From 68a43de1bfaa714ded9574ee0676cba7084425f4 Mon Sep 17 00:00:00 2001
From: Rickettsia1234 <ej100504@naver.com>
Date: Fri, 10 Jul 2026 17:11:50 +0900
Subject: [PATCH 1/2] =?UTF-8?q?=EB=A0=88=EC=9D=B4=EC=95=84=EC=9B=83=20?=
 =?UTF-8?q?=EC=9E=84=EC=8B=9C?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .idea/.gitignore                          |  3 ++
 .idea/.name                               |  1 +
 .idea/AndroidProjectSystem.xml            |  6 +++
 .idea/compiler.xml                        |  6 +++
 .idea/deploymentTargetSelector.xml        | 10 +++++
 .idea/gradle.xml                          | 18 +++++++++
 .idea/migrations.xml                      | 10 +++++
 .idea/misc.xml                            |  7 ++++
 .idea/runConfigurations.xml               | 17 ++++++++
 .idea/vcs.xml                             |  6 +++
 app/build.gradle.kts                      |  1 +
 app/src/main/res/layout/activity_main.xml | 49 +++++++++++++++++++++++
 gradle/libs.versions.toml                 |  2 +
 13 files changed, 136 insertions(+)
 create mode 100644 .idea/.gitignore
 create mode 100644 .idea/.name
 create mode 100644 .idea/AndroidProjectSystem.xml
 create mode 100644 .idea/compiler.xml
 create mode 100644 .idea/deploymentTargetSelector.xml
 create mode 100644 .idea/gradle.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

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/.name b/.idea/.name
new file mode 100644
index 0000000..cec0517
--- /dev/null
+++ b/.idea/.name
@@ -0,0 +1 @@
+android_2026_1
\ No newline at end of file
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/compiler.xml b/.idea/compiler.xml
new file mode 100644
index 0000000..b86273d
--- /dev/null
+++ b/.idea/compiler.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="CompilerConfiguration">
+    <bytecodeTargetLevel target="21" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/.idea/deploymentTargetSelector.xml b/.idea/deploymentTargetSelector.xml
new file mode 100644
index 0000000..b268ef3
--- /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="app">
+        <option name="selectionMode" value="DROPDOWN" />
+      </SelectionState>
+    </selectionStates>
+  </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/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..3e145fb
--- /dev/null
+++ b/.idea/misc.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="jbr-21" project-jdk-type="JavaSDK" />
+  <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/build.gradle.kts b/app/build.gradle.kts
index cc8ee59..2b63543 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -37,6 +37,7 @@ dependencies {
     implementation(libs.material)
     implementation(libs.androidx.activity)
     implementation(libs.androidx.constraintlayout)
+    implementation(libs.androidx.recyclerview)
     testImplementation(libs.junit)
     androidTestImplementation(libs.androidx.junit)
     androidTestImplementation(libs.androidx.espresso.core)
diff --git a/app/src/main/res/layout/activity_main.xml b/app/src/main/res/layout/activity_main.xml
index 9affce0..debd1c8 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -7,4 +7,53 @@
     android:layout_height="match_parent"
     tools:context=".MainActivity">
 
+    <TextView
+        android:id="@+id/textView"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="TextView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent" />
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recyclerView"
+        android:layout_width="409dp"
+        android:layout_height="426dp"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/linearLayout" />
+
+    <LinearLayout
+        android:id="@+id/linearLayout"
+        android:layout_width="409dp"
+        android:layout_height="231dp"
+        android:layout_marginTop="1dp"
+        android:orientation="horizontal"
+        app:layout_constraintBottom_toTopOf="@+id/recyclerView"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/textView">
+
+        <Button
+            android:id="@+id/button"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginStart="16dp"
+            android:text="Button" />
+
+        <Button
+            android:id="@+id/button2"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Button" />
+
+        <Button
+            android:id="@+id/button3"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="Button" />
+
+    </LinearLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index dd29a05..ee1ed4f 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -9,6 +9,7 @@ junitVersion = "1.3.0"
 espressoCore = "3.7.0"
 appcompat = "1.7.1"
 material = "1.14.0"
+recyclerview = "1.4.0"
 
