetSelector">
+    <selectionStates>
+      <SelectionState runConfigName="BCSD_Android_2025-1.app">
+        <option name="selectionMode" value="DROPDOWN" />
+      </SelectionState>
+    </selectionStates>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/encodings.xml b/.idea/encodings.xml
new file mode 100644
index 0000000..97626ba
--- /dev/null
+++ b/.idea/encodings.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="Encoding">
+    <file url="PROJECT" charset="UTF-8" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/gradle.xml b/.idea/gradle.xml
new file mode 100644
index 0000000..97f0a8e
--- /dev/null
+++ b/.idea/gradle.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+        <option name="modules">
+          <set>
+            <option value="$PROJECT_DIR$" />
+            <option value="$PROJECT_DIR$/app" />
+          </set>
+        </option>
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/kotlinc.xml b/.idea/kotlinc.xml
new file mode 100644
index 0000000..c224ad5
--- /dev/null
+++ b/.idea/kotlinc.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="KotlinJpsPluginSettings">
+    <option name="version" value="2.0.21" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/migrations.xml b/.idea/migrations.xml
new file mode 100644
index 0000000..f8051a6
--- /dev/null
+++ b/.idea/migrations.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/misc.xml b/.idea/misc.xml
new file mode 100644
index 0000000..3040d03
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/runConfigurations.xml b/.idea/runConfigurations.xml
new file mode 100644
index 0000000..16660f1
--- /dev/null
+++ b/.idea/runConfigurations.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
+        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
+        <option value="com.intellij.execution.junit.PatternConfigurationProducer" />
+        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
+        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
+        <option value="com.intellij.execution.junit.testDiscovery.JUnitTestDiscoveryConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinJUnitRunConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinPatternConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/vcs.xml b/.idea/vcs.xml
new file mode 100644
index 0000000..35eb1dd
--- /dev/null
+++ b/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="" vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
new file mode 100644
index 0000000..49124d3
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
@@ -0,0 +1,20 @@
+package com.example.bcsd_android_2025_1
+
+import android.os.Bundle
+import androidx.activity.enableEdgeToEdge
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.view.ViewCompat
+import androidx.core.view.WindowInsetsCompat
+
+class SecondActivity : AppCompatActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContentView(R.layout.activity_second)
+        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
+        }
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_second.xml b/app/src/main/res/layout/activity_second.xml
new file mode 100644
index 0000000..9117643
--- /dev/null
+++ b/app/src/main/res/layout/activity_second.xml
@@ -0,0 +1,10 @@
+<?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:id="@+id/main"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    tools:context=".SecondActivity">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

From c996e0f8c7752f49785491825fda04d89da1eeb3 Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Mon, 5 May 2025 22:54:54 +0900
Subject: [PATCH 2/7] goodnight2

---
 .idea/misc.xml                                |  2 +-
 app/src/main/AndroidManifest.xml              |  4 ++
 .../bcsd_android_2025_1/MainActivity.kt       | 36 +++++++++++--
 .../bcsd_android_2025_1/SecondActivity.kt     | 20 +++----
 app/src/main/res/layout/activity_main.xml     | 52 +++++++++++++++++--
 app/src/main/res/layout/activity_second.xml   | 26 ++++++++++
 6 files changed, 124 insertions(+), 16 deletions(-)

diff --git a/.idea/misc.xml b/.idea/misc.xml
index 3040d03..74dd639 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
-  <component name="ProjectRootManager">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 4c80941..865b971 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -12,6 +12,10 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.BCSD_Android_20251"
         tools:targetApi="31">
+        <activity
+            android:name=".SecondActivity"
+            android:exported="false" />
+
         <activity
             android:name=".MainActivity"
             android:exported="true">
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
index 3ffa0eb..7d38642 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
@@ -1,14 +1,44 @@
 package com.example.bcsd_android_2025_1
 
+
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.ViewCompat
-import androidx.core.view.WindowInsetsCompat
+import android.widget.Button
+import android.widget.Toast
+import android.widget.TextView
+import android.content.Intent
+
 
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        var count = 0
+
+        val countButton = findViewById<Button>(R.id.CountButton)
+        val countText = findViewById<TextView>(R.id.Count)
+        val toastButton = findViewById<Button>(R.id.ToastButton)
+        val randomButton = findViewById<Button>(R.id.RandomButton)
+
+        toastButton.setOnClickListener {
+            Toast.makeText(this@MainActivity, "BCSD 화이팅", Toast.LENGTH_SHORT).show()
+        }
+        countButton.setOnClickListener {
+            count++
+            countText.text = count.toString()
+        }
+
+
+        randomButton.setOnClickListener {
+            val intent = Intent(this@MainActivity, SecondActivity::class.java)
+            val randomValue = (0 until count).random()
+            count = randomValue
+            countText.text = count.toString()
+            intent.putExtra("count_value", count)
+            startActivity(intent)
+        }
+
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
index 49124d3..34bb77a 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
@@ -1,20 +1,22 @@
 package com.example.bcsd_android_2025_1
 
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.ViewCompat
-import androidx.core.view.WindowInsetsCompat
+import android.widget.TextView
+
 
 class SecondActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
         setContentView(R.layout.activity_second)
-        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
-        }
+
+        val count = intent.getIntExtra("count_value",0)
+
+        val textView = findViewById<TextView>(R.id.Count)
+
+        textView.text = count.toString()
+
+
     }
+
 }
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 311f3cb..027b838 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -8,12 +8,58 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/MY_Application"
+        android:layout_width="match_parent"
+        android:layout_height="40dp"
+        android:background="#A020F0"
+        android:gravity="center_vertical"
+        android:paddingStart="16dp"
+        android:text="My Application"
+        android:textColor="#FFFFFF"
+
+        tools:ignore="MissingConstraints" />
+
+    <Button
+        android:id="@+id/CountButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="572dp"
+        android:text="Count"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
+
+    <Button
+        android:id="@+id/ToastButton"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="572dp"
+        android:text="Toast"
+        app:layout_constraintEnd_toStartOf="@+id/CountButton"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
+
+    <Button
+        android:id="@+id/RandomButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello Android!"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:layout_marginTop="572dp"
+        android:text="Random"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toEndOf="@+id/CountButton"
+        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
+
+    <TextView
+        android:id="@+id/Count"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="0"
+        android:textSize="40dp"
+        app:layout_constraintBottom_toTopOf="@+id/CountButton"
+        app:layout_constraintTop_toBottomOf="@+id/MY_Application"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintEnd_toEndOf="parent"
 
