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

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: