[김석현_ Android] 9주차 과제 제출

app/src/main/AndroidManifest.xml

@@ -2,6 +2,12 @@
 <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" />
+
+    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
+    <uses-permission android:name="android.permission.READ_MEDIA_AUDIO" />
+    <uses-permission android:name="android.permission.INTERNET" />
+
     <application
         android:allowBackup="true"
         android:dataExtractionRules="@xml/data_extraction_rules"

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

@@ -1,14 +1,185 @@
 package com.example.bcsd_android_2025_1
 
+import android.Manifest
+import android.content.Intent
+import android.content.pm.PackageManager
+import android.database.Cursor
+import android.media.MediaScannerConnection
+import android.net.Uri
+import android.os.Build
 import android.os.Bundle
-import androidx.activity.enableEdgeToEdge
+import android.provider.MediaStore
+import android.provider.Settings
+import android.widget.Toast
+import androidx.activity.result.contract.ActivityResultContracts
+import androidx.appcompat.app.AlertDialog
 import androidx.appcompat.app.AppCompatActivity
-import androidx.core.view.ViewCompat
-import androidx.core.view.WindowInsetsCompat
+import androidx.core.content.ContextCompat
+import androidx.recyclerview.widget.LinearLayoutManager
+import androidx.recyclerview.widget.RecyclerView
+import java.io.File
+
+data class MusicItem(
+    val id: Long,
+    val title: String,
+    val artist: String,
+    val duration: String,
+    val albumId: Long,
+    val data: String
+)
 
 class MainActivity : AppCompatActivity() {
+
+    private lateinit var recyclerView: RecyclerView
+    private lateinit var musicAdapter: MusicAdapter
+    private val musicList = mutableListOf<MusicItem>()
+
+
+    private val musicPermission: String
+        get() = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) {
+            Manifest.permission.READ_MEDIA_AUDIO
+        } else {
+            Manifest.permission.READ_EXTERNAL_STORAGE
+        }
+
+    private val requestPermissionLauncher = registerForActivityResult(
+        ActivityResultContracts.RequestPermission()
+    ) { isGranted ->
+        if (isGranted) {
+            loadMusicFiles()
+            Toast.makeText(this, "allow", Toast.LENGTH_SHORT).show()
+        } else {
+            showPermissionDeniedDialog()
+        }
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
+
+        initViews()
+        checkAndRequestPermission()
+    }
+
+    private fun initViews() {
+        recyclerView = findViewById(R.id.recycler_view_music)
+        musicAdapter = MusicAdapter(musicList)
+        recyclerView.apply {
+            layoutManager = LinearLayoutManager(this@MainActivity)
+            adapter = musicAdapter
+        }
+    }
+
+    private fun checkAndRequestPermission() {
+        if (ContextCompat.checkSelfPermission(this, musicPermission) == PackageManager.PERMISSION_GRANTED) {
+            loadMusicFiles()
+        } else {
+            showPermissionRequestDialog()
+        }
+    }
+
+    private fun showPermissionRequestDialog() {
+        AlertDialog.Builder(this)
+            .setTitle("음악 및 오디오 접근 권한")
+            .setMessage("음악 파일을 불러오기 위해 권한이 필요합니다.")
+            .setPositiveButton("Allow") { _, _ ->
+                requestPermissionLauncher.launch(musicPermission)
+            }
+            .setNegativeButton("Don't allow") { _, _ ->
+                showPermissionDeniedDialog()
+            }
+            .setCancelable(false)
+            .show()
+    }
+
+    private fun showPermissionDeniedDialog() {
+        AlertDialog.Builder(this)
+            .setTitle("권한 필요!")
+            .setMessage("음악 파일을 표시하려면 권한이 필요합니다.\n\nAllow permission to show files")
+            .setPositiveButton("Open Settings") { _, _ ->
+                openAppSettings()
+            }
+            .setNegativeButton("Cancel") { _, _ ->
+                finish()
+            }
+            .setCancelable(false)
+            .show()
+    }
+
+    private fun openAppSettings() {
+        val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
+            data = Uri.fromParts("package", packageName, null)
+        }
+        startActivity(intent)
+    }
+
+    private fun loadMusicFiles() {
+
+        val file = File("/sdcard/Music/Lil_Tecca_Dark_Thoughts.mp3")
+        if (file.exists()) {
+            MediaScannerConnection.scanFile(this, arrayOf(file.absolutePath), null, null)
+        }
+
+        if (file.exists()) {
+            val uri = Uri.fromFile(file)
+            sendBroadcast(Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE, uri))
+        }
+
+        musicList.clear()
+
+        val projection = arrayOf(
+            MediaStore.Audio.Media._ID,
+            MediaStore.Audio.Media.TITLE,
+            MediaStore.Audio.Media.ARTIST,
+            MediaStore.Audio.Media.DURATION,
+            MediaStore.Audio.Media.ALBUM_ID,
+            MediaStore.Audio.Media.DATA
+        )
+
+        val selection = "${MediaStore.Audio.Media.IS_MUSIC} = 1"
+        val sortOrder = "${MediaStore.Audio.Media.TITLE} ASC"
+
+        val cursor: Cursor? = contentResolver.query(
+            MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
+            projection,
+            selection,
+            null,
+            sortOrder
+        )
+
+        cursor?.use {
+            val idColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media._ID)
+            val titleColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE)
+            val artistColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST)
+            val durationColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION)
+            val albumIdColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID)
+            val dataColumn = it.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA)
+
+            while (it.moveToNext()) {
+                val id = it.getLong(idColumn)
+                val title = it.getString(titleColumn) ?: "Unknown Title"
+                val artist = it.getString(artistColumn) ?: "Unknown Artist"
+                val duration = formatDuration(it.getLong(durationColumn))
+                val albumId = it.getLong(albumIdColumn)
+                val data = it.getString(dataColumn) ?: ""
+
+                musicList.add(MusicItem(id, title, artist, duration, albumId, data))
+            }
+        }
+
+        musicAdapter.notifyDataSetChanged()
+    }
+
+    private fun formatDuration(durationMs: Long): String {
+        val minutes = (durationMs / 1000) / 60
+        val seconds = (durationMs / 1000) % 60
+        return String.format("%02d:%02d", minutes, seconds)
+    }
+
+    override fun onResume() {
+        super.onResume()
+        if (ContextCompat.checkSelfPermission(this, musicPermission) == PackageManager.PERMISSION_GRANTED && musicList.isEmpty()) {
+            loadMusicFiles()
+        }
     }
-}
+}