+        tools:ignore="MissingConstraints"
+        />
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_second.xml b/app/src/main/res/layout/activity_second.xml
index 9117643..ac6cb8f 100644
--- a/app/src/main/res/layout/activity_second.xml
+++ b/app/src/main/res/layout/activity_second.xml
@@ -7,4 +7,30 @@
     android:layout_height="match_parent"
     tools:context=".SecondActivity">
 
+    <TextView
+        android:id="@+id/MY_Application"
+        android:layout_width="match_parent"
+        android:layout_height="40dp"
+        android:background="#A020F0"
+        android:gravity="center_vertical"
+        android:paddingStart="16dp"
+        android:text="My Application"
+        android:textColor="#FFFFFF"
+
+        tools:ignore="MissingConstraints" />
+
+    <TextView
+        android:id="@+id/Count"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="0"
+        android:textSize="40dp"
+
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+
+        app:layout_constraintTop_toBottomOf="@+id/MY_Application"
+        tools:ignore="MissingConstraints" />
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

From a3be81612e0b455d801c710043a6f9738b0f94fb Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Tue, 6 May 2025 01:06:58 +0900
Subject: [PATCH 3/7] =?UTF-8?q?=EC=95=A1=ED=8B=B0=EB=B9=84=ED=8B=B0=20?=
 =?UTF-8?q?=EC=88=98=EC=A0=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../example/bcsd_android_2025_1/MainActivity.kt  | 16 ++++++++++++----
 .../bcsd_android_2025_1/SecondActivity.kt        | 15 +++++++++------
 2 files changed, 21 insertions(+), 10 deletions(-)

diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
index 7d38642..3af667a 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
@@ -4,6 +4,7 @@ package com.example.bcsd_android_2025_1
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import android.widget.Button
+import androidx.activity.result.contract.ActivityResultContracts
 import android.widget.Toast
 import android.widget.TextView
 import android.content.Intent
@@ -30,15 +31,22 @@ class MainActivity : AppCompatActivity() {
         }
 
 
+        val randomResultLauncher =
+            registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+                if (result.resultCode == RESULT_OK) {
+                    val randomValue = result.data?.getIntExtra("random_value", 0) ?: 0
+                    count = randomValue
+                    countText.text = count.toString()
+                }
+            }
+
         randomButton.setOnClickListener {
             val intent = Intent(this@MainActivity, SecondActivity::class.java)
-            val randomValue = (0 until count).random()
-            count = randomValue
-            countText.text = count.toString()
             intent.putExtra("count_value", count)
-            startActivity(intent)
+            randomResultLauncher.launch(intent)
         }
 
 
+
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
index 34bb77a..8afa49c 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
@@ -1,22 +1,25 @@
 package com.example.bcsd_android_2025_1
 
 import android.os.Bundle
-import androidx.appcompat.app.AppCompatActivity
 import android.widget.TextView
-
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
 
 class SecondActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_second)
 
-        val count = intent.getIntExtra("count_value",0)
+        val count = intent.getIntExtra("count_value", 0)
 
-        val textView = findViewById<TextView>(R.id.Count)
+        val randomValue = (0 until count).random()
 
-        textView.text = count.toString()
+        val textView = findViewById<TextView>(R.id.Count)
+        textView.text = "$randomValue"
 
+        val resultIntent = Intent()
+        resultIntent.putExtra("random_value", randomValue)
 
+        setResult(RESULT_OK, resultIntent)
     }
-
 }
\ No newline at end of file

From a8ca405b5a954b69938b97dee3c63692a2d6a4ce Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Tue, 6 May 2025 03:27:53 +0900
Subject: [PATCH 4/7] =?UTF-8?q?=ED=94=BC=EB=93=9C=EB=B0=B1=20=EB=B0=98?=
 =?UTF-8?q?=EC=98=81?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../java/com/example/bcsd_android_2025_1/MainActivity.kt | 9 ++++++---
 .../com/example/bcsd_android_2025_1/SecondActivity.kt    | 2 +-
 app/src/main/res/layout/activity_main.xml                | 4 ++--
 app/src/main/res/values/strings.xml                      | 1 +
 4 files changed, 10 insertions(+), 6 deletions(-)

diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
index 3af667a..b48ba16 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
@@ -4,13 +4,17 @@ package com.example.bcsd_android_2025_1
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
 import android.widget.Button
+import androidx.activity.result.ActivityResultLauncher
 import androidx.activity.result.contract.ActivityResultContracts
 import android.widget.Toast
 import android.widget.TextView
 import android.content.Intent
 
 
+
 class MainActivity : AppCompatActivity() {
+
+    private lateinit var randomResultLauncher: ActivityResultLauncher<Intent>
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
@@ -23,7 +27,7 @@ class MainActivity : AppCompatActivity() {
         val randomButton = findViewById<Button>(R.id.RandomButton)
 
         toastButton.setOnClickListener {
-            Toast.makeText(this@MainActivity, "BCSD 화이팅", Toast.LENGTH_SHORT).show()
+            Toast.makeText(this@MainActivity, getString(R.string.toast_message), Toast.LENGTH_SHORT).show()
         }
         countButton.setOnClickListener {
             count++
@@ -31,8 +35,7 @@ class MainActivity : AppCompatActivity() {
         }
 
 
-        val randomResultLauncher =
-            registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
+        randomResultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
                 if (result.resultCode == RESULT_OK) {
                     val randomValue = result.data?.getIntExtra("random_value", 0) ?: 0
                     count = randomValue
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
index 8afa49c..5cedeb9 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
@@ -12,7 +12,7 @@ class SecondActivity : AppCompatActivity() {
 
         val count = intent.getIntExtra("count_value", 0)
 
-        val randomValue = (0 until count).random()
+        val randomValue = (0 until count+1).random()
 
         val textView = findViewById<TextView>(R.id.Count)
         textView.text = "$randomValue"
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 027b838..c95ffa8 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -16,8 +16,8 @@
         android:paddingStart="16dp"
         android:text="My Application"
         android:textColor="#FFFFFF"
-
-        tools:ignore="MissingConstraints" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"/>
 
     <Button
         android:id="@+id/CountButton"
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c6c4daf..843e79f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,4 @@
 <resources>
     <string name="app_name">BCSD_Android_2025-1</string>
+    <string name="toast_message">BCSD 화이팅</string>
 </resources>
\ No newline at end of file

From 7df5134c84606a696610c32a7a279295a0a95213 Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Mon, 26 May 2025 19:32:27 +0900
Subject: [PATCH 5/7] SUPER

