[김영수_Android] 11주차 과제 제출

app/src/main/java/com/example/bcsd_android_2025_1/LapAdapter.kt

@@ -0,0 +1,41 @@
+package com.example.bcsd_android_2025_1
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+
+class LapAdapter : RecyclerView.Adapter<LapAdapter.ViewHolder>() {
+
+    private val lapTimes = mutableListOf<String>()
+
+    inner class ViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val lapMessage: TextView = itemView.findViewById(R.id.tv_item_message)
+        val lapRecord: TextView = itemView.findViewById(R.id.tv_item_record)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): ViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.item, parent, false)
+        return ViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: ViewHolder, position: Int) {
+        holder.lapMessage.text = holder.itemView.context.getString(R.string.tv_message)
+        holder.lapRecord.text = lapTimes[position]
+    }
+
+    override fun getItemCount(): Int = lapTimes.size
+
+    fun addLap(lap: String) {
+        lapTimes.add(0, lap)
+        notifyItemInserted(0)
+    }
+
+    fun clear() {
+        lapTimes.clear()
+        notifyDataSetChanged()
+    }
+
+}

app/src/main/java/com/example/bcsd_android_2025_1/MainActivity.kt

@@ -1,14 +1,97 @@
 package com.example.bcsd_android_2025_1
-
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
+import android.widget.Button
+import android.widget.TextView
 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 androidx.recyclerview.widget.RecyclerView
+import kotlinx.coroutines.Job
+import kotlinx.coroutines.delay
+import kotlinx.coroutines.isActive
+import kotlinx.coroutines.launch
 
 class MainActivity : AppCompatActivity() {
+
+    private lateinit var tvTimer : TextView
+    private lateinit var btnLap : Button
+    private lateinit var btnStart : Button
+    private lateinit var btnStop : Button
+
+    private lateinit var rvRecord : RecyclerView
+    private lateinit var lapAdapter: LapAdapter
+
+    private var isRunning = false
+    private var runningTime = 0L
+    private var job: Job? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        tvTimer = findViewById(R.id.tv_main_timer)
+        btnLap = findViewById(R.id.btn_main_lap)
+        btnStart = findViewById(R.id.btn_main_start)
+        btnStop  = findViewById(R.id.btn_main_stop)
+        rvRecord = findViewById(R.id.rv_main_record)
+        rvRecord.layoutManager = LinearLayoutManager(this)
+        lapAdapter = LapAdapter()
+        rvRecord.adapter = lapAdapter
+
+        btnStart.setOnClickListener {
+            if (isRunning) {
+                pauseTimer()
+            } else {
+                startTimer()
+            }
+        }
+
+        btnStop.setOnClickListener {
+            stopTimer()
+        }
+
+        btnLap.setOnClickListener {
+            if (isRunning) {
+                lapAdapter.addLap(formatTime(runningTime))
+            }
+        }
+    }
+
+    private fun startTimer() {
+        val startTime = System.currentTimeMillis() - runningTime
+        job = lifecycleScope.launch {
+            while (isActive) {
+                runningTime = System.currentTimeMillis() - startTime
+                tvTimer.text = formatTime(runningTime)
+                delay(10)
+            }
+        }
+        isRunning = true
+        btnStart.text = getString(R.string.btn_pause)
+    }
+
+    private fun pauseTimer() {
+        job?.cancel()
+        isRunning = false
+        btnStart.text = getString(R.string.btn_start)
+    }
+
+    private fun stopTimer() {
+        job?.cancel()
+        runningTime = 0L
+        isRunning = false
+        tvTimer.text = getString(R.string.tv_time)
+        btnStart.text = getString(R.string.btn_start)
+        lapAdapter.clear()
     }
-}
+
+    private fun formatTime(ms: Long): String {
+        val min = (ms/1000)/60
+        val sec = (ms/1000)%60
+        val millisec = (ms%1000) / 10
+        return String.format("%02d:%02d:%02d", min, sec, millisec)
+    }
+
+
+}
+

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

@@ -8,12 +8,52 @@
     tools:context=".MainActivity">
 
     <TextView
+        android:id="@+id/tv_main_timer"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:text="Hello Android!"
-        app:layout_constraintBottom_toBottomOf="parent"
+        android:text="@string/tv_time"
+        android:textSize="40sp"
+        android:textStyle="bold"
+        app:layout_constraintStart_toStartOf="parent"
         app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        android:layout_marginTop="100dp"/>
+
+    <Button
+        android:id="@+id/btn_main_lap"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/btn_lap"
+        app:layout_constraintTop_toBottomOf="@id/tv_main_timer"
+        android:layout_marginTop="40dp"
         app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent" />
+        app:layout_constraintEnd_toEndOf="parent"/>
+    <Button
+        android:id="@+id/btn_main_start"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/btn_start"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toStartOf="@id/btn_main_lap"
+        app:layout_constraintTop_toTopOf="@id/btn_main_lap"/>
+
+
+    <Button
+        android:id="@+id/btn_main_stop"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/btn_stop"
+        app:layout_constraintStart_toEndOf="@id/btn_main_lap"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="@id/btn_main_lap"/>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/rv_main_record"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        app:layout_constraintTop_toBottomOf="@id/btn_main_lap"
+        android:layout_marginTop="40dp"
+        app:layout_constraintEnd_toEndOf="parent"/>
+
 
 </androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content">
+
+    <TextView
+        android:id="@+id/tv_item_message"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/tv_message"
+        android:textSize="15sp"/>
+    <TextView
+        android:id="@+id/tv_item_record"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/tv_record"
+        android:textSize="15sp"
+        android:layout_marginStart="5dp"/>
+
+
+</LinearLayout>

app/src/main/res/values/strings.xml

@@ -1,3 +1,14 @@
 <resources>
+
+<!--main-->
     <string name="app_name">BCSD_Android_2025-1</string>
+    <string name="tv_time">00:00:00</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>
+<!--item-->
+    <string name="tv_message">경과된 초 :</string>
+    <string name="tv_record">00:00:00</string>
+
 </resources>