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

@@ -0,0 +1,55 @@
+package com.example.bcsd_android_2025_1
+
+import android.content.ContentUris
+import android.net.Uri
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.bumptech.glide.Glide
+import com.bumptech.glide.request.RequestOptions
+
+class MusicAdapter(
+    private val musicList: List<MusicItem>
+) : RecyclerView.Adapter<MusicAdapter.MusicViewHolder>() {
+
+    inner class MusicViewHolder(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        val albumArt: ImageView = itemView.findViewById(R.id.iv_album_art)
+        val title: TextView = itemView.findViewById(R.id.tv_title)
+        val artist: TextView = itemView.findViewById(R.id.tv_artist)
+        val duration: TextView = itemView.findViewById(R.id.tv_duration)
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): MusicViewHolder {
+        val view = LayoutInflater.from(parent.context)
+            .inflate(R.layout.activity_music, parent, false)
+        return MusicViewHolder(view)
+    }
+
+    override fun onBindViewHolder(holder: MusicViewHolder, position: Int) {
+        val musicItem = musicList[position]
+
+        holder.title.text = musicItem.title
+        holder.artist.text = musicItem.artist
+        holder.duration.text = musicItem.duration
+
+        val albumArtUri = ContentUris.withAppendedId(
+            Uri.parse("content://media/external/audio/albumart"),
+            musicItem.albumId
+        )
+
+        Glide.with(holder.itemView.context)
+            .load(albumArtUri)
+            .apply(
+                RequestOptions()
+                    .placeholder(R.drawable.ic_music_note)
+                    .error(R.drawable.ic_music_note)
+                    .centerCrop()
+            )
+            .into(holder.albumArt)
+    }
+
+    override fun getItemCount(): Int = musicList.size
+}

app/src/main/res/drawable/album_art_background.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/surface_color" />
+    <corners android:radius="8dp" />
+    <stroke android:width="1dp" android:color="#E0E0E0" />
+</shape>

app/src/main/res/drawable/ic_music_note.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="@color/surface_color" />
+    <corners android:radius="8dp" />
+    <stroke android:width="1dp" android:color="#E0E0E0" />
+</shape>

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

@@ -0,0 +1,59 @@
+<?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"
+    android:orientation="horizontal"
+    android:padding="12dp"
+    android:background="?android:attr/selectableItemBackground"
+    android:gravity="center_vertical">
+
+    <ImageView
+        android:id="@+id/iv_album_art"
+        android:layout_width="56dp"
+        android:layout_height="56dp"
+        android:src="@drawable/ic_music_note"
+        android:scaleType="centerCrop"
+        android:background="@drawable/album_art_background" />
+
+    <LinearLayout
+        android:layout_width="0dp"
+        android:layout_height="wrap_content"
+        android:layout_weight="1"
+        android:orientation="vertical"
+        android:layout_marginStart="16dp"
+        android:layout_marginEnd="8dp">
+
+        <TextView
+            android:id="@+id/tv_title"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="title"
+            android:textSize="16sp"
+            android:textStyle="bold"
+            android:textColor="@color/primary_text"
+            android:maxLines="1"
+            android:ellipsize="end" />
+
+        <TextView
+            android:id="@+id/tv_artist"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="artist"
+            android:textSize="14sp"
+            android:textColor="@color/secondary_text"
+            android:layout_marginTop="2dp"
+            android:maxLines="1"
+            android:ellipsize="end" />
+
+    </LinearLayout>
+
+    <TextView
+        android:id="@+id/tv_duration"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="00:00"
+        android:textSize="12sp"
+        android:textColor="@color/secondary_text"
+        android:layout_marginStart="8dp" />
+
+</LinearLayout>

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

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    android:background="@color/background_color"
+    tools:context=".MainActivity">
+
+    <androidx.appcompat.widget.Toolbar
+        android:layout_width="match_parent"
+        android:layout_height="?attr/actionBarSize"
+        android:background="@color/primary_color"
+        android:elevation="4dp">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="음악"
+            android:textColor="@android:color/white"
+            android:textSize="20sp"
+            android:textStyle="bold" />
+
+    </androidx.appcompat.widget.Toolbar>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/recycler_view_music"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:padding="8dp"
+        tools:listitem="@layout/activity_music" />
+
+</LinearLayout>

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

@@ -2,4 +2,15 @@
 <resources>
     <color name="black">#FF000000</color>
     <color name="white">#FFFFFFFF</color>
+    <color name="green">#4CAF50</color>
+    <color name="t_200">#03DAC5</color>
+    <color name="t_700">#018786</color>
+    <color name="p_500">#6200EE</color>
+    <color name="p_700">#3700B3</color>
+    <color name="citrus">#FF9800</color>
+    <color name="secondary_text">#757575</color>
+    <color name="primary_text">#212121</color>
+    <color name="surface_color">#F5F5F5</color>
+    <color name="background_color">#FFFFFF</color>
+    <color name="primary_color">#6200EE</color>
 </resources>