Request battery optimization exemption on launch to survive aggressive OEM battery killers

Author: utsapoddar

work_timer/android/app/src/main/AndroidManifest.xml

@@ -4,6 +4,7 @@
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SPECIAL_USE"/>
     <uses-permission android:name="android.permission.WAKE_LOCK"/>
+    <uses-permission android:name="android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS"/>
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" android:maxSdkVersion="32"/>
     <uses-permission android:name="android.permission.USE_EXACT_ALARM"/>
     <application

work_timer/android/app/src/main/kotlin/com/utsapoddar/sift/MainActivity.kt

@@ -6,8 +6,11 @@ import android.content.Context
 import android.content.Intent
 import android.content.IntentFilter
 import android.content.pm.PackageManager
+import android.net.Uri
 import android.os.Build
 import android.os.Bundle
+import android.os.PowerManager
+import android.provider.Settings
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import io.flutter.embedding.android.FlutterActivity
@@ -79,6 +82,15 @@ class MainActivity : FlutterActivity() {
             ActivityCompat.requestPermissions(
                 this, arrayOf(Manifest.permission.POST_NOTIFICATIONS), 1001)
         }
+        // Request battery optimization exemption so the timer survives on aggressive OEMs
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            val pm = getSystemService(Context.POWER_SERVICE) as PowerManager
+            if (!pm.isIgnoringBatteryOptimizations(packageName)) {
+                startActivity(Intent(Settings.ACTION_REQUEST_IGNORE_BATTERY_OPTIMIZATIONS).apply {
+                    data = Uri.parse("package:$packageName")
+                })
+            }
+        }
         val filter = IntentFilter().apply {
             addAction(TimerService.ACTION_STOP)
             addAction(TimerService.ACTION_SILENCE)