---
 .idea/gradle.xml                              |   1 +
 .idea/misc.xml                                |   1 -
 app/src/main/AndroidManifest.xml              |   2 +
 .../bcsd_android_2025_1/MainActivity.kt       | 132 +++++++++++++++---
 .../bcsd_android_2025_1/SecondActivity.kt     |  25 +++-
 app/src/main/res/drawable/fr.png              | Bin 0 -> 5090 bytes
 app/src/main/res/values/strings.xml           |  18 ++-
 7 files changed, 147 insertions(+), 32 deletions(-)
 create mode 100644 app/src/main/res/drawable/fr.png

diff --git a/.idea/gradle.xml b/.idea/gradle.xml
index 97f0a8e..639c779 100644
--- a/.idea/gradle.xml
+++ b/.idea/gradle.xml
@@ -1,5 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
+  <component name="GradleMigrationSettings" migrationVersion="1" />
   <component name="GradleSettings">
     <option name="linkedExternalProjectsSettings">
       <GradleProjectSettings>
diff --git a/.idea/misc.xml b/.idea/misc.xml
index 74dd639..b2c751a 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,4 +1,3 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
   <component name="ExternalStorageConfigurationManager" enabled="true" />
   <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK">
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 865b971..3761e8e 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -2,6 +2,8 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
index b48ba16..0d8b2bc 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
@@ -1,55 +1,141 @@
 package com.example.bcsd_android_2025_1
 
-
+import android.app.NotificationChannel
+import android.app.NotificationManager
+import android.app.PendingIntent
+import android.content.Context
+import android.content.Intent
+import android.graphics.BitmapFactory
+import android.os.Build
 import android.os.Bundle
-import androidx.appcompat.app.AppCompatActivity
 import android.widget.Button
-import androidx.activity.result.ActivityResultLauncher
-import androidx.activity.result.contract.ActivityResultContracts
-import android.widget.Toast
 import android.widget.TextView
-import android.content.Intent
+import android.widget.Toast
+import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.NotificationCompat
+import androidx.core.app.NotificationManagerCompat
 
 
+const val NOTIFICATION_CHANNEL_ID = "random_channel_id"
+const val NOTIFICATION_ID = 1001
+const val CLOSE_NOTIFICATION = "CLOSE_NOTIFICATION_ACTION"
 
 class MainActivity : AppCompatActivity() {
 
-    private lateinit var randomResultLauncher: ActivityResultLauncher<Intent>
+    private var count = 0
+    private lateinit var countText: TextView
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        var count = 0
-
+        countText = findViewById(R.id.Count)
         val countButton = findViewById<Button>(R.id.CountButton)
-        val countText = findViewById<TextView>(R.id.Count)
         val toastButton = findViewById<Button>(R.id.ToastButton)
         val randomButton = findViewById<Button>(R.id.RandomButton)
 
-        toastButton.setOnClickListener {
-            Toast.makeText(this@MainActivity, getString(R.string.toast_message), Toast.LENGTH_SHORT).show()
-        }
         countButton.setOnClickListener {
             count++
             countText.text = count.toString()
         }
 
+        toastButton.setOnClickListener {
+            Toast.makeText(this, getString(R.string.toast_message), Toast.LENGTH_SHORT).show()
+        }
 
-        randomResultLauncher = registerForActivityResult(ActivityResultContracts.StartActivityForResult()) { result ->
-                if (result.resultCode == RESULT_OK) {
-                    val randomValue = result.data?.getIntExtra("random_value", 0) ?: 0
-                    count = randomValue
-                    countText.text = count.toString()
-                }
+        randomButton.setOnClickListener {
+            createNotificationChannel()
+            showNotification()
+        }
+
+
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            requestPermissions(arrayOf(android.Manifest.permission.POST_NOTIFICATIONS), 1001)
+        }
+    }
+
+    override fun onNewIntent(intent: Intent) {
+        super.onNewIntent(intent)
+        setIntent(intent)
+
+        if (intent.action == CLOSE_NOTIFICATION) {
+            NotificationManagerCompat.from(this).cancel(NOTIFICATION_ID)
+            return
+        }
+
+        val random = intent.getIntExtra("random_value", -1)
+        if (random != -1) {
+            count = random
+            countText.text = count.toString()
+        }
+    }
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(
+                NOTIFICATION_CHANNEL_ID,
+                getString(R.string.channel_name),
+                NotificationManager.IMPORTANCE_DEFAULT
+            ).apply {
+                description = getString(R.string.channel_description)
             }
 
-        randomButton.setOnClickListener {
-            val intent = Intent(this@MainActivity, SecondActivity::class.java)
-            intent.putExtra("count_value", count)
-            randomResultLauncher.launch(intent)
+            val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            manager.createNotificationChannel(channel)
+        }
+    }
+
+    private fun getDeleteIntent(): PendingIntent {
+        val intent = Intent(this, MainActivity::class.java).apply {
+            action = CLOSE_NOTIFICATION
+            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
+        }
+        return PendingIntent.getActivity(
+            this,
+            1,
+            intent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
+    }
+
+    private fun showNotification() {
+        val contentIntent = Intent(this, SecondActivity::class.java).apply {
+            putExtra("count_value", count)
+            putExtra("notification_id", NOTIFICATION_ID)
+            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP
         }
 
+        val pendingContentIntent = PendingIntent.getActivity(
+            this,
+            0,
+            contentIntent,
+            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        )
 
+        val largeImageBitmap = BitmapFactory.decodeResource(resources, R.drawable.fr)
+        val builder = NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
+            .setSmallIcon(R.drawable.fr)
+            .setContentTitle(getString(R.string.random_check))
+            .setContentText(getString(R.string.button_check))
+            .setContentIntent(pendingContentIntent)
+            .addAction(
+                R.drawable.fr,
+                getString(R.string.more),
+                pendingContentIntent
+            ) .setAutoCancel(true)
+            .addAction(
+                R.drawable.fr,
+                getString(R.string.text_close),
+                getDeleteIntent()
+            )
+            .setAutoCancel(true)
+            .setStyle(NotificationCompat.BigPictureStyle()
+                .bigPicture(largeImageBitmap)
+                .bigLargeIcon(largeImageBitmap)
+            )
 
+        with(NotificationManagerCompat.from(this)) {
+            notify(NOTIFICATION_ID, builder.build())
+        }
     }
 }
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
index 5cedeb9..41e564a 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
@@ -1,25 +1,40 @@
 package com.example.bcsd_android_2025_1
 
+
 import android.os.Bundle
 import android.widget.TextView
 import android.content.Intent
 import androidx.appcompat.app.AppCompatActivity
+import androidx.core.app.NotificationManagerCompat
 
 class SecondActivity : AppCompatActivity() {
+
+    private var randomValue: Int = -1
+    private var notificationId: Int = -1
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_second)
 
         val count = intent.getIntExtra("count_value", 0)
+        notificationId = intent.getIntExtra("notification_id", -1)
 
