[camera] Restore compatibility with older Flutter (flutter#4885)

stuartmorgan-g · web-flow · commit aa7a47415052 · 2022-02-17T13:24:18.000-08:00
diff --git a/packages/camera/camera/CHANGELOG.md b/packages/camera/camera/CHANGELOG.md
@@ -1,3 +1,7 @@
+## 0.9.4+14
+
+* Restores compatibility with Flutter 2.5 and 2.8.
+
 ## 0.9.4+13
 
 * Updates iOS camera's photo capture delegate reference on a background queue to prevent potential race conditions, and some related internal code cleanup.
diff --git a/packages/camera/camera/lib/src/camera_controller.dart b/packages/camera/camera/lib/src/camera_controller.dart
@@ -29,6 +29,10 @@ Future<List<CameraDescription>> availableCameras() async {
   return CameraPlatform.instance.availableCameras();
 }
 
+// TODO(stuartmorgan): Remove this once the package requires 2.10, where the
+// dart:async `unawaited` accepts a nullable future.
+void _unawaited(Future<void>? future) {}
+
 /// The state of a [CameraController].
 class CameraValue {
   /// Creates a new camera controller state.
@@ -296,7 +300,7 @@ class CameraController extends ValueNotifier<CameraValue> {
         enableAudio: enableAudio,
       );
 
-      unawaited(CameraPlatform.instance
+      _unawaited(CameraPlatform.instance
           .onCameraInitialized(_cameraId)
           .first
           .then((CameraInitializedEvent event) {
@@ -810,7 +814,7 @@ class CameraController extends ValueNotifier<CameraValue> {
     if (_isDisposed) {
       return;
     }
-    unawaited(_deviceOrientationSubscription?.cancel());
+    _unawaited(_deviceOrientationSubscription?.cancel());
     _isDisposed = true;
     super.dispose();
     if (_initCalled != null) {
diff --git a/packages/camera/camera/pubspec.yaml b/packages/camera/camera/pubspec.yaml
@@ -4,7 +4,7 @@ description: A Flutter plugin for controlling the camera. Supports previewing
   Dart.
 repository: https://github.com/flutter/plugins/tree/main/packages/camera/camera
 issue_tracker: https://github.com/flutter/flutter/issues?q=is%3Aissue+is%3Aopen+label%3A%22p%3A+camera%22
-version: 0.9.4+13
+version: 0.9.4+14
 
 environment:
   sdk: ">=2.14.0 <3.0.0"
