From 3acc99fabf45d400c11b42a21d12312eb1e53023 Mon Sep 17 00:00:00 2001
From: Joshua Wellbrock <info@joshuawellbrock.com>
Date: Wed, 20 Nov 2024 13:49:36 +0100
Subject: [PATCH 1/2] feat: example_advanced disconnect on app pause

---
 .../lib/advanced_workflow.dart                | 36 ++++++++++++++++++-
 1 file changed, 35 insertions(+), 1 deletion(-)

diff --git a/example/example_advanced/lib/advanced_workflow.dart b/example/example_advanced/lib/advanced_workflow.dart
index beb2b57..95cc2b7 100644
--- a/example/example_advanced/lib/advanced_workflow.dart
+++ b/example/example_advanced/lib/advanced_workflow.dart
@@ -12,11 +12,45 @@ class AdvancedWorkflow extends StatefulWidget {
   }
 }
 
-class _AdvancedWorkflowState extends State<AdvancedWorkflow> {
+// The WidgetsBindingObserver is used to disconnect the reader
+// if the app is moved to background
+class _AdvancedWorkflowState extends State<AdvancedWorkflow> 
+  with WidgetsBindingObserver {
 
   final UrpBleStrategy _bleStrategy = UrpBleStrategy();
   late final ImpReader _impReader = ImpReader(connectionStrategy: _bleStrategy);
 
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addObserver(this);
+  }
+
+  @override
+  void dispose() {
+    WidgetsBinding.instance.removeObserver(this);
+    super.dispose();
+  }
+
+  // Disconnect the device if the app is paused
+  @override
+  void didChangeAppLifecycleState(AppLifecycleState state) {
+    switch (state) {
+      case AppLifecycleState.inactive:
+        break;
+      case AppLifecycleState.detached:
+        break;
+      case AppLifecycleState.paused:
+        _bleStrategy.disconnectDevice();
+        break;
+      case AppLifecycleState.resumed:
+        break;
+      case AppLifecycleState.hidden:
+        break;
+    }
+    super.didChangeAppLifecycleState(state);
+  }
+
   // Find and connect a IMP Reader
   Future<void> findAndConnect() async {
     await _bleStrategy.findAndConnectDevice(

From 04424a172a9020a047d885b63a6732e141015f24 Mon Sep 17 00:00:00 2001
From: Joshua Wellbrock <info@joshuawellbrock.com>
Date: Wed, 20 Nov 2024 13:56:20 +0100
Subject: [PATCH 2/2] fix: disconnect only if device is connected

---
 example/example_advanced/lib/advanced_workflow.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/example/example_advanced/lib/advanced_workflow.dart b/example/example_advanced/lib/advanced_workflow.dart
index 95cc2b7..e99caf9 100644
--- a/example/example_advanced/lib/advanced_workflow.dart
+++ b/example/example_advanced/lib/advanced_workflow.dart
@@ -41,7 +41,9 @@ class _AdvancedWorkflowState extends State<AdvancedWorkflow>
       case AppLifecycleState.detached:
         break;
       case AppLifecycleState.paused:
-        _bleStrategy.disconnectDevice();
+        if(_bleStrategy.status == ConnectionStatus.connected) {
+          _bleStrategy.disconnectDevice();
+        }
         break;
       case AppLifecycleState.resumed:
         break;