-        val randomValue = (0 until count+1).random()
+
+        if (notificationId != -1) {
+            NotificationManagerCompat.from(this).cancel(notificationId)
+        }
+        randomValue = (0 until count + 1).random()
 
         val textView = findViewById<TextView>(R.id.Count)
         textView.text = "$randomValue"
+    }
 
-        val resultIntent = Intent()
-        resultIntent.putExtra("random_value", randomValue)
+    override fun onBackPressed() {
 
-        setResult(RESULT_OK, resultIntent)
+        val intent = Intent(this, MainActivity::class.java).apply {
+            putExtra("random_value", randomValue)
+            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP
+        }
+        startActivity(intent)
+        super.onBackPressed()
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/res/drawable/fr.png b/app/src/main/res/drawable/fr.png
new file mode 100644
index 0000000000000000000000000000000000000000..0570b675401a7b2444355b6ff18d9c2f9a3d8342
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z%#!!P(~Z%_pB;5SizR*--e<jekSgL(U711rgULyL&bzI#zEu@*L+lB+0Mq+H_%tni
z;N+~zNg(>RV{m+S!Px8^bIUirS26U{LUZPZz+7p}y1Ja_UkCa(l;!g|%^?GJr3|4@
zAkm<_2Pm6yGf&*ocT#BdZ;-cJs@?15<Z2HCn`9*dO7ZcD?Hc&w7J?;)I_x<s)D~95
zA4C<FD-M2-LY?&|Hd~m4XvcSrmB=NaF9-z><oACZ56>k<Ru|~Bz;d@od@Z27UU#pn
z-2Ru0{%et^c)ibML>bcu#E88t$(^#9FMrVO)h0odoj1m7hdxp`1jt6{x3*Gp&?#i|
zJX3xe3^SW>GcOQ5>Y>aXmu@J_Wu_Tm;z#VW{j#~MMbg}Qcb0y84lkyj=Mx;OwWQxk
zJCnKZ)LPTRq|SHUu~1HGl9qbXoNC)&uJ+<-$CQ&=VdL|>8(w|=1+!nk=;0{nrYtOb
zN?ub|h8nKCgG;2$M4Pv{DTb*#+CvA#>Xz*sjO^ML4*{bMGVe6#!Ds$`jG*W9HUJE$
zMQeo3)~J)&+$@nSk4RLc5H->eq<dAGoA(EjqpMNBiSF=zt)8_Ha`v;zvJytyA_?rK
zCLVh360ipz#c~5#JmtB0+)Yqbvj8b(ZpItYrNuajZ>I7T7i9@#ox+#N<t&9jcr7)3
z<k0{Y-TtyjJ^keExxL{E*chzxqu3U`rvO~W1wN~H%zz}Y6a8-Baqf&VTH~Y4n3qA=
z1SDbk*#Wre>F5f<(+ji=0x5LnxDlnbF&G*Qo4!;z-4%D~--ikSurtDpL>G6zwM+9!
z(C*D&jdSU5v@jLG(GW{iib~8L>~$c`mj8FVjPm2u=5Uqi;OJEB<cz^tuPchiNYChq
a^l-m$UHfK!kCN)^|C96nFWcxH4*e%g--}%U

literal 0
HcmV?d00001

diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 843e79f..fd7578f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,4 +1,16 @@
 <resources>
-    <string name="app_name">BCSD_Android_2025-1</string>
-    <string name="toast_message">BCSD 화이팅</string>
-</resources>
\ No newline at end of file
+    <string name="app_name">Wonder Why</string>
+    <string name="toast_message">To Heart</string>
+    <string name="channel_name">랜덤 알림 채널</string>
+    <string name="channel_description">랜덤 숫자 알림을 위한 채널입니다.</string>
+    <string name="random_check">날씨 좋은 날 지구에서</string>
+    <string name="button_check">fromm앱에서 알림이 도착했습니다.</string>
+    <string name="more">더보기</string>
+    <string name="text_close">닫기</string>
+
+    <string name="title_activity_random_result_receiver.kt">RandomResultReceiver.kt</string>
+    <string name="title_activity_random_result_receiver">RandomResultReceiver</string>
+    <string name="title_activity_constants">Constants</string>
+
+
+</resources>

From baa5d35be8747536adc7ff81d5abd74e4f4f03f0 Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Mon, 23 Jun 2025 22:30:00 +0900
Subject: [PATCH 6/7] Day-2

---
 .../bcsd_android_2025_1/MusicAdapter.kt       | 47 +++++++++++++++
 .../bcsd_android_2025_1/SecondActivity.kt     | 40 -------------
 .../bcsd_android_2025_1/model/MusicData.kt    |  2 +
 .../bcsd_android_2025_1/ui/theme/Color.kt     | 11 ++++
 .../bcsd_android_2025_1/ui/theme/Theme.kt     | 58 +++++++++++++++++++
 .../bcsd_android_2025_1/ui/theme/Type.kt      | 34 +++++++++++
 app/src/main/res/layout/activity_second.xml   | 36 ------------
 app/src/main/res/layout/music.xml             |  6 ++
 8 files changed, 158 insertions(+), 76 deletions(-)
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
 delete mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Color.kt
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Theme.kt
 create mode 100644 app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Type.kt
 delete mode 100644 app/src/main/res/layout/activity_second.xml
 create mode 100644 app/src/main/res/layout/music.xml

diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
new file mode 100644
index 0000000..77535ff
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
@@ -0,0 +1,47 @@
+package com.example.bcsd_android_2025_1
+
+import android.os.Bundle
+import androidx.activity.ComponentActivity
+import androidx.activity.compose.setContent
+import androidx.activity.enableEdgeToEdge
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.padding
+import androidx.compose.material3.Scaffold
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.tooling.preview.Preview
+import com.example.bcsd_android_2025_1.ui.theme.Android_251Theme
+
+class MusicAdapter : ComponentActivity() {
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        enableEdgeToEdge()
+        setContent {
+            Android_251Theme {
+                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
+                    Greeting(
+                        name = "Android",
+                        modifier = Modifier.padding(innerPadding)
+                    )
+                }
+            }
+        }
+    }
+}
+
+@Composable
+fun Greeting(name: String, modifier: Modifier = Modifier) {
+    Text(
+        text = "Hello $name!",
+        modifier = modifier
+    )
+}
+
+@Preview(showBackground = true)
+@Composable
+fun GreetingPreview() {
+    Android_251Theme {
+        Greeting("Android")
+    }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
deleted file mode 100644
index 41e564a..0000000
--- a/app/src/main/java/com/example/bcsd_android_2025_1/SecondActivity.kt
+++ /dev/null
@@ -1,40 +0,0 @@
-package com.example.bcsd_android_2025_1
-
-
-import android.os.Bundle
-import android.widget.TextView
-import android.content.Intent
-import androidx.appcompat.app.AppCompatActivity
-import androidx.core.app.NotificationManagerCompat
-
-class SecondActivity : AppCompatActivity() {
-
-    private var randomValue: Int = -1
-    private var notificationId: Int = -1
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        setContentView(R.layout.activity_second)
-
-        val count = intent.getIntExtra("count_value", 0)
-        notificationId = intent.getIntExtra("notification_id", -1)
-
-
-        if (notificationId != -1) {
-            NotificationManagerCompat.from(this).cancel(notificationId)
-        }
-        randomValue = (0 until count + 1).random()
-
-        val textView = findViewById<TextView>(R.id.Count)
-        textView.text = "$randomValue"
-    }
-
-    override fun onBackPressed() {
-
-        val intent = Intent(this, MainActivity::class.java).apply {
-            putExtra("random_value", randomValue)
-            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP
-        }
-        startActivity(intent)
-        super.onBackPressed()
-    }
-}
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt b/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
new file mode 100644
index 0000000..5a0d63b
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
@@ -0,0 +1,2 @@
+package com.example.bcsd_android_2025_1.model 
+
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Color.kt b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Color.kt
new file mode 100644
index 0000000..e897c79
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Color.kt
@@ -0,0 +1,11 @@
+package com.example.bcsd_android_2025_1.ui.theme
+
+import androidx.compose.ui.graphics.Color
+
+val Purple80 = Color(0xFFD0BCFF)
+val PurpleGrey80 = Color(0xFFCCC2DC)
+val Pink80 = Color(0xFFEFB8C8)
+
+val Purple40 = Color(0xFF6650a4)
+val PurpleGrey40 = Color(0xFF625b71)
+val Pink40 = Color(0xFF7D5260)
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Theme.kt b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Theme.kt
new file mode 100644
index 0000000..dda7431
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Theme.kt
@@ -0,0 +1,58 @@
+package com.example.bcsd_android_2025_1.ui.theme
+
+import android.app.Activity
+import android.os.Build
+import androidx.compose.foundation.isSystemInDarkTheme
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.darkColorScheme
+import androidx.compose.material3.dynamicDarkColorScheme
+import androidx.compose.material3.dynamicLightColorScheme
+import androidx.compose.material3.lightColorScheme
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.platform.LocalContext
+
+private val DarkColorScheme = darkColorScheme(
+    primary = Purple80,
+    secondary = PurpleGrey80,
+    tertiary = Pink80
+)
+
+private val LightColorScheme = lightColorScheme(
+    primary = Purple40,
+    secondary = PurpleGrey40,
+    tertiary = Pink40
+
+    /* Other default colors to override
+    background = Color(0xFFFFFBFE),
+    surface = Color(0xFFFFFBFE),
+    onPrimary = Color.White,
+    onSecondary = Color.White,
+    onTertiary = Color.White,
+    onBackground = Color(0xFF1C1B1F),
+    onSurface = Color(0xFF1C1B1F),
+    */
+)
+
+@Composable
+fun Android_251Theme(
+    darkTheme: Boolean = isSystemInDarkTheme(),
+    // Dynamic color is available on Android 12+
+    dynamicColor: Boolean = true,
+    content: @Composable () -> Unit
+) {
+    val colorScheme = when {
+        dynamicColor && Build.VERSION.SDK_INT >= Build.VERSION_CODES.S -> {
+            val context = LocalContext.current
+            if (darkTheme) dynamicDarkColorScheme(context) else dynamicLightColorScheme(context)
+        }
+
+        darkTheme -> DarkColorScheme
+        else -> LightColorScheme
+    }
+
+    MaterialTheme(
+        colorScheme = colorScheme,
+        typography = Typography,
+        content = content
+    )
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Type.kt b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Type.kt
new file mode 100644
index 0000000..e350104
--- /dev/null
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/ui/theme/Type.kt
@@ -0,0 +1,34 @@
+package com.example.bcsd_android_2025_1.ui.theme
+
+import androidx.compose.material3.Typography
+import androidx.compose.ui.text.TextStyle
+import androidx.compose.ui.text.font.FontFamily
+import androidx.compose.ui.text.font.FontWeight
+import androidx.compose.ui.unit.sp
+
+// Set of Material typography styles to start with
+val Typography = Typography(
+    bodyLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 16.sp,
+        lineHeight = 24.sp,
+        letterSpacing = 0.5.sp
+    )
+    /* Other default text styles to override
+    titleLarge = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Normal,
+        fontSize = 22.sp,
+        lineHeight = 28.sp,
+        letterSpacing = 0.sp
+    ),
+    labelSmall = TextStyle(
+        fontFamily = FontFamily.Default,
+        fontWeight = FontWeight.Medium,
+        fontSize = 11.sp,
+        lineHeight = 16.sp,
+        letterSpacing = 0.5.sp
+    )
+    */
+)
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_second.xml b/app/src/main/res/layout/activity_second.xml
deleted file mode 100644
index ac6cb8f..0000000
--- a/app/src/main/res/layout/activity_second.xml
+++ /dev/null
@@ -1,36 +0,0 @@
-<?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:id="@+id/main"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    tools:context=".SecondActivity">
-
-    <TextView
-        android:id="@+id/MY_Application"
-        android:layout_width="match_parent"
-        android:layout_height="40dp"
-        android:background="#A020F0"
-        android:gravity="center_vertical"
-        android:paddingStart="16dp"
-        android:text="My Application"
-        android:textColor="#FFFFFF"
-
-        tools:ignore="MissingConstraints" />
-
-    <TextView
-        android:id="@+id/Count"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:text="0"
-        android:textSize="40dp"
-
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-
-        app:layout_constraintTop_toBottomOf="@+id/MY_Application"
-        tools:ignore="MissingConstraints" />
-
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/music.xml b/app/src/main/res/layout/music.xml
new file mode 100644
index 0000000..cdc89f2
--- /dev/null
+++ b/app/src/main/res/layout/music.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent">
+
+</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file