 [libraries]
 androidx-constraintlayout = { module = "androidx.constraintlayout:constraintlayout", version.ref = "constraintlayout" }
@@ -19,6 +20,7 @@ androidx-junit = { group = "androidx.test.ext", name = "junit", version.ref = "j
 androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-core", version.ref = "espressoCore" }
 androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
 material = { module = "com.google.android.material:material", version.ref = "material" }
+androidx-recyclerview = { group = "androidx.recyclerview", name = "recyclerview", version.ref = "recyclerview" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }

From c60c13c83e199212bc23bb6cf7ca538ec04d94db Mon Sep 17 00:00:00 2001
From: Rickettsia1234 <ej100504@naver.com>
Date: Sat, 11 Jul 2026 23:55:26 +0900
Subject: [PATCH 2/2] =?UTF-8?q?=EC=99=84=EC=84=B1?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .idea/deviceManager.xml                       |  13 +++
 .idea/gradle.xml                              |   1 +
 .idea/misc.xml                                |   4 +-
 app/build.gradle.kts                          |   3 +
 .../com/example/android_2026_1/LapAdapter.kt  |  26 +++++
 .../example/android_2026_1/MainActivity.kt    | 105 +++++++++++++++++-
 app/src/main/res/layout/activity_main.xml     |  50 +++++----
 app/src/main/res/values/strings.xml           |  11 +-
 8 files changed, 188 insertions(+), 25 deletions(-)
 create mode 100644 .idea/deviceManager.xml
 create mode 100644 app/src/main/java/com/example/android_2026_1/LapAdapter.kt

diff --git a/.idea/deviceManager.xml b/.idea/deviceManager.xml
new file mode 100644
index 0000000..91f9558
--- /dev/null
+++ b/.idea/deviceManager.xml
@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="DeviceTable">
+    <option name="columnSorters">
+      <list>
+        <ColumnSorterState>
+          <option name="column" value="Name" />
+          <option name="order" value="ASCENDING" />
+        </ColumnSorterState>
+      </list>
+    </option>
+  </component>
+</project>
\ No newline at end of file
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 3e145fb..c902d2f 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -1,6 +1,6 @@
-<?xml version="1.0" encoding="UTF-8"?>
 <project version="4">
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" project-jdk-name="jbr-21" project-jdk-type="JavaSDK" />
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_21" default="true" project-jdk-name="jbr-21" project-jdk-type="JavaSDK" />
   <component name="ProjectType">
     <option name="id" value="Android" />
   </component>
diff --git a/app/build.gradle.kts b/app/build.gradle.kts
index 2b63543..c7f45c2 100644
--- a/app/build.gradle.kts
+++ b/app/build.gradle.kts
@@ -3,6 +3,9 @@ plugins {
 }
 
 android {
+    viewBinding {
+        enable = true
+    }
     namespace = "com.example.android_2026_1"
     compileSdk = 36
 
diff --git a/app/src/main/java/com/example/android_2026_1/LapAdapter.kt b/app/src/main/java/com/example/android_2026_1/LapAdapter.kt
new file mode 100644
index 0000000..b2f6bd7
--- /dev/null
+++ b/app/src/main/java/com/example/android_2026_1/LapAdapter.kt
@@ -0,0 +1,26 @@
+package com.example.android_2026_1
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+
+class LapAdapter(private val lapList: List<String>) : RecyclerView.Adapter<LapAdapter.LapViewHolder>() {
+
+    class LapViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val textViewLap: TextView = itemView as TextView
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): LapViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(android.R.layout.simple_list_item_1, parent, false)
+        return LapViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: LapViewHolder, position: Int) {
+        holder.textViewLap.text = lapList[position]
+    }
+
+    override fun getItemCount(): Int = lapList.size
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/example/android_2026_1/MainActivity.kt b/app/src/main/java/com/example/android_2026_1/MainActivity.kt
index ad2a6ca..9166fd5 100644
--- a/app/src/main/java/com/example/android_2026_1/MainActivity.kt
+++ b/app/src/main/java/com/example/android_2026_1/MainActivity.kt
@@ -1,20 +1,121 @@
 package com.example.android_2026_1
 
+import android.annotation.SuppressLint
 import android.os.Bundle
+import android.os.SystemClock
 import androidx.activity.enableEdgeToEdge
 import androidx.appcompat.app.AppCompatActivity
 import androidx.core.view.ViewCompat
 import androidx.core.view.WindowInsetsCompat
+import androidx.lifecycle.lifecycleScope
+import androidx.recyclerview.widget.LinearLayoutManager
+import com.example.android_2026_1.databinding.ActivityMainBinding
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
 
 class MainActivity : AppCompatActivity() {
+
+    private lateinit var binding: ActivityMainBinding
+
+    private var timeCentiseconds = 0
+    private var timeJob: Job? = null
+
+    private var startTime = 0L
+    private var pausedTime = 0L
+
+    private lateinit var lapAdapter: LapAdapter
+    private val lapList = mutableListOf<String>()
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()
-        setContentView(R.layout.activity_main)
-        ViewCompat.setOnApplyWindowInsetsListener(findViewById(R.id.main)) { v, insets ->
+
+        binding = ActivityMainBinding.inflate(layoutInflater)
+        setContentView(binding.root)
+
+        ViewCompat.setOnApplyWindowInsetsListener(binding.main) { v, insets ->
             val systemBars = insets.getInsets(WindowInsetsCompat.Type.systemBars())
             v.setPadding(systemBars.left, systemBars.top, systemBars.right, systemBars.bottom)
             insets
         }
+
+        lapAdapter = LapAdapter(lapList)
+        binding.recyclerViewLaps.apply {
+            adapter = lapAdapter
+            layoutManager = LinearLayoutManager(this@MainActivity)
+        }
+
+        binding.buttonStartPause.setOnClickListener {
+            if (timeJob?.isActive == true) pauseTimer() else startTimer()
+        }
+
+        binding.buttonLap.setOnClickListener {
+            val currentText = getFormattedTime()
+            val secondsElapsed = timeCentiseconds / 100
+            val lapRecord = getString(R.string.lap_record_format, secondsElapsed, currentText)
+
+            lapList.add(0, lapRecord)
+            lapAdapter.notifyItemInserted(0)
+            binding.recyclerViewLaps.scrollToPosition(0)
+        }
+
+        binding.buttonStop.setOnClickListener {
+            resetTimer()
+            clearLapRecords()
+        }
+    }
+
+    private fun startTimer() {
+        startTime = SystemClock.elapsedRealtime() - pausedTime
+
+        timeJob = lifecycleScope.launch {
+            binding.buttonStartPause.text = getString(R.string.btn_pause)
+
+            while (isActive) {
+                val elapsedMillis = SystemClock.elapsedRealtime() - startTime
+                timeCentiseconds = (elapsedMillis / 10).toInt()
+
+                updateTimerText()
+                delay(10L)
+            }
+        }
+    }
+
+    private fun pauseTimer() {
+        timeJob?.cancel()
+        pausedTime = SystemClock.elapsedRealtime() - startTime
+        binding.buttonStartPause.text = getString(R.string.btn_start)
+    }
+
+    private fun resetTimer() {
+        timeJob?.cancel()
+        timeCentiseconds = 0
+        pausedTime = 0L
+        updateTimerText()
+        binding.buttonStartPause.text = getString(R.string.btn_start)
+    }
+
+    private fun getFormattedTime(): String {
+        val m = (timeCentiseconds / 6000).toString().padStart(2, '0')
+        val s = ((timeCentiseconds % 6000) / 100).toString().padStart(2, '0')
+        val ms = (timeCentiseconds % 100).toString().padStart(2, '0')
+
+        return "$m:$s:$ms"
+    }
+
+    private fun updateTimerText() {
+        val m = (timeCentiseconds / 6000).toString().padStart(2, '0')
+        val s = ((timeCentiseconds % 6000) / 100).toString().padStart(2, '0')
+        val ms = (timeCentiseconds % 100).toString().padStart(2, '0')
+
+        binding.textViewTime.text = "$m : $s : $ms"
+    }
+
+    @SuppressLint("NotifyDataSetChanged")
+    private fun clearLapRecords() {
+        lapList.clear()
+        lapAdapter.notifyDataSetChanged()
     }
 }
\ 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 debd1c8..6b65f1f 100644
--- a/app/src/main/res/layout/activity_main.xml
+++ b/app/src/main/res/layout/activity_main.xml
@@ -8,52 +8,62 @@
     tools:context=".MainActivity">
 
