bug: fixed rotation on return image on iOS

@@ -85,12 +85,8 @@ class _BarcodeScannerReturningImageState
                         child: Row(
                           mainAxisAlignment: MainAxisAlignment.spaceEvenly,
                           children: [
-                            ColoredBox(
-                              color: arguments != null && !arguments!.hasTorch
-                                  ? Colors.red
-                                  : Colors.white,
-                              child: IconButton(
-                                // color: ,
+                            IconButton(
+                              color: Colors.white,
                               icon: ValueListenableBuilder(
                                 valueListenable: controller.torchState,
                                 builder: (context, state, child) {
@@ -117,7 +113,6 @@ class _BarcodeScannerReturningImageState
                               iconSize: 32.0,
                               onPressed: () => controller.toggleTorch(),
                             ),
-                            ),
                             IconButton(
                               color: Colors.white,
                               icon: isStarted

@@ -230,16 +230,16 @@ public class MobileScanner: NSObject, AVCaptureVideoDataOutputSampleBufferDelega
         }
     }
 
-    /// Convert image buffer to jpeg
-    private func ciImageToJpeg(ciImage: CIImage) -> Data {
-
-        // let ciImage = CIImage(cvPixelBuffer: latestBuffer)
-        let context:CIContext = CIContext.init(options: nil)
-        let cgImage:CGImage = context.createCGImage(ciImage, from: ciImage.extent)!
-        let uiImage:UIImage = UIImage(cgImage: cgImage, scale: 1, orientation: UIImage.Orientation.up)
-
-        return uiImage.jpegData(compressionQuality: 0.8)!;
-    }
+//    /// Convert image buffer to jpeg
+//    private func ciImageToJpeg(ciImage: CIImage) -> Data {
+//
+//        // let ciImage = CIImage(cvPixelBuffer: latestBuffer)
+//        let context:CIContext = CIContext.init(options: nil)
+//        let cgImage:CGImage = context.createCGImage(ciImage, from: ciImage.extent)!
+//        let uiImage:UIImage = UIImage(cgImage: cgImage, scale: 1, orientation: UIImage.Orientation.up)
+//
+//        return uiImage.jpegData(compressionQuality: 0.8)!;
+//    }
 
     /// Rotates images accordingly
     func imageOrientation(

@@ -21,7 +21,7 @@ extension CVBuffer {
     var image: UIImage {
         let ciImage = CIImage(cvPixelBuffer: self)
         let cgImage = CIContext().createCGImage(ciImage, from: ciImage.extent)
-        return UIImage(cgImage: cgImage!)
+        return UIImage(cgImage: cgImage!, scale: 1.0, orientation: UIImage.Orientation.left)
     }
     
     var image1: UIImage {

@@ -52,24 +52,30 @@ class _MobileScannerState extends State<MobileScanner>
     if (!controller.isStarting) controller.start();
   }
 
-  AppLifecycleState? _lastState;
+  bool resumeFromBackground = false;
 
   @override
   void didChangeAppLifecycleState(AppLifecycleState state) {
+
+    // App state changed before it is initialized.
+    if (controller.isStarting) {
+      return;
+    }
+
     switch (state) {
       case AppLifecycleState.resumed:
-        if (!controller.isStarting &&
-            widget.autoResume &&
-            _lastState != AppLifecycleState.inactive) controller.start();
+        resumeFromBackground = false;
+        controller.start();
         break;
       case AppLifecycleState.paused:
-      case AppLifecycleState.detached:
-        controller.stop();
+        resumeFromBackground = true;
+        break;
+      case AppLifecycleState.inactive:
+        if (!resumeFromBackground) controller.stop();
         break;
       default:
         break;
     }
-    _lastState = state;
   }
 
   @override

@@ -202,7 +202,11 @@ class MobileScannerController {
 
   /// Stops the camera, but does not dispose this controller.
   Future<void> stop() async {
+    try {
       await _methodChannel.invokeMethod('stop');
+    } catch (e) {
+      debugPrint('$e');
+    }
   }
 
   /// Switches the torch on or off.