Refactor Bluetooth availability handling in ScannerScreen and AppDrawer

- Removed the tooltip for Bluetooth availability from ScannerScreen and integrated the BleAvailabilityIcon directly into the AppDrawer.
- Updated the AppDrawer to accept Bluetooth availability state and a callback for state changes.
- Simplified button labels in ScannerScreen and ScannedDevicesPlaceholderWidget for clarity.
- Adjusted padding for buttons to enhance UI consistency.

example/lib/home/scanner_screen.dart

@@ -7,7 +7,6 @@ import 'package:universal_ble/universal_ble.dart';
 import 'package:universal_ble_example/data/company_identifier_service.dart';
 import 'package:universal_ble_example/data/mock_universal_ble.dart';
 import 'package:universal_ble_example/data/scan_controller.dart';
-import 'package:universal_ble_example/home/widgets/ble_availability_icon.dart';
 import 'package:universal_ble_example/home/widgets/drawer.dart';
 import 'package:universal_ble_example/home/widgets/scan_filter_widget.dart';
 import 'package:universal_ble_example/home/widgets/scanned_devices_placeholder_widget.dart';
@@ -370,25 +369,6 @@ class _ScannerScreenState extends State<ScannerScreen> {
     }
   }
 
-  String _getBluetoothAvailabilityTooltip() {
-    switch (bleAvailabilityState) {
-      case AvailabilityState.poweredOn:
-        return 'Bluetooth is on';
-      case AvailabilityState.poweredOff:
-        return 'Bluetooth is off';
-      case AvailabilityState.resetting:
-        return 'Bluetooth is resetting';
-      case AvailabilityState.unauthorized:
-        return 'Bluetooth permission denied';
-      case AvailabilityState.unsupported:
-        return 'Bluetooth not supported';
-      case AvailabilityState.unknown:
-        return 'Bluetooth status unknown';
-      case null:
-        return 'Checking Bluetooth status...';
-    }
-  }
-
   @override
   void setState(VoidCallback fn) {
     if (mounted) super.setState(fn);
@@ -429,6 +409,13 @@ class _ScannerScreenState extends State<ScannerScreen> {
             UniversalBle.queueType = _queueType;
           });
         },
+        availabilityState: bleAvailabilityState,
+        onAvailabilityStateChanged: (state) {
+          setState(() => bleAvailabilityState = state);
+          if (state == AvailabilityState.poweredOn) {
+            _tryAutoStartScan();
+          }
+        },
       ),
       appBar: AppBar(
         title: Row(
@@ -477,18 +464,6 @@ class _ScannerScreenState extends State<ScannerScreen> {
                 ),
               ),
             ),
-            const SizedBox(width: 12),
-            Tooltip(
-              message: _getBluetoothAvailabilityTooltip(),
-              triggerMode: TooltipTriggerMode.tap,
-              child: BleAvailabilityIcon(onAvailabilityStateChanged: (state) {
-                setState(() => bleAvailabilityState = state);
-                // Auto-start scanning when Bluetooth becomes available
-                if (state == AvailabilityState.poweredOn) {
-                  _tryAutoStartScan();
-                }
-              }),
-            ),
           ],
         ),
         elevation: 0,
@@ -519,7 +494,7 @@ class _ScannerScreenState extends State<ScannerScreen> {
                 size: 20,
               ),
               label: Text(
-                _scanController?.isScanning == true ? 'Stop Scan' : 'Start Scan',
+                _scanController?.isScanning == true ? 'Stop' : 'Scan',
                 style: const TextStyle(
                   fontSize: 14,
                   fontWeight: FontWeight.w600,
@@ -535,7 +510,7 @@ class _ScannerScreenState extends State<ScannerScreen> {
                         ? colorScheme.onError
                         : colorScheme.onPrimary,
                 padding: const EdgeInsets.symmetric(
-                  horizontal: 16,
+                  horizontal: 12,
                   vertical: 12,
                 ),
                 shape: RoundedRectangleBorder(

example/lib/home/widgets/drawer.dart

@@ -2,6 +2,7 @@ import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:package_info_plus/package_info_plus.dart';
 import 'package:universal_ble/universal_ble.dart';
+import 'package:universal_ble_example/home/widgets/ble_availability_icon.dart';
 import 'package:universal_ble_example/home/scanner_screen.dart';
 import 'package:universal_ble_example/home/system_devices_screen.dart';
 import 'package:url_launcher/url_launcher.dart';
@@ -9,11 +10,15 @@ import 'package:url_launcher/url_launcher.dart';
 class AppDrawer extends StatefulWidget {
   final QueueType? queueType;
   final Function(QueueType)? onQueueTypeChanged;
+  final AvailabilityState? availabilityState;
+  final void Function(AvailabilityState)? onAvailabilityStateChanged;
 
   const AppDrawer({
     super.key,
     this.queueType,
     this.onQueueTypeChanged,
+    this.availabilityState,
+    this.onAvailabilityStateChanged,
   });
 
   @override
@@ -62,6 +67,14 @@ class _AppDrawerState extends State<AppDrawer> {
               ),
             ),
           ),
+          if (widget.availabilityState != null &&
+              widget.onAvailabilityStateChanged != null)
+            ListTile(
+              leading: BleAvailabilityIcon(
+                onAvailabilityStateChanged: widget.onAvailabilityStateChanged!,
+              ),
+              title: Text(_getBluetoothAvailabilityLabel(widget.availabilityState!)),
+            ),
           ListTile(
             leading: const Icon(Icons.search),
             title: const Text('Scanner'),
@@ -180,6 +193,23 @@ class _AppDrawerState extends State<AppDrawer> {
     );
   }
 
+  String _getBluetoothAvailabilityLabel(AvailabilityState state) {
+    switch (state) {
+      case AvailabilityState.poweredOn:
+        return 'Bluetooth is on';
+      case AvailabilityState.poweredOff:
+        return 'Bluetooth is off';
+      case AvailabilityState.resetting:
+        return 'Bluetooth is resetting';
+      case AvailabilityState.unauthorized:
+        return 'Bluetooth permission denied';
+      case AvailabilityState.unsupported:
+        return 'Bluetooth not supported';
+      case AvailabilityState.unknown:
+        return 'Bluetooth state unknown';
+    }
+  }
+
   String _getQueueTypeLabel(QueueType queueType) {
     switch (queueType) {
       case QueueType.global:

example/lib/home/widgets/scanned_devices_placeholder_widget.dart

@@ -52,7 +52,7 @@ class ScannedDevicesPlaceholderWidget extends StatelessWidget {
               onPressed: onTap,
               icon: const Icon(Icons.play_arrow, size: 24),
               label: const Text(
-                'Start Scan',
+                'Scan',
                 style: TextStyle(
                   fontSize: 18,
                   fontWeight: FontWeight.w600,
@@ -62,7 +62,7 @@ class ScannedDevicesPlaceholderWidget extends StatelessWidget {
                 backgroundColor: colorScheme.primary,
                 foregroundColor: colorScheme.onPrimary,
                 padding: const EdgeInsets.symmetric(
-                  horizontal: 32,
+                  horizontal: 12,
                   vertical: 16,
                 ),
                 shape: RoundedRectangleBorder(

example/lib/peripheral_details/peripheral_detail_page.dart

@@ -36,7 +36,6 @@ class _PeripheralDetailPageState extends State<PeripheralDetailPage> {
   List<BleService> discoveredServices = [];
   final List<String> _logs = [];
   final binaryCode = TextEditingController();
-  bool _isLoading = false;
   bool _isDiscoveringServices = false;
   bool _isDeviceInfoExpanded = false;
   bool _isDeviceActionsExpanded = true;
@@ -407,18 +406,11 @@ class _PeripheralDetailPageState extends State<PeripheralDetailPage> {
     Future<T> Function() action, {
     Function(dynamic error)? onError,
   }) async {
-    setState(() {
-      _isLoading = true;
-    });
     try {
       return await action();
     } catch (e) {
       onError?.call(e);
       rethrow;
-    } finally {
-      setState(() {
-        _isLoading = false;
-      });
     }
   }
 
@@ -560,7 +552,7 @@ class _PeripheralDetailPageState extends State<PeripheralDetailPage> {
                       size: 20,
                     ),
                     label: Text(
-                      _scanController!.isScanning ? 'Stop Scan' : 'Start Scan',
+                      _scanController!.isScanning ? 'Stop' : 'Scan',
                       style: const TextStyle(
                         fontSize: 14,
                         fontWeight: FontWeight.w600,
@@ -574,7 +566,7 @@ class _PeripheralDetailPageState extends State<PeripheralDetailPage> {
                           ? colorScheme.onError
                           : colorScheme.onPrimary,
                       padding: const EdgeInsets.symmetric(
-                        horizontal: 16,
+                        horizontal: 12,
                         vertical: 12,
                       ),
                       shape: RoundedRectangleBorder(
@@ -584,72 +576,6 @@ class _PeripheralDetailPageState extends State<PeripheralDetailPage> {
                     ),
                   ),
                 ),
-              Visibility.maintain(
-                visible: _isLoading,
-                child: Padding(
-                  padding: const EdgeInsets.all(16.0),
-                  child: SizedBox(
-                    width: 20,
-                    height: 20,
-                    child: CircularProgressIndicator(
-                      strokeWidth: 2,
-                      valueColor: AlwaysStoppedAnimation<Color>(
-                        colorScheme.primary,
-                      ),
-                    ),
-                  ),
-                ),
-              ),
-              if (deviceType != DeviceType.desktop)
-                Padding(
-                  padding: const EdgeInsets.all(8.0),
-                  child: Icon(
-                    isConnected
-                        ? Icons.bluetooth_connected
-                        : Icons.bluetooth_disabled,
-                    color: isConnected
-                        ? Colors.green
-                        : colorScheme.onSurface.withValues(alpha: 0.6),
-                    size: 20,
-                  ),
-                )
-              else
-                Container(
-                  margin: const EdgeInsets.only(right: 16),
-                  padding:
-                      const EdgeInsets.symmetric(horizontal: 12, vertical: 6),
-                  decoration: BoxDecoration(
-                    color: isConnected
-                        ? Colors.green.withValues(alpha: 0.2)
-                        : Colors.orange.withValues(alpha: 0.2),
-                    borderRadius: BorderRadius.circular(12),
-                  ),
-                  child: Row(
-                    mainAxisSize: MainAxisSize.min,
-                    children: [
-                      Icon(
-                        isConnected
-                            ? Icons.check_circle
-                            : Icons.bluetooth_disabled,
-                        size: 16,
-                        color: isConnected
-                            ? Colors.green.shade700
-                            : Colors.orange.shade700,
-                      ),
-                      const SizedBox(width: 6),
-                      Text(
-                        isConnected ? 'Connected' : 'Disconnected',
-                        style: TextStyle(
-                          color: isConnected
-                              ? Colors.green.shade700
-                              : Colors.orange.shade700,
-                          fontSize: 12,
-                          fontWeight: FontWeight.w600,
-                        ),
-                      ),
-                    ],
-                  ),
-                ),
             ],
           ),
           body: Row(