Barcode bug fix (#255)

* bug fixed

* logs and comments

* fix

ios/lib/ReactNativeCameraKit/CKCamera.m

@@ -68,7 +68,7 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
 #define CAMERA_OPTION_ON_READ_QR_CODE               @"onReadQRCode"
 #define TIMER_FOCUS_TIME_SECONDS            5
 
-@interface CKCamera () <AVCaptureFileOutputRecordingDelegate, AVCaptureMetadataOutputObjectsDelegate>
+@interface CKCamera () <AVCaptureMetadataOutputObjectsDelegate>
 
 
 @property (nonatomic, strong) AVCaptureVideoPreviewLayer *previewLayer;
@@ -121,7 +121,7 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
 - (void)dealloc
 {
     [self removeObservers];
-    //NSLog(@"dealloc");
+//    NSLog(@"dealloc");
 }
 
 -(PHFetchOptions *)fetchOptions {
@@ -140,9 +140,9 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
 - (void)removeReactSubview:(UIView *)subview
 {
     [subview removeFromSuperview];
+    [super removeReactSubview:subview];
 }
 
-
 - (void)removeFromSuperview
 {
     
@@ -156,7 +156,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
     
 }
 
-
 - (instancetype)initWithFrame:(CGRect)frame {
     self = [super initWithFrame:frame];
     
@@ -175,7 +174,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
         [self.layer addSublayer:self.previewLayer];
         self.previewLayer.videoGravity = AVLayerVideoGravityResizeAspectFill;
 #endif
-        
         UIView *focusView = [[UIView alloc] initWithFrame:CGRectZero];
         focusView.backgroundColor = [UIColor clearColor];
         focusView.layer.borderColor = [UIColor yellowColor].CGColor;
@@ -194,7 +192,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
     return self;
 }
 
-
 -(void)setCameraOptions:(NSDictionary *)cameraOptions {
     _cameraOptions = cameraOptions;
     
@@ -246,7 +243,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
     //    }
 }
 
-
 -(void)setupCaptionSession {
     // Setup the capture session.
     // In general it is not safe to mutate an AVCaptureSession or any of its inputs, outputs, or connections from multiple threads at the same time.
@@ -298,17 +294,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
             self.setupResult = CKSetupResultSessionConfigurationFailed;
         }
         
-        [self.session commitConfiguration];
-        
-        [self setOnReadCode:self.onReadCode];
-    } );
-}
-
--(void)setOnReadCode:(RCTDirectEventBlock)onReadCode
-{
-    if (onReadCode) {
-        _onReadCode = onReadCode;
-
         AVCaptureMetadataOutput * output = [[AVCaptureMetadataOutput alloc] init];
         if ([self.session canAddOutput:output]) {
             self.metadataOutput = output;
@@ -316,7 +301,10 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
             [self.metadataOutput setMetadataObjectsDelegate:self queue:dispatch_get_main_queue()];
             [self.metadataOutput setMetadataObjectTypes:[self.metadataOutput availableMetadataObjectTypes]];
         }
-    }
+        
+        [self.session commitConfiguration];
+
+    } );
 }
 
 -(void)handleCameraPermission {
@@ -817,9 +805,6 @@ RCT_ENUM_CONVERTER(CKCameraZoomMode, (@{
 
 +(CGSize)cropImageToPreviewSize:(UIImage*)image size:(CGSize)previewSize {
     
-    CGRect ans = CGRectZero;
-    CGSize centerSize = CGSizeZero;
-    
     float imageToPreviewWidthScale = image.size.width/previewSize.width;
     float imageToPreviewHeightScale = image.size.width/previewSize.width;
     
@@ -1092,8 +1077,8 @@ didOutputMetadataObjects:(NSArray<__kindof AVMetadataObject *> *)metadataObjects
     for(AVMetadataObject *metadataObject in metadataObjects)
     {
         if ([metadataObject isKindOfClass:[AVMetadataMachineReadableCodeObject class]] && [self isSupportedBarCodeType:metadataObject.type]) {
-            AVMetadataMachineReadableCodeObject *code = (AVMetadataMachineReadableCodeObject*)[self.previewLayer transformedMetadataObjectForMetadataObject:metadataObject];
             
+            AVMetadataMachineReadableCodeObject *code = (AVMetadataMachineReadableCodeObject*)[self.previewLayer transformedMetadataObjectForMetadataObject:metadataObject];
             if (self.onReadCode && code.stringValue && ![code.stringValue isEqualToString:self.codeStringValue]) {
                 self.onReadCode(@{@"codeStringValue": code.stringValue});
                 [self stopAnimatingScanner];
@@ -1124,7 +1109,5 @@ const NSString *colorForFrame             = @"colorForFrame";
 const NSString *isNeedMultipleScanBarcode = @"isNeedMultipleScanBarcode";
 
 
-
-
 @end