From b10b633af3fb9c313c935a79b5b3a2c7e6d88102 Mon Sep 17 00:00:00 2001
From: StayTogetherAllDay <seysey1473@naver.com>
Date: Mon, 23 Jun 2025 22:38:45 +0900
Subject: [PATCH 7/7] =?UTF-8?q?=EB=8B=A4=EC=8B=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 app/build.gradle.kts                          |  19 +-
 app/src/main/AndroidManifest.xml              |   7 +-
 .../bcsd_android_2025_1/MainActivity.kt       | 212 ++++++++++--------
 .../bcsd_android_2025_1/MusicAdapter.kt       |  72 +++---
 .../bcsd_android_2025_1/model/MusicData.kt    |   7 +-
 app/src/main/res/layout/activity_main.xml     |  63 ++----
 app/src/main/res/layout/music.xml             |  38 +++-
 app/src/main/res/values/strings.xml           |   8 +
 build.gradle.kts                              |   1 +
 gradle/libs.versions.toml                     |  16 +-
 10 files changed, 248 insertions(+), 195 deletions(-)

diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 5791375..58c2428 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -1,16 +1,17 @@
 plugins {
     alias(libs.plugins.android.application)
     alias(libs.plugins.kotlin.android)
+    alias(libs.plugins.kotlin.compose)
 }
 
 android {
     namespace = "com.example.bcsd_android_2025_1"
-    compileSdk = 34
+    compileSdk = 35
 
     defaultConfig {
         applicationId = "com.example.bcsd_android_2025_1"
         minSdk = 26
-        targetSdk = 34
+        targetSdk = 35
         versionCode = 1
         versionName = "1.0"
 
@@ -33,6 +34,9 @@ android {
     kotlinOptions {
         jvmTarget = "11"
     }
+    buildFeatures {
+        compose = true
+    }
 }
 
 dependencies {
@@ -42,7 +46,18 @@ dependencies {
     implementation(libs.material)
     implementation(libs.androidx.activity)
     implementation(libs.androidx.constraintlayout)
+    implementation(libs.androidx.lifecycle.runtime.ktx)
+    implementation(libs.androidx.activity.compose)
+    implementation(platform(libs.androidx.compose.bom))
+    implementation(libs.androidx.ui)
+    implementation(libs.androidx.ui.graphics)
+    implementation(libs.androidx.ui.tooling.preview)
+    implementation(libs.androidx.material3)
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
+    androidTestImplementation(platform(libs.androidx.compose.bom))
+    androidTestImplementation(libs.androidx.ui.test.junit4)
+    debugImplementation(libs.androidx.ui.tooling)
+    debugImplementation(libs.androidx.ui.test.manifest)
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 3761e8e..de0c4d8 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -3,6 +3,8 @@
     xmlns:tools="http://schemas.android.com/tools">
 
     <uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
 
     <application
         android:allowBackup="true"
@@ -14,16 +16,13 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.BCSD_Android_20251"
         tools:targetApi="31">
-        <activity
-            android:name=".SecondActivity"
-            android:exported="false" />
+
 
         <activity
             android:name=".MainActivity"
             android:exported="true">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />
-
                 <category android:name="android.intent.category.LAUNCHER" />
             </intent-filter>
         </activity>
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
index 0d8b2bc..ee77688 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt
@@ -1,141 +1,155 @@
 package com.example.bcsd_android_2025_1
 
-import android.app.NotificationChannel
-import android.app.NotificationManager
-import android.app.PendingIntent
-import android.content.Context
 import android.content.Intent
-import android.graphics.BitmapFactory
+import android.content.pm.PackageManager
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
+import android.provider.MediaStore
+import android.view.View
 import android.widget.Button
 import android.widget.TextView
-import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
 import androidx.appcompat.app.AppCompatActivity
-import androidx.core.app.NotificationCompat
-import androidx.core.app.NotificationManagerCompat
+import androidx.appcompat.app.AlertDialog
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import com.example.bcsd_android_2025_1.model.MusicData
 
+class MainActivity : AppCompatActivity() {
 
-const val NOTIFICATION_CHANNEL_ID = "random_channel_id"
-const val NOTIFICATION_ID = 1001
-const val CLOSE_NOTIFICATION = "CLOSE_NOTIFICATION_ACTION"
+    private lateinit var recyclerView: RecyclerView
+    private lateinit var permissionMessage: TextView
+    private lateinit var openSettingsButton: Button
+    private lateinit var musicAdapter: MusicAdapter
 
-class MainActivity : AppCompatActivity() {
+    private val musicList = mutableListOf<MusicData>()
 
-    private var count = 0
-    private lateinit var countText: TextView
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { isGranted ->
+        if (isGranted) {
+            showMusicList()
+        } else {
+            showPermissionDialog()
+        }
+    }
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
-        countText = findViewById(R.id.Count)
-        val countButton = findViewById<Button>(R.id.CountButton)
-        val toastButton = findViewById<Button>(R.id.ToastButton)
-        val randomButton = findViewById<Button>(R.id.RandomButton)
+        recyclerView = findViewById(R.id.MusicRecyclerView)
+        permissionMessage = findViewById(R.id.text1)
+        openSettingsButton = findViewById(R.id.OpenButton)
 
-        countButton.setOnClickListener {
-            count++
-            countText.text = count.toString()
-        }
+        musicAdapter = MusicAdapter(musicList)
+        recyclerView.adapter = musicAdapter
+        recyclerView.layoutManager = LinearLayoutManager(this)
 
-        toastButton.setOnClickListener {
-            Toast.makeText(this, getString(R.string.toast_message), Toast.LENGTH_SHORT).show()
-        }
+        recyclerView.visibility = View.GONE
+        permissionMessage.visibility = View.GONE
+        openSettingsButton.visibility = View.GONE
 
-        randomButton.setOnClickListener {
-            createNotificationChannel()
-            showNotification()
+        if (hasPermission()) {
+            showMusicList()
+        } else {
+            requestPermission()
         }
 
-
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
-            requestPermissions(arrayOf(android.Manifest.permission.POST_NOTIFICATIONS), 1001)
+        openSettingsButton.setOnClickListener {
+            val intent = Intent(android.provider.Settings.ACTION_APPLICATION_DETAILS_SETTINGS)
+            val uri = Uri.fromParts("package", packageName, null)
+            intent.data = uri
+            startActivity(intent)
         }
     }
 
-    override fun onNewIntent(intent: Intent) {
-        super.onNewIntent(intent)
-        setIntent(intent)
+    private fun hasPermission(): Boolean {
+        val permission = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            android.Manifest.permission.READ_MEDIA_AUDIO
+        } else {
+            android.Manifest.permission.READ_EXTERNAL_STORAGE
+        }
+        return ContextCompat.checkSelfPermission(this, permission) == PackageManager.PERMISSION_GRANTED
+    }
 
-        if (intent.action == CLOSE_NOTIFICATION) {
-            NotificationManagerCompat.from(this).cancel(NOTIFICATION_ID)
-            return
+    private fun requestPermission() {
+        val permission = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            android.Manifest.permission.READ_MEDIA_AUDIO
+        } else {
+            android.Manifest.permission.READ_EXTERNAL_STORAGE
         }
 
-        val random = intent.getIntExtra("random_value", -1)
-        if (random != -1) {
-            count = random
-            countText.text = count.toString()
+        when {
+            ContextCompat.checkSelfPermission(this, permission) == PackageManager.PERMISSION_GRANTED -> {
+                showMusicList()
+            }
+            shouldShowRequestPermissionRationale(permission) -> {
+                showPermissionDialog()
+            }
+            else -> {
+                requestPermissionLauncher.launch(permission)
+            }
         }
     }
 
-    private fun createNotificationChannel() {
-        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
-            val channel = NotificationChannel(
-                NOTIFICATION_CHANNEL_ID,
-                getString(R.string.channel_name),
-                NotificationManager.IMPORTANCE_DEFAULT
-            ).apply {
-                description = getString(R.string.channel_description)
+    private fun showPermissionDialog() {
+        AlertDialog.Builder(this)
+            .setTitle(getString(R.string.permission_dialog_title))
+            .setMessage(getString(R.string.permission_dialog_message))
+            .setPositiveButton(getString(R.string.ok)) { dialog, _ ->
+                dialog.dismiss()
+                showPermissionUI()
             }
+            .setNegativeButton(getString(R.string.cancel)) { dialog, _ ->
+                dialog.dismiss()
+            }
+            .show()
+    }
 
-            val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
-            manager.createNotificationChannel(channel)
-        }
+    private fun showPermissionUI() {
+        recyclerView.visibility = View.GONE
+        permissionMessage.visibility = View.VISIBLE
+        openSettingsButton.visibility = View.VISIBLE
     }
 
-    private fun getDeleteIntent(): PendingIntent {
-        val intent = Intent(this, MainActivity::class.java).apply {
-            action = CLOSE_NOTIFICATION
-            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP
-        }
-        return PendingIntent.getActivity(
-            this,
-            1,
-            intent,
-            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
-        )
+    private fun showMusicList() {
+        recyclerView.visibility = View.VISIBLE
+        permissionMessage.visibility = View.GONE
+        openSettingsButton.visibility = View.GONE
+
+        loadMusicList()
     }
 
-    private fun showNotification() {
-        val contentIntent = Intent(this, SecondActivity::class.java).apply {
-            putExtra("count_value", count)
-            putExtra("notification_id", NOTIFICATION_ID)
-            flags = Intent.FLAG_ACTIVITY_SINGLE_TOP or Intent.FLAG_ACTIVITY_CLEAR_TOP
-        }
+    private fun loadMusicList() {
+        musicList.clear()
 
-        val pendingContentIntent = PendingIntent.getActivity(
-            this,
-            0,
-            contentIntent,
-            PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
+        val uri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI
+        val projection = arrayOf(
+            MediaStore.Audio.Media.TITLE,
+            MediaStore.Audio.Media.ARTIST,
+            MediaStore.Audio.Media.DURATION
         )
 
-        val largeImageBitmap = BitmapFactory.decodeResource(resources, R.drawable.fr)
-        val builder = NotificationCompat.Builder(this, NOTIFICATION_CHANNEL_ID)
-            .setSmallIcon(R.drawable.fr)
-            .setContentTitle(getString(R.string.random_check))
-            .setContentText(getString(R.string.button_check))
-            .setContentIntent(pendingContentIntent)
-            .addAction(
-                R.drawable.fr,
-                getString(R.string.more),
-                pendingContentIntent
-            ) .setAutoCancel(true)
-            .addAction(
-                R.drawable.fr,
-                getString(R.string.text_close),
-                getDeleteIntent()
-            )
-            .setAutoCancel(true)
-            .setStyle(NotificationCompat.BigPictureStyle()
-                .bigPicture(largeImageBitmap)
-                .bigLargeIcon(largeImageBitmap)
-            )
-
-        with(NotificationManagerCompat.from(this)) {
-            notify(NOTIFICATION_ID, builder.build())
+        val cursor = contentResolver.query(uri, projection, null, null, null)
+        cursor?.use {
+            while (it.moveToNext()) {
+                val title = it.getString(0)
+                val artist = it.getString(1)
+                val duration = it.getLong(2)
+                musicList.add(MusicData(title, artist, duration))
+            }
+        }
+
+        musicAdapter.notifyDataSetChanged()
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (hasPermission()) {
+            showMusicList()
         }
     }
-}
\ No newline at end of file
+}
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt b/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
index 77535ff..ddf70f6 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/MusicAdapter.kt
@@ -1,47 +1,39 @@
 package com.example.bcsd_android_2025_1
 
-import android.os.Bundle
-import androidx.activity.ComponentActivity
-import androidx.activity.compose.setContent
-import androidx.activity.enableEdgeToEdge
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.padding
-import androidx.compose.material3.Scaffold
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
-import com.example.bcsd_android_2025_1.ui.theme.Android_251Theme
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.example.bcsd_android_2025_1.model.MusicData
 
-class MusicAdapter : ComponentActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
-        enableEdgeToEdge()
-        setContent {
-            Android_251Theme {
-                Scaffold(modifier = Modifier.fillMaxSize()) { innerPadding ->
-                    Greeting(
-                        name = "Android",
-                        modifier = Modifier.padding(innerPadding)
-                    )
-                }
-            }
-        }
+class MusicAdapter(private val musicList: List<MusicData>) :
+    RecyclerView.Adapter<MusicAdapter.MusicViewHolder>() {
+
+    inner class MusicViewHolder(view: View) : RecyclerView.ViewHolder(view) {
+        val title: TextView = view.findViewById(R.id.titleText)
+        val artist: TextView = view.findViewById(R.id.artistText)
+        val duration: TextView = view.findViewById(R.id.durationText)
     }
-}
 
-@Composable
-fun Greeting(name: String, modifier: Modifier = Modifier) {
-    Text(
-        text = "Hello $name!",
-        modifier = modifier
-    )
-}
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MusicViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.music, parent, false)
+        return MusicViewHolder(view)
+    }
 
