Migrate platform channels to Pigeon 29

.github/workflows/pull_request.yml

@@ -90,9 +90,33 @@ jobs:
           cmake --build build/windows-tests
           ctest --test-dir build/windows-tests --output-on-failure
 
-  pana:
+  pigeon:
     runs-on: ubuntu-latest
 
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up Flutter
+        uses: subosito/flutter-action@v2
+        with:
+          channel: stable
+
+      - name: Install dependencies
+        run: flutter pub get
+
+      # Keeps the committed Pigeon outputs in lockstep with the pinned
+      # `pigeon` version. Without this, the constraint and the generated
+      # Kotlin/Swift/C++/Dart can drift (see the Pigeon 29 migration).
+      - name: Regenerate Pigeon outputs
+        run: |
+          dart run pigeon --input pigeon/universal_ble.dart
+          dart format lib/src/universal_ble.g.dart
+
+      - name: Fail if generated code is out of date
+        run: git diff --exit-code
+
+  pana:
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
 

CHANGELOG.md

@@ -1,6 +1,6 @@
 ## 3.1.1
 * Bump `bluez` to `^0.9.0`.
-* Bump the `pigeon` dev dependency to `^29.0.0`.
+* Regenerate the platform channels with Pigeon `^29.0.0` (up from 26.3.4). The generated Kotlin and Swift channels are now coroutine/`async` based, so the Android module depends on `kotlinx-coroutines-android` and the native central/peripheral plugins were adapted to the new interfaces. No change to the public Dart API.
 
 ## 3.1.0
 * `BleDevice.services` is now normalised to full 128-bit lower-case UUIDs on every platform, matching the keys of `BleDevice.serviceData`. Apple was the outlier: it reported 16-bit advertised service UUIDs in their short form (`180D`), so the same field had a different shape per platform and stored keys or comparisons did not transfer between them. Compare against, or store, the 128-bit form; short (`180D`) and `0x`-prefixed forms are still accepted as *input*. Entries that are not valid UUIDs are kept verbatim rather than dropped.

android/build.gradle

@@ -47,7 +47,11 @@ android {
     }
 
     dependencies {
+        // Required by the Pigeon-generated code (Dispatchers.Main) and the suspend
+        // bridges in the plugin implementation.
+        implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-android:1.8.1'
         testImplementation 'org.jetbrains.kotlin:kotlin-test'
+        testImplementation 'org.jetbrains.kotlinx:kotlinx-coroutines-test:1.8.1'
         testImplementation 'org.mockito:mockito-core:5.12.0'
     }