chore(ios): working frontMirrored

Author: farfromrefug

packages/ui-cameraview/platforms/ios/src/NSCameraView.swift

@@ -207,7 +207,7 @@ public class NSCameraView: UIView, NextLevelVideoDelegate, NextLevelPhotoDelegat
     }
     public func toggleCamera() {
         self.nextLevel?.flipCaptureDevicePosition()
-        if let previewLayer = nextLevel.previewLayer {
+        if let previewLayer = self.nextLevel?.previewLayer {
             if self._frontMirrored {
                 previewLayer.connection?.automaticallyAdjustsVideoMirroring = true
             } else {
@@ -276,11 +276,11 @@ public class NSCameraView: UIView, NextLevelVideoDelegate, NextLevelPhotoDelegat
     private var _frontMirrored: Bool = true
     public var frontMirrored: Bool {
         get {
-            return self.frontMirrored
+            return self._frontMirrored
         }
         set {
             self._frontMirrored = newValue
-            if let previewLayer = nextLevel.previewLayer {
+            if let previewLayer = self.nextLevel?.previewLayer {
                 if self._frontMirrored {
                     previewLayer.connection?.automaticallyAdjustsVideoMirroring = true
                 } else {

src/ui-cameraview/index.ios.ts

@@ -1,5 +1,5 @@
 import { TakePictureOptions } from '.';
-import { CameraViewBase, ScaleType, autoFocusProperty, captureModeProperty, flashModeProperty, stretchProperty, zoomProperty } from './index.common';
+import { CameraViewBase, ScaleType, autoFocusProperty, captureModeProperty, flashModeProperty, frontMirroredProperty, stretchProperty, zoomProperty } from './index.common';
 import { File, Property, Utils } from '@nativescript/core';
 
 function getScaleType(scaleType: ScaleType) {
@@ -354,6 +354,10 @@ export class CameraView extends CameraViewBase {
         this.nativeViewProtected.videoZoomFactor = value;
     }
 
+    [frontMirroredProperty.setNative](value) {
+        this.nativeViewProtected.frontMirrored = value;
+    