CalvinBackup/SpotiFLAC-Mobile
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feat: background download service + queue persistence (v1.6.1)

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- Add foreground service for background downloads with wake lock
- Persist download queue to SharedPreferences for app restart recovery
- Fix share intent causing app restart (singleTask + onNewIntent)
- Fix back button clearing state during loading
- Upgrade Kotlin to 2.3.0 for share_plus 12.0.1 compatibility
- Add WAKE_LOCK permission for foreground service
This commit is contained in:
zarzet
2026-01-02 18:14:19 +07:00
parent 39ddb7a14f
commit 2043370b6c
13 changed files with 311 additions and 49 deletions
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android/.kotlin/sessions/kotlin-compiler-11752605725870772170.salive
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android/app/src/main/AndroidManifest.xml
+1
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@@ -12,6 +12,7 @@
<uses-permission android:name="android.permission.FOREGROUND_SERVICE_DATA_SYNC" />
<uses-permission android:name="android.permission.POST_NOTIFICATIONS" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.WAKE_LOCK" />
<application
android:label="SpotiFLAC"
android/app/src/main/kotlin/com/zarz/spotiflac/DownloadService.kt
+165 -37
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@@ -5,83 +5,211 @@ import android.app.NotificationChannel
import android.app.NotificationManager
import android.app.PendingIntent
import android.app.Service
import android.content.Context
import android.content.Intent
import android.os.Build
import android.os.IBinder
import android.os.PowerManager
import androidx.core.app.NotificationCompat
/**
* Foreground service to keep downloads running when app is in background.
* This prevents Android from killing the download process or throttling network.
*/
class DownloadService : Service() {
companion object {
const val CHANNEL_ID = "spotiflac_download_channel"
const val NOTIFICATION_ID = 1
const val ACTION_START = "com.zarz.spotiflac.START_DOWNLOAD"
const val ACTION_STOP = "com.zarz.spotiflac.STOP_DOWNLOAD"
private const val CHANNEL_ID = "download_channel"
private const val NOTIFICATION_ID = 1001
private const val WAKELOCK_TAG = "SpotiFLAC:DownloadWakeLock"
const val ACTION_START = "com.zarz.spotiflac.action.START_DOWNLOAD"
const val ACTION_STOP = "com.zarz.spotiflac.action.STOP_DOWNLOAD"
const val ACTION_UPDATE_PROGRESS = "com.zarz.spotiflac.action.UPDATE_PROGRESS"
const val EXTRA_TRACK_NAME = "track_name"
const val EXTRA_ARTIST_NAME = "artist_name"
const val EXTRA_PROGRESS = "progress"
const val EXTRA_TOTAL = "total"
const val EXTRA_QUEUE_COUNT = "queue_count"
private var isRunning = false
fun isServiceRunning(): Boolean = isRunning
fun start(context: Context, trackName: String = "", artistName: String = "", queueCount: Int = 0) {
val intent = Intent(context, DownloadService::class.java).apply {
action = ACTION_START
putExtra(EXTRA_TRACK_NAME, trackName)
putExtra(EXTRA_ARTIST_NAME, artistName)
putExtra(EXTRA_QUEUE_COUNT, queueCount)
}
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
context.startForegroundService(intent)
} else {
context.startService(intent)
}
}
fun stop(context: Context) {
val intent = Intent(context, DownloadService::class.java).apply {
action = ACTION_STOP
}
context.startService(intent)
}
fun updateProgress(context: Context, trackName: String, artistName: String, progress: Long, total: Long, queueCount: Int) {
val intent = Intent(context, DownloadService::class.java).apply {
action = ACTION_UPDATE_PROGRESS
putExtra(EXTRA_TRACK_NAME, trackName)
putExtra(EXTRA_ARTIST_NAME, artistName)
putExtra(EXTRA_PROGRESS, progress)
putExtra(EXTRA_TOTAL, total)
putExtra(EXTRA_QUEUE_COUNT, queueCount)
}
context.startService(intent)
}
}
private var wakeLock: PowerManager.WakeLock? = null
private var currentTrackName = ""
private var currentArtistName = ""
private var queueCount = 0
override fun onCreate() {
super.onCreate()
createNotificationChannel()
}
override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
when (intent?.action) {
ACTION_START -> startForegroundService()
ACTION_STOP -> stopSelf()
ACTION_START -> {
currentTrackName = intent.getStringExtra(EXTRA_TRACK_NAME) ?: ""
currentArtistName = intent.getStringExtra(EXTRA_ARTIST_NAME) ?: ""
queueCount = intent.getIntExtra(EXTRA_QUEUE_COUNT, 0)
startForegroundService()
}
ACTION_STOP -> {
stopForegroundService()
}
ACTION_UPDATE_PROGRESS -> {
currentTrackName = intent.getStringExtra(EXTRA_TRACK_NAME) ?: currentTrackName
currentArtistName = intent.getStringExtra(EXTRA_ARTIST_NAME) ?: currentArtistName
val progress = intent.getLongExtra(EXTRA_PROGRESS, 0)
val total = intent.getLongExtra(EXTRA_TOTAL, 0)
queueCount = intent.getIntExtra(EXTRA_QUEUE_COUNT, queueCount)
updateNotification(progress, total)
}
}
return START_NOT_STICKY
return START_STICKY
}
override fun onBind(intent: Intent?): IBinder? = null
private fun createNotificationChannel() {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
val channel = NotificationChannel(
CHANNEL_ID,
"Download Progress",
"Download Service",
NotificationManager.IMPORTANCE_LOW
).apply {
description = "Shows download progress for SpotiFLAC"
description = "Shows download progress"
setShowBadge(false)
}
val manager = getSystemService(NotificationManager::class.java)
manager.createNotificationChannel(channel)
}
}
private fun startForegroundService() {
val notification = createNotification("Downloading...", 0)
isRunning = true
// Acquire wake lock to prevent CPU sleep
val powerManager = getSystemService(Context.POWER_SERVICE) as PowerManager
wakeLock = powerManager.newWakeLock(
PowerManager.PARTIAL_WAKE_LOCK,
WAKELOCK_TAG
).apply {
acquire(60 * 60 * 1000L) // 1 hour max
}
val notification = buildNotification(0, 0)
startForeground(NOTIFICATION_ID, notification)
}
fun updateProgress(trackName: String, progress: Int) {
val notification = createNotification(trackName, progress)
private fun stopForegroundService() {
isRunning = false
wakeLock?.let {
if (it.isHeld) {
it.release()
}
}
wakeLock = null
stopForeground(STOP_FOREGROUND_REMOVE)
stopSelf()
}
private fun updateNotification(progress: Long, total: Long) {
if (!isRunning) return
val notification = buildNotification(progress, total)
val manager = getSystemService(NotificationManager::class.java)
manager.notify(NOTIFICATION_ID, notification)
}
private fun createNotification(title: String, progress: Int): Notification {
val intent = Intent(this, MainActivity::class.java)
private fun buildNotification(progress: Long, total: Long): Notification {
val pendingIntent = PendingIntent.getActivity(
this, 0, intent,
this,
0,
Intent(this, MainActivity::class.java),
PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
)
val stopIntent = Intent(this, DownloadService::class.java).apply {
action = ACTION_STOP
val title = if (queueCount > 1) {
"Downloading $queueCount tracks"
} else if (currentTrackName.isNotEmpty()) {
currentTrackName
} else {
"Downloading..."
}
val stopPendingIntent = PendingIntent.getService(
this, 0, stopIntent,
PendingIntent.FLAG_UPDATE_CURRENT or PendingIntent.FLAG_IMMUTABLE
)
return NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle("SpotiFLAC")
.setContentText(title)
val text = if (currentArtistName.isNotEmpty() && queueCount <= 1) {
currentArtistName
} else if (total > 0) {
val progressPercent = (progress * 100 / total).toInt()
val progressMB = progress / (1024.0 * 1024.0)
val totalMB = total / (1024.0 * 1024.0)
String.format("%.1f / %.1f MB (%d%%)", progressMB, totalMB, progressPercent)
} else {
"Preparing download..."
}
val builder = NotificationCompat.Builder(this, CHANNEL_ID)
.setContentTitle(title)
.setContentText(text)
.setSmallIcon(android.R.drawable.stat_sys_download)
.setProgress(100, progress, progress == 0)
.setOngoing(true)
.setContentIntent(pendingIntent)
.addAction(android.R.drawable.ic_menu_close_clear_cancel, "Cancel", stopPendingIntent)
.build()
.setOngoing(true)
.setOnlyAlertOnce(true)
.setPriority(NotificationCompat.PRIORITY_LOW)
.setCategory(NotificationCompat.CATEGORY_PROGRESS)
if (total > 0) {
builder.setProgress(100, (progress * 100 / total).toInt(), false)
} else {
builder.setProgress(0, 0, true)
}
return builder.build()
}
override fun onDestroy() {
isRunning = false
wakeLock?.let {
if (it.isHeld) {
it.release()
}
}
super.onDestroy()
}
}
android/app/src/main/kotlin/com/zarz/spotiflac/MainActivity.kt
+23
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@@ -167,6 +167,29 @@ class MainActivity: FlutterActivity() {
}
result.success(null)
}
"startDownloadService" -> {
val trackName = call.argument<String>("track_name") ?: ""
val artistName = call.argument<String>("artist_name") ?: ""
val queueCount = call.argument<Int>("queue_count") ?: 0
DownloadService.start(this@MainActivity, trackName, artistName, queueCount)
result.success(null)
}
"stopDownloadService" -> {
DownloadService.stop(this@MainActivity)
result.success(null)
}
"updateDownloadServiceProgress" -> {
val trackName = call.argument<String>("track_name") ?: ""
val artistName = call.argument<String>("artist_name") ?: ""
val progress = call.argument<Long>("progress") ?: 0L
val total = call.argument<Long>("total") ?: 0L
val queueCount = call.argument<Int>("queue_count") ?: 0
DownloadService.updateProgress(this@MainActivity, trackName, artistName, progress, total, queueCount)
result.success(null)
}
"isDownloadServiceRunning" -> {
result.success(DownloadService.isServiceRunning())
}
else -> result.notImplemented()
}
} catch (e: Exception) {
android/settings.gradle.kts
+1 -1
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@@ -20,7 +20,7 @@ pluginManagement {
plugins {
id("dev.flutter.flutter-plugin-loader") version "1.0.0"
id("com.android.application") version "8.11.1" apply false
id("org.jetbrains.kotlin.android") version "2.2.20" apply false
id("org.jetbrains.kotlin.android") version "2.3.0" apply false
}
include(":app")