feat: experimental fix for dying calls on android sdk34+

android/src/main/AndroidManifest.xml

@@ -8,6 +8,10 @@
     <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
     <uses-permission android:name="android.permission.VIBRATE" />
+    
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_PHONE_CALL" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <!-- Camera features -->
     <uses-feature android:name="android.hardware.camera" android:required="false" />
@@ -15,4 +19,13 @@
 
     <!-- Microphone feature -->
     <uses-feature android:name="android.hardware.microphone" android:required="true" />
+
+    <application>
+      <service
+        android:name=".LinphoneVoipService"
+        android:enabled="true"
+        android:exported="false"
+        android:foregroundServiceType="phoneCall"
+        android:stopWithTask="false" />
+    </application>
 </manifest>

android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LiblinphoneFlutterPlugin.kt

@@ -138,6 +138,7 @@ class LiblinphoneFlutterPlugin : FlutterPlugin, ActivityAware, MethodCallHandler
                     val callTo = call.argument<String>("callTo")!!
                     val isVideoEnabled = call.argument<Boolean>("isVideoEnabled")!!
                     linphoneBridge.makeCall(callTo, isVideoEnabled)
+                    startCallService()
                     result.success(true)
                 } catch (e: Exception) {
                     Log.e(TAG, "makeCall: ${e.message}")
@@ -147,11 +148,13 @@ class LiblinphoneFlutterPlugin : FlutterPlugin, ActivityAware, MethodCallHandler
 
             "answerCall" -> {
                 val res = linphoneBridge.answerCall()
+                if (res) startCallService()
                 result.success(res)
             }
 
             "hangupCall" -> {
                 val res = linphoneBridge.hangupCall()
+                if (res) startCallService()
                 result.success(res)
             }
 
@@ -240,5 +243,27 @@ class LiblinphoneFlutterPlugin : FlutterPlugin, ActivityAware, MethodCallHandler
 
     companion object {
         const val TAG = "LiblinphoneFlutterPlugin"
+
+        private fun startCallService() {
+            try {
+                val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
+                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                    activity.startForegroundService(intent)
+                } else {
+                    activity.startService(intent)
+                }
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to start call service: ${e.message}")
+            }
+        }
+
+        private fun stopCallService() {
+            try {
+                val intent = Intent(activity.applicationContext, LinphoneVoipService::class.java)
+                activity.stopService(intent)
+            } catch (e: Exception) {
+                Log.e(TAG, "Failed to stop call service: ${e.message}")
+            }
+        }
     }
 }

android/src/main/kotlin/xyz/nuark/liblinphone_flutter/LinphoneVoipService.kt

@@ -0,0 +1,84 @@
+package xyz.nuark.liblinphone_flutter
+
+import android.app.Notification
+import android.app.NotificationChannel
+import android.app.NotificationManager
+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 android.util.Log
+import androidx.core.app.NotificationCompat
+import android.content.pm.ServiceInfo
+
+class LinphoneVoipService : Service() {
+    private var wakeLock: PowerManager.WakeLock? = null
+    private val channelId = "linphone_voip_call_channel"
+    private val TAG = "LinphoneVoipService"
+
+    override fun onCreate() {
+        super.onCreate()
+        createNotificationChannel()
+        acquireWakeLock()
+    }
+
+    override fun onStartCommand(intent: Intent?, flags: Int, startId: Int): Int {
+        val notification = createNotification()
+        
+        // Android 14+ requires explicit service type in startForeground
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.UPSIDE_DOWN_CAKE) {
+            startForeground(100, notification, ServiceInfo.FOREGROUND_SERVICE_TYPE_PHONE_CALL)
+        } else {
+            startForeground(100, notification)
+        }
+        
+        Log.i(TAG, "Foreground service started. Mic will stay active.")
+        return START_NOT_STICKY
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        releaseWakeLock()
+        Log.i(TAG, "Foreground service stopped.")
+    }
+
+    override fun onBind(intent: Intent?): IBinder? = null
+
+    private fun createNotificationChannel() {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+            val channel = NotificationChannel(
+                channelId,
+                "Active VoIP Call",
+                NotificationManager.IMPORTANCE_LOW
+            ).apply {
+                setShowBadge(false)
+                setSound(null, null)
+            }
+            val manager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
+            manager.createNotificationChannel(channel)
+        }
+    }
+
+    private fun createNotification(): Notification {
+        return NotificationCompat.Builder(this, channelId)
+            .setContentTitle("Voice Call")
+            .setContentText("Call in progress")
+            .setSmallIcon(android.R.drawable.ic_menu_call) // Replace with your app's call icon
+            .setOngoing(true)
+            .setCategory(NotificationCompat.CATEGORY_CALL)
+            .setVisibility(NotificationCompat.VISIBILITY_PUBLIC)
+            .build()
+    }
+
+    private fun acquireWakeLock() {
+        val pm = getSystemService(Context.POWER_SERVICE) as PowerManager
+        wakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "Linphone::CallWakeLock")
+        wakeLock?.acquire(30 * 60 * 1000L) // 30 min fallback timeout
+    }
+
+    private fun releaseWakeLock() {
+        wakeLock?.takeIf { it.isHeld }?.release()
+    }
+}