[김석현_ Android] 10주차 과제 제출 #73
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,14 +1,267 @@ | ||
| package com.example.bcsd_android_2025_1 | ||
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| import android.Manifest | ||
| import android.R | ||
| import android.annotation.SuppressLint | ||
| import android.app.NotificationChannel | ||
| import android.app.NotificationManager | ||
| import android.content.Intent | ||
| import android.content.pm.PackageManager | ||
| import android.database.Cursor | ||
| import android.media.MediaPlayer | ||
| import android.media.MediaScannerConnection | ||
| import android.net.Uri | ||
| import android.os.Build | ||
| import android.os.Bundle | ||
| import android.provider.MediaStore | ||
| import android.provider.Settings | ||
| import android.widget.Toast | ||
| import androidx.activity.result.contract.ActivityResultContracts | ||
| import androidx.annotation.RequiresPermission | ||
| import androidx.appcompat.app.AlertDialog | ||
| import androidx.appcompat.app.AppCompatActivity | ||
| import androidx.core.app.NotificationCompat | ||
| import androidx.core.app.NotificationManagerCompat | ||
| import androidx.core.content.ContextCompat | ||
| import androidx.recyclerview.widget.LinearLayoutManager | ||
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| import com.example.bcsd_android_2025_1.databinding.ActivityMainBinding | ||
| import java.io.File | ||
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| data class MusicItem( | ||
| val id: Long, | ||
| val title: String, | ||
| val artist: String, | ||
| val duration: String, | ||
| val albumId: Long, | ||
| val data: String | ||
| ) | ||
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| class MainActivity : AppCompatActivity() { | ||
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| private var mediaPlayer: MediaPlayer? = null | ||
| private var currentlyPlaying: MusicItem? = null | ||
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| private lateinit var binding: ActivityMainBinding | ||
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| private lateinit var musicAdapter: MusicAdapter | ||
| private val musicList = mutableListOf<MusicItem>() | ||
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| 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 | ||
| } | ||
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| private val requestPermissionLauncher = registerForActivityResult( | ||
| ActivityResultContracts.RequestPermission() | ||
| ) { isGranted -> | ||
| if (isGranted) { | ||
| loadMusicFiles() | ||
| Toast.makeText(this, "Permission granted", Toast.LENGTH_SHORT).show() | ||
| } else { | ||
| showPermissionDeniedDialog() | ||
| } | ||
| } | ||
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| override fun onCreate(savedInstanceState: Bundle?) { | ||
| super.onCreate(savedInstanceState) | ||
| binding = ActivityMainBinding.inflate(layoutInflater) | ||
| setContentView(binding.root) | ||
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| createNotificationChannel() | ||
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| initRecyclerView() | ||
| checkAndRequestPermission() | ||
| } | ||
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| override fun onResume() { | ||
| super.onResume() | ||
| if (ContextCompat.checkSelfPermission(this, musicPermission) == PackageManager.PERMISSION_GRANTED && musicList.isEmpty()) { | ||
| loadMusicFiles() | ||
| } | ||
| } | ||
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| override fun onDestroy() { | ||
| super.onDestroy() | ||
| mediaPlayer?.release() | ||
| mediaPlayer = null | ||
| } | ||
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| @SuppressLint("MissingPermission") | ||
| private fun initRecyclerView() { | ||
| musicAdapter = MusicAdapter(musicList) { clickedItem -> | ||
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| if (currentlyPlaying?.id == clickedItem.id && mediaPlayer?.isPlaying == true) { | ||
| pauseMusic() | ||
| } else { | ||
| playMusic(clickedItem) | ||
| } | ||
| } | ||
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| binding.recyclerViewMusic.apply { | ||
| layoutManager = LinearLayoutManager(this@MainActivity) | ||
| adapter = musicAdapter | ||
| setHasFixedSize(true) | ||
| } | ||
| } | ||
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| @RequiresPermission(Manifest.permission.POST_NOTIFICATIONS) | ||
| private fun playMusic(item: MusicItem) { | ||
| mediaPlayer?.release() | ||
| mediaPlayer = MediaPlayer().apply { | ||
| setDataSource(item.data) | ||
| prepare() | ||
| start() | ||
| setOnCompletionListener { | ||
| Toast.makeText( | ||
| this@MainActivity, | ||
| "\"${item.title}\" music end.", | ||
| Toast.LENGTH_SHORT | ||
| ).show() | ||
| currentlyPlaying = null | ||
| } | ||
| } | ||
| currentlyPlaying = item | ||
| Toast.makeText(this, "\"${item.title}\" playing now", Toast.LENGTH_SHORT).show() | ||
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| showNowPlayingNotification(item) | ||
| } | ||
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| private fun pauseMusic() { | ||
