fix: Camera not activating directly (#1125)

* fix: Camera not activating directly * Update ml_kit_scan_page.dart * Update ml_kit_scan_page.dart * Update ml_kit_scan_page.dart
openfoodfacts · Feb 13, 2022 · 4ef945a · 4ef945a
1 parent 4e62659
commit 4ef945a
Showing 1 changed file with 10 additions and 6 deletions.
diff --git a/packages/smooth_app/lib/pages/scan/ml_kit_scan_page.dart b/packages/smooth_app/lib/pages/scan/ml_kit_scan_page.dart
@@ -129,32 +129,36 @@ class MLKitScannerPageState extends State<MLKitScannerPage> {
     _controller?.setFocusMode(FocusMode.auto);
     _controller?.lockCaptureOrientation(DeviceOrientation.portraitUp);
 
-    _controller = _controller;
-
-    try {
-      await _controller!.initialize();
+    // If the controller is initialized update the UI.
+    _controller?.addListener(() {
       if (mounted) {
         setState(() {});
       }
       if (_controller!.value.hasError) {
+        // TODO(M123): Handle errors better
         debugPrint(_controller!.value.errorDescription);
       }
+    });
+
+    try {
+      await _controller?.initialize();
       _controller?.startImageStream(_processCameraImage);
     } on CameraException catch (e) {
       if (kDebugMode) {
         // TODO(M123): Show error message
         debugPrint(e.toString());
       }
     }
-
     if (mounted) {
       setState(() {});
     }
   }
 
   Future<void> _stopImageStream() async {
     stoppingCamera = true;
-    setState(() {});
+    if (mounted) {
+      setState(() {});
+    }
     await _controller?.dispose();
     _controller = null;
   }