-@Preview(showBackground = true)
-@Composable
-fun GreetingPreview() {
-    Android_251Theme {
-        Greeting("Android")
+    override fun onBindViewHolder(holder: MusicViewHolder, position: Int) {
+        val music = musicList[position]
+        holder.title.text = music.title
+        holder.artist.text = music.artist
+        holder.duration.text = formatDuration(music.duration)
     }
-}
\ No newline at end of file
+
+    override fun getItemCount(): Int = musicList.size
+
+    private fun formatDuration(ms: Long): String {
+        val minutes = ms / 1000 / 60
+        val seconds = (ms / 1000) % 60
+        return "%d:%02d".format(minutes, seconds)
+    }
+}
diff --git a/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt b/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
index 5a0d63b..4e4d6d2 100644
--- a/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
+++ b/app/src/main/java/com/example/bcsd_android_2025_1/model/MusicData.kt
@@ -1,2 +1,7 @@
-package com.example.bcsd_android_2025_1.model 
+package com.example.bcsd_android_2025_1.model
 
+data class MusicData(
+    val title: String,
+    val artist: String,
+    val duration: Long
+)
\ No newline at end of file
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index c95ffa8..e980572 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -1,65 +1,40 @@
 <?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:id="@+id/main"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
-    tools:context=".MainActivity">
+  >
 
-    <TextView
-        android:id="@+id/MY_Application"
-        android:layout_width="match_parent"
-        android:layout_height="40dp"
-        android:background="#A020F0"
-        android:gravity="center_vertical"
-        android:paddingStart="16dp"
-        android:text="My Application"
-        android:textColor="#FFFFFF"
-        app:layout_constraintTop_toTopOf="parent"
-        app:layout_constraintStart_toStartOf="parent"/>
-
-    <Button
-        android:id="@+id/CountButton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="572dp"
-        android:text="Count"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
 
     <Button
-        android:id="@+id/ToastButton"
+        android:id="@+id/OpenButton"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginTop="572dp"
-        android:text="Toast"
-        app:layout_constraintEnd_toStartOf="@+id/CountButton"
+        android:text="Open Settings"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
-
-    <Button
-        android:id="@+id/RandomButton"
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="572dp"
-        android:text="Random"
         app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toEndOf="@+id/CountButton"
-        app:layout_constraintTop_toBottomOf="@+id/MY_Application" />
+        android:visibility="gone"
+        />
 
     <TextView
-        android:id="@+id/Count"
+        android:id="@+id/text1"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="0"
-        android:textSize="40dp"
-        app:layout_constraintBottom_toTopOf="@+id/CountButton"
-        app:layout_constraintTop_toBottomOf="@+id/MY_Application"
+        android:text="Allow permission to show files"
+        app:layout_constraintBottom_toTopOf="@+id/OpenButton"
         app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
-
-        tools:ignore="MissingConstraints"
+        android:visibility="gone"
         />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/MusicRecyclerView"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone"/>
+
+
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/layout/music.xml b/app/src/main/res/layout/music.xml
index cdc89f2..2b5dbb3 100644
--- a/app/src/main/res/layout/music.xml
+++ b/app/src/main/res/layout/music.xml
@@ -1,6 +1,36 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
-             android:layout_width="match_parent"
-             android:layout_height="match_parent">
+<androidx.constraintlayout.widget.ConstraintLayout
+    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:padding="8dp">
 
-</androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
+    <TextView
+        android:id="@+id/titleText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:textSize="20sp"
+        android:textStyle="bold"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+
+    <TextView
+        android:id="@+id/artistText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:textSize="16sp"
+        app:layout_constraintTop_toBottomOf="@id/titleText"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent" />
+
+    <TextView
+        android:id="@+id/durationText"
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:textSize="14sp"
+        app:layout_constraintTop_toBottomOf="@id/titleText"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="@id/artistText"  />
+</androidx.constraintlayout.widget.ConstraintLayout>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index fd7578f..89bb59f 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -8,9 +8,17 @@
     <string name="more">더보기</string>
     <string name="text_close">닫기</string>
 
+    <string name="permission_dialog_title">권한이 필요합니다</string>
+    <string name="permission_dialog_message">권한이 필요합니다. 설정으로 이동하시겠습니까?</string>
+    <string name="ok">OK</string>
+    <string name="cancel">Cancel</string>
+
     <string name="title_activity_random_result_receiver.kt">RandomResultReceiver.kt</string>
     <string name="title_activity_random_result_receiver">RandomResultReceiver</string>
     <string name="title_activity_constants">Constants</string>
+    <string name="title_activity_music_adapter.kt">MusicAdapter.kt</string>
+    <string name="title_activity_music_adapter">MusicAdapter</string>
+    <string name="title_activity_music_data.kt">MusicData.kt</string>
 
 
 </resources>
diff --git a/build.gradle.kts b/build.gradle.kts
index 922f551..952b930 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -2,4 +2,5 @@
 plugins {
     alias(libs.plugins.android.application) apply false
     alias(libs.plugins.kotlin.android) apply false
+    alias(libs.plugins.kotlin.compose) apply false
 }
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index 283fec9..6f6fcd5 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -1,5 +1,5 @@
 [versions]
-agp = "8.9.0"
+agp = "8.9.2"
 kotlin = "2.0.21"
 coreKtx = "1.13.1"
 junit = "4.13.2"
@@ -9,6 +9,9 @@ appcompat = "1.7.0"
 material = "1.12.0"
 activity = "1.9.3"
 constraintlayout = "2.2.1"
+lifecycleRuntimeKtx = "2.9.0"
+activityCompose = "1.10.1"
+composeBom = "2024.09.00"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -19,8 +22,19 @@ androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version
 material = { group = "com.google.android.material", name = "material", version.ref = "material" }
 androidx-activity = { group = "androidx.activity", name = "activity", version.ref = "activity" }
 androidx-constraintlayout = { group = "androidx.constraintlayout", name = "constraintlayout", version.ref = "constraintlayout" }
+androidx-lifecycle-runtime-ktx = { group = "androidx.lifecycle", name = "lifecycle-runtime-ktx", version.ref = "lifecycleRuntimeKtx" }
+androidx-activity-compose = { group = "androidx.activity", name = "activity-compose", version.ref = "activityCompose" }
+androidx-compose-bom = { group = "androidx.compose", name = "compose-bom", version.ref = "composeBom" }
+androidx-ui = { group = "androidx.compose.ui", name = "ui" }
+androidx-ui-graphics = { group = "androidx.compose.ui", name = "ui-graphics" }
+androidx-ui-tooling = { group = "androidx.compose.ui", name = "ui-tooling" }
+androidx-ui-tooling-preview = { group = "androidx.compose.ui", name = "ui-tooling-preview" }
+androidx-ui-test-manifest = { group = "androidx.compose.ui", name = "ui-test-manifest" }
+androidx-ui-test-junit4 = { group = "androidx.compose.ui", name = "ui-test-junit4" }
+androidx-material3 = { group = "androidx.compose.material3", name = "material3" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
+kotlin-compose = { id = "org.jetbrains.kotlin.plugin.compose", version.ref = "kotlin" }