     <TextView
-        android:id="@+id/textView"
+        android:id="@+id/textViewTime"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="TextView"
+        android:text="@string/default_time"
+        android:textSize="32sp"
+        android:textStyle="bold"
+        app:layout_constraintBottom_toTopOf="@+id/linearLayoutButtons"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.25" />
 
     <androidx.recyclerview.widget.RecyclerView
-        android:id="@+id/recyclerView"
-        android:layout_width="409dp"
-        android:layout_height="426dp"
+        android:id="@+id/recyclerViewLaps"
+        android:layout_width="0dp"
+        android:layout_height="0dp"
         app:layout_constraintBottom_toBottomOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/linearLayout" />
+        app:layout_constraintTop_toBottomOf="@+id/linearLayoutButtons" />
 
     <LinearLayout
-        android:id="@+id/linearLayout"
-        android:layout_width="409dp"
-        android:layout_height="231dp"
-        android:layout_marginTop="1dp"
+        android:id="@+id/linearLayoutButtons"
+        style="?android:attr/buttonBarStyle"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
         android:orientation="horizontal"
-        app:layout_constraintBottom_toTopOf="@+id/recyclerView"
+        android:gravity="center"
+        android:padding="16dp"
+        app:layout_constraintBottom_toTopOf="@+id/recyclerViewLaps"
         app:layout_constraintEnd_toEndOf="parent"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@+id/textView">
+        app:layout_constraintTop_toBottomOf="@+id/textViewTime">
 
         <Button
-            android:id="@+id/button"
+            android:id="@+id/buttonStartPause"
+            style="?android:attr/buttonBarButtonStyle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:layout_marginStart="16dp"
-            android:text="Button" />
+            android:layout_marginEnd="8dp"
+            android:text="@string/btn_start" />
 
         <Button
-            android:id="@+id/button2"
+            android:id="@+id/buttonStop"
+            style="?android:attr/buttonBarButtonStyle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="Button" />
+            android:layout_marginEnd="8dp"
+            android:text="@string/btn_stop" />
 
         <Button
-            android:id="@+id/button3"
+            android:id="@+id/buttonLap"
+            style="?android:attr/buttonBarButtonStyle"
             android:layout_width="wrap_content"
             android:layout_height="wrap_content"
-            android:text="Button" />
+            android:text="@string/btn_lap" />
 
     </LinearLayout>
 </androidx.constraintlayout.widget.ConstraintLayout>
\ No newline at end of file
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index c4a5053..e055159 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -1,3 +1,12 @@
 <resources>
-    <string name="app_name">android_2026_1</string>
+    <string name="app_name">스톱워치</string>
+    <string name="btn_start">Start</string>
+    <string name="btn_pause">Pause</string>
+    <string name="btn_stop">Stop</string>
+    <string name="btn_lap">Lap</string>
+    <string name="default_time">00 : 00 : 00</string>
+
+    <string name="lap_record_format">%1$d초 경과 (%2$s)</string>
+    <string name="time_format">%02d : %02d : %02d</string>
+    <string name="time_format_simple">%02d:%02d:%02d</string>
 </resources>
\ No newline at end of file