| mediaPlayer?.pause() | ||
| Toast.makeText(this, "일시정지", Toast.LENGTH_SHORT).show() | ||
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| } | ||
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| private fun checkAndRequestPermission() { | ||
| if (ContextCompat.checkSelfPermission(this, musicPermission) == PackageManager.PERMISSION_GRANTED) { | ||
| loadMusicFiles() | ||
| } else { | ||
| showPermissionRequestDialog() | ||
| } | ||
| } | ||
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| private fun createNotificationChannel() { | ||
| if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { | ||
| val channel = NotificationChannel( | ||
| "music_channel", | ||
| "channel", | ||
| NotificationManager.IMPORTANCE_LOW | ||
| ).apply { description = "음악 재생 상태 표시" } | ||
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| val manager = getSystemService(NotificationManager::class.java) | ||
| manager.createNotificationChannel(channel) | ||
| } | ||
| } | ||
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| @RequiresPermission(Manifest.permission.POST_NOTIFICATIONS) | ||
| private fun showNowPlayingNotification(item: MusicItem) { | ||
| val notification = NotificationCompat.Builder(this, "music_channel") | ||
| .setSmallIcon(R.drawable.ic_media_play) | ||
| .setContentTitle(item.title) | ||
| .setContentText("artist: ${item.artist}") | ||
| .setPriority(NotificationCompat.PRIORITY_LOW) | ||
| .setOngoing(true) | ||
| .build() | ||
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| NotificationManagerCompat.from(this).notify(1, notification) | ||
| } | ||
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| private fun showPermissionRequestDialog() { | ||
| AlertDialog.Builder(this) | ||
| .setTitle("음악 및 오디오 접근 권한") | ||
| .setMessage("음악 파일을 불러오기 위해 권한이 필요합니다.") | ||
| .setPositiveButton("허용") { _, _ -> | ||
| requestPermissionLauncher.launch(musicPermission) | ||
| } | ||
| .setNegativeButton("거부") { _, _ -> | ||
| showPermissionDeniedDialog() | ||
| } | ||
| .setCancelable(false) | ||
| .show() | ||
| } | ||
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| private fun showPermissionDeniedDialog() { | ||
| AlertDialog.Builder(this) | ||
| .setTitle("권한 필요") | ||
| .setMessage("음악 파일을 표시하려면 권한이 필요합니다.\n\n설정에서 권한을 허용해주세요.") | ||
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| .setPositiveButton("설정 열기") { _, _ -> | ||
| openAppSettings() | ||
| } | ||
| .setNegativeButton("종료") { _, _ -> | ||
| finish() | ||
| } | ||
| .setCancelable(false) | ||
| .show() | ||
| } | ||
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| private fun openAppSettings() { | ||
| val intent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply { | ||
| data = Uri.fromParts("package", packageName, null) | ||
| } | ||
| startActivity(intent) | ||
| } | ||
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| private fun loadMusicFiles() { | ||
| val file = File("/sdcard/Music/Lil_Tecca_Dark_Thoughts.mp3", "/sdcard/Music/Frank_Ocean_Pink_+_White.mp3") | ||
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| if (file.exists()) { | ||
| MediaScannerConnection.scanFile(this, arrayOf(file.absolutePath), null, null) | ||
| } | ||
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| musicList.clear() | ||
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| 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 | ||
| ) | ||
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| val selection = "${MediaStore.Audio.Media.IS_MUSIC} = 1" | ||
| val sortOrder = "${MediaStore.Audio.Media.TITLE} ASC" | ||
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| val cursor: Cursor? = contentResolver.query( | ||
| MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, | ||
| projection, | ||
| selection, | ||
| null, | ||
| sortOrder | ||
| ) | ||
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| 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) | ||
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| while (it.moveToNext()) { | ||
| val id = it.getLong(idColumn) | ||
| val title = it.getString(titleColumn) ?: "Unknown Title" | ||
|
There was a problem hiding this comment. 이런 부분도 전부 strings.xml 이용해주세요 |
||
| val artist = it.getString(artistColumn) ?: "Unknown Artist" | ||
| val duration = formatDuration(it.getLong(durationColumn)) | ||
| val albumId = it.getLong(albumIdColumn) | ||
| val data = it.getString(dataColumn) ?: "" | ||
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| musicList.add(MusicItem(id, title, artist, duration, albumId, data)) | ||
| } | ||
| } | ||
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| musicAdapter.notifyDataSetChanged() | ||
| } | ||
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| private fun formatDuration(durationMs: Long): String { | ||
| val minutes = (durationMs / 1000) / 60 | ||
| val seconds = (durationMs / 1000) % 60 | ||
| return String.format("%02d:%02d", minutes, seconds) | ||
| } | ||
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| } | ||
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Toast message 는 strings.xml 써주세요