From 6c76ca18db8c8774ed0a456e6623d24100587b9d Mon Sep 17 00:00:00 2001
From: TobiasRoeddiger <roeddiger@teco.edu>
Date: Mon, 5 Oct 2026 07:37:15 +0200
Subject: [PATCH] Release Android BLE clients when the Flutter engine closes

---
 example/pubspec.lock              | 4 ++--
 lib/src/managers/ble_manager.dart | 8 +++++++-
 pubspec.yaml                      | 2 +-
 3 files changed, 10 insertions(+), 4 deletions(-)

diff --git a/example/pubspec.lock b/example/pubspec.lock
index f13a885..cd02945 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -689,10 +689,10 @@ packages:
     dependency: transitive
     description:
       name: universal_ble
-      sha256: "8e5f4e2827375900b805fe3eb6cb8a305ade2303289d9a5cba0d09a3a37fea29"
+      sha256: bdebe7d4ff3a24f28b5e56c999104ea1584a9de55da4ee0b4c2346bcf8f8c528
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "2.3.0"
   uuid:
     dependency: transitive
     description:
diff --git a/lib/src/managers/ble_manager.dart b/lib/src/managers/ble_manager.dart
index f5eeb75..d49f32c 100644
--- a/lib/src/managers/ble_manager.dart
+++ b/lib/src/managers/ble_manager.dart
@@ -298,7 +298,13 @@ class BleManager extends BleGattManager {
     };
 
     try {
-      UniversalBle.connect(device.id);
+      UniversalBle.connect(
+        device.id,
+        platformConfig: ConnectionPlatformConfig(
+          // A new Flutter engine cannot receive the old GATT client's callbacks.
+          android: AndroidConnectionOptions(closeGattOnDetach: true),
+        ),
+      );
     } catch (error, stack) {
       _connectCallbacks.remove(device.id);
       _disconnectCallbacks.remove(device.id);
diff --git a/pubspec.yaml b/pubspec.yaml
index f241ced..fa7dc5b 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -21,7 +21,7 @@ dependencies:
   typed_data: ^1.3.2
   convert: ^3.1.1
   permission_handler: ^12.0.1
-  universal_ble: ^2.0.1
+  universal_ble: ^2.3.0
   logger: ^2.5.0
   # for fota:
   equatable: ^2.0.5