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feat(mobile) Run background service after being killed (#789)

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This commit is contained in:
Fynn Petersen-Frey
2022-10-06 18:32:45 +02:00
committed by GitHub
parent 7587f858ae
commit a3aca4acb5
6 changed files with 40 additions and 53 deletions
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25
mobile/android/app/src/main/kotlin/com/example/mobile/AppClearedService.kt
View File

@@ -1,25 +0,0 @@
package app.alextran.immich
import android.app.Service
import android.content.Intent
import android.os.IBinder
/**
* Catches the event when either the system or the user kills the app
* (does not apply on force close!)
*/
class AppClearedService() : Service() {
override fun onBind(intent: Intent): IBinder? {
return null
}
override fun onStartCommand(intent: Intent, flags: Int, startId: Int): Int {
return START_NOT_STICKY;
}
override fun onTaskRemoved(rootIntent: Intent) {
ContentObserverWorker.workManagerAppClearedWorkaround(applicationContext)
stopSelf();
}
}

15
mobile/android/app/src/main/kotlin/com/example/mobile/BackgroundServicePlugin.kt
View File

@@ -10,7 +10,7 @@ import io.flutter.plugin.common.MethodChannel
* Android plugin for Dart `BackgroundService`
*
* Receives messages/method calls from the foreground Dart side to manage
* the background service, e.g. start (enqueue), stop (cancel)
* the background service, e.g. start (enqueue), stop (cancel)
*/
class BackgroundServicePlugin : FlutterPlugin, MethodChannel.MethodCallHandler {
@@ -38,14 +38,15 @@ class BackgroundServicePlugin : FlutterPlugin, MethodChannel.MethodCallHandler {
override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
val ctx = context!!
when(call.method) {
when (call.method) {
"enable" -> {
val args = call.arguments<ArrayList<*>>()!!
ctx.getSharedPreferences(BackupWorker.SHARED_PREF_NAME, Context.MODE_PRIVATE)
.edit()
.putLong(BackupWorker.SHARED_PREF_CALLBACK_KEY, args.get(0) as Long)
.putString(BackupWorker.SHARED_PREF_NOTIFICATION_TITLE, args.get(1) as String)
.apply()
.edit()
.putBoolean(ContentObserverWorker.SHARED_PREF_SERVICE_ENABLED, true)
.putLong(BackupWorker.SHARED_PREF_CALLBACK_KEY, args.get(0) as Long)
.putString(BackupWorker.SHARED_PREF_NOTIFICATION_TITLE, args.get(1) as String)
.apply()
ContentObserverWorker.enable(ctx, immediate = args.get(2) as Boolean)
result.success(true)
}
@@ -54,7 +55,7 @@ class BackgroundServicePlugin : FlutterPlugin, MethodChannel.MethodCallHandler {
val requireUnmeteredNetwork = args.get(0) as Boolean
val requireCharging = args.get(1) as Boolean
ContentObserverWorker.configureWork(ctx, requireUnmeteredNetwork, requireCharging)
result.success(true)
result.success(true)
}
"disable" -> {
ContentObserverWorker.disable(ctx)

7
mobile/android/app/src/main/kotlin/com/example/mobile/ContentObserverWorker.kt
View File

@@ -46,9 +46,6 @@ class ContentObserverWorker(ctx: Context, params: WorkerParameters) : Worker(ctx
* @param context Android Context
*/
fun enable(context: Context, immediate: Boolean = false) {
// migration to remove any old active background task
WorkManager.getInstance(context).cancelUniqueWork("immich/photoListener")
enqueueObserverWorker(context, ExistingWorkPolicy.KEEP)
Log.d(TAG, "enabled ContentObserverWorker")
if (immediate) {
@@ -123,8 +120,10 @@ class ContentObserverWorker(ctx: Context, params: WorkerParameters) : Worker(ctx
WorkManager.getInstance(context).enqueueUniqueWork(TASK_NAME_OBSERVER, policy, work)
}
private fun startBackupWorker(context: Context, delayMilliseconds: Long) {
fun startBackupWorker(context: Context, delayMilliseconds: Long) {
val sp = context.getSharedPreferences(BackupWorker.SHARED_PREF_NAME, Context.MODE_PRIVATE)
if (!sp.getBoolean(SHARED_PREF_SERVICE_ENABLED, false))
return
val requireWifi = sp.getBoolean(SHARED_PREF_REQUIRE_WIFI, true)
val requireCharging = sp.getBoolean(SHARED_PREF_REQUIRE_CHARGING, false)
BackupWorker.enqueueBackupWorker(context, requireWifi, requireCharging, delayMilliseconds)

19
mobile/android/app/src/main/kotlin/com/example/mobile/ImmichApp.kt Normal file
View File

@@ -0,0 +1,19 @@
package app.alextran.immich
import android.app.Application
import androidx.work.Configuration
import androidx.work.WorkManager
class ImmichApp : Application() {
override fun onCreate() {
super.onCreate()
val config = Configuration.Builder().build()
WorkManager.initialize(this, config)
// always start BackupWorker after WorkManager init; this fixes the following bug:
// After the process is killed (by user or system), the first trigger (taking a new picture) is lost.
// Thus, the BackupWorker is not started. If the system kills the process after each initialization
// (because of low memory etc.), the backup is never performed.
// As a workaround, we also run a backup check when initializing the application
ContentObserverWorker.startBackupWorker(context = this, delayMilliseconds = 0)
}
}

14
mobile/android/app/src/main/kotlin/com/example/mobile/MainActivity.kt
View File

@@ -5,21 +5,11 @@ import io.flutter.embedding.engine.FlutterEngine
import android.os.Bundle
import android.content.Intent
class MainActivity: FlutterActivity() {
class MainActivity : FlutterActivity() {
override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
super.configureFlutterEngine(flutterEngine)
flutterEngine.getPlugins().add(BackgroundServicePlugin())
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
try {
startService(Intent(getBaseContext(), AppClearedService::class.java));
} catch (e: Exception) {
// startService must not be called when app is in background (crashes app)
// there is nothing we can do
}
flutterEngine.plugins.add(BackgroundServicePlugin())
}
}