fix(android): prevent screen from turning off during active video calls in example application

example/android/app/src/main/kotlin/io/livekit/example/MainActivity.kt

@@ -1,6 +1,68 @@
 package io.livekit.example
 
+import android.os.Build
+import android.os.Bundle
+import android.view.WindowManager
 import io.flutter.embedding.android.FlutterActivity
+import io.flutter.embedding.engine.FlutterEngine
+import io.flutter.plugin.common.MethodChannel
 
-class MainActivity: FlutterActivity() {
-}
+class MainActivity : FlutterActivity() {
+
+    private val CHANNEL = "livekit_incall"
+
+    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
+        super.configureFlutterEngine(flutterEngine)
+
+        MethodChannel(
+            flutterEngine.dartExecutor.binaryMessenger,
+            CHANNEL
+        ).setMethodCallHandler { call, result ->
+            when (call.method) {
+                "enableInCall" -> {
+                    setInCallScreenFlags()
+                    result.success(null)
+                }
+                "disableInCall" -> {
+                    clearInCallScreenFlags()
+                    result.success(null)
+                }
+                else -> result.notImplemented()
+            }
+        }
+    }
+
+    private fun setInCallScreenFlags() {
+        val window = window
+
+        // Keep screen on during call
+        window.addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+
+        // Show over lock screen (modern way)
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
+            setTurnScreenOn(true)
+            setShowWhenLocked(true)
+        } else {
+            window.addFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON)
+            window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
+            window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD)
+        }
+    }
+
+    private fun clearInCallScreenFlags() {
+        val window = window
+
+        // Remove keep screen on
+        window.clearFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON)
+
+        // Reset lock screen behavior
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
+            setTurnScreenOn(false)
+            setShowWhenLocked(false)
+        } else {
+            window.clearFlags(WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON)
+            window.clearFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED)
+            window.clearFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD)
+        }
+    }
+}

example/lib/pages/room.dart

@@ -3,6 +3,7 @@ import 'dart:convert';
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:livekit_client/livekit_client.dart';
 
 import '../exts.dart';
@@ -34,6 +35,7 @@ class _RoomPageState extends State<RoomPage> {
   @override
   void initState() {
     super.initState();
+    unawaited(enableInCallFlags());
     // add callback for a `RoomEvent` as opposed to a `ParticipantEvent`
     widget.room.addListener(_onRoomDidUpdate);
     // add callbacks for finer grained events
@@ -63,6 +65,7 @@ class _RoomPageState extends State<RoomPage> {
     widget.room.removeListener(_onRoomDidUpdate);
     unawaited(_disposeRoomAsync());
     onWindowShouldClose = null;
+    unawaited(disableInCallFlags());
     super.dispose();
   }
 
@@ -71,6 +74,16 @@ class _RoomPageState extends State<RoomPage> {
     await widget.room.dispose();
   }
 
+  static const platform = MethodChannel('livekit_incall');
+
+  Future<void> enableInCallFlags() async {
+    await platform.invokeMethod('enableInCall');
+  }
+
+  Future<void> disableInCallFlags() async {
+    await platform.invokeMethod('disableInCall');
+  }
+
   /// for more information, see [event types](https://docs.livekit.io/client/events/#events)
   void _setUpListeners() => _listener
     ..on<RoomDisconnectedEvent>((event) async {

pubspec.lock

@@ -436,10 +436,10 @@ packages:
     dependency: transitive
     description:
       name: matcher
-      sha256: dc0b7dc7651697ea4ff3e69ef44b0407ea32c487a39fff6a4004fa585e901861
+      sha256: "12956d0ad8390bbcc63ca2e1469c0619946ccb52809807067a7020d57e647aa6"
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.19"
+    version: "0.12.18"
   material_color_utilities:
     dependency: transitive
     description:
@@ -737,10 +737,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "8161c84903fd860b26bfdefb7963b3f0b68fee7adea0f59ef805ecca346f0c7a"
+      sha256: "93167629bfc610f71560ab9312acdda4959de4df6fac7492c89ff0d3886f6636"
       url: "https://pub.dev"
     source: hosted
-    version: "0.7.10"
+    version: "0.7.9"
   timing:
     dependency: transitive
     description: