fix: 修复 getMaximumWriteLength 断开时未回调结果的问题 (#15)

bluetooth_low_energy/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.2.1
+
+* `Android` Fix the issue that `CentralController#getMaximumWriteLength` may throw.
+
 ## 2.2.0
 
 * Add `CentralController#getMaximumWriteLength` method.

bluetooth_low_energy/example/lib/main.dart

@@ -347,8 +347,7 @@ class _PeripheralViewState extends State<PeripheralView> {
           return;
         }
         const type = LogType.notify;
-        final value = hex.encode(eventArgs.value);
-        final log = Log(type, value);
+        final log = Log(type, eventArgs.value);
         logs.value = [
           ...logs.value,
           log,
@@ -497,9 +496,10 @@ class _PeripheralViewState extends State<PeripheralView> {
                     }
                     final time = DateFormat.Hms().format(log.time);
                     final value = log.value;
+                    final message = hex.encode(value);
                     return Text.rich(
                       TextSpan(
-                        text: '[$type]',
+                        text: '[$type:${value.length}]',
                         children: [
                           TextSpan(
                             text: ' $time: ',
@@ -508,7 +508,7 @@ class _PeripheralViewState extends State<PeripheralView> {
                             ),
                           ),
                           TextSpan(
-                            text: value,
+                            text: message,
                             style: theme.textTheme.bodyMedium,
                           ),
                         ],
@@ -641,8 +641,7 @@ class _PeripheralViewState extends State<PeripheralView> {
                                   final value = await centralController
                                       .readCharacteristic(characteristic);
                                   const type = LogType.read;
-                                  final text = hex.encode(value);
-                                  final log = Log(type, text);
+                                  final log = Log(type, value);
                                   logs.value = [...logs.value, log];
                                 }
                               : null,
@@ -660,7 +659,7 @@ class _PeripheralViewState extends State<PeripheralView> {
                                     type: GattCharacteristicWriteType
                                         .withResponse,
                                   );
-                                  final log = Log(LogType.write, text);
+                                  final log = Log(LogType.write, value);
                                   logs.value = [...logs.value, log];
                                 }
                               : null,
@@ -698,7 +697,7 @@ class _PeripheralViewState extends State<PeripheralView> {
 class Log {
   final DateTime time;
   final LogType type;
-  final String value;
+  final Uint8List value;
 
   Log(this.type, this.value) : time = DateTime.now();
 
@@ -707,7 +706,8 @@ class Log {
     final type = this.type.toString().split('.').last;
     final formatter = DateFormat.Hms();
     final time = formatter.format(this.time);
-    return '[$type]$time: $value';
+    final message = hex.encode(value);
+    return '[$type]$time: $message';
   }
 }
 

bluetooth_low_energy/example/pubspec.lock

@@ -23,15 +23,15 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "2.2.0"
+    version: "2.2.1"
   bluetooth_low_energy_android:
     dependency: transitive
     description:
       name: bluetooth_low_energy_android
-      sha256: fde30d9ef058f6859266a8e6d4218136958366de5978f69df2bb37d2b24679eb
+      sha256: "2098167f30a05cff40313fd49c459d326590b54dc6ea953cbe7ff145ce940e04"
       url: "https://pub.dev"
     source: hosted
-    version: "2.2.0"
+    version: "2.2.1"
   bluetooth_low_energy_darwin:
     dependency: transitive
     description:

bluetooth_low_energy/pubspec.yaml

@@ -1,6 +1,6 @@
 name: bluetooth_low_energy
 description: A Flutter plugin for controlling the bluetooth low energy.
-version: 2.2.0
+version: 2.2.1
 homepage: https://github.com/yanshouwang/bluetooth_low_energy
 
 environment:
@@ -11,7 +11,7 @@ dependencies:
   flutter:
     sdk: flutter
   bluetooth_low_energy_platform_interface: ^2.2.0
-  bluetooth_low_energy_android: ^2.2.0
+  bluetooth_low_energy_android: ^2.2.1
   bluetooth_low_energy_darwin: ^2.2.0
   bluetooth_low_energy_linux: ^2.2.0
   bluetooth_low_energy_windows: ^2.2.0

bluetooth_low_energy_android/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 2.2.1
+
+* Fix the issue that `CentralController#getMaximumWriteLength` may throw.
+
 ## 2.2.0
 
 * Add `CentralController#getMaximumWriteLength` method.

bluetooth_low_energy_android/android/src/main/kotlin/dev/yanshouwang/bluetooth_low_energy_android/MyCentralController.kt

@@ -450,6 +450,10 @@ class MyCentralController(private val context: Context, binaryMessenger: BinaryM
             gatt.close()
             cachedGATTs.remove(deviceKey)
             val error = IllegalStateException("GATT is disconnected with status: $status")
+            val getMaximumWriteLengthCallback = getMaximumWriteLengthCallbacks.remove(deviceKey)
+            if (getMaximumWriteLengthCallback != null) {
+                getMaximumWriteLengthCallback(Result.failure(error))
+            }
             val discoverGattCallback = discoverGattCallbacks.remove(deviceKey)
             if (discoverGattCallback != null) {
                 discoverGattCallback(Result.failure(error))

bluetooth_low_energy_android/pubspec.yaml

@@ -1,6 +1,6 @@
 name: bluetooth_low_energy_android
 description: Android implementation of the bluetooth_low_energy plugin.
-version: 2.2.0
+version: 2.2.1
 homepage: https://github.com/yanshouwang/bluetooth_low_energy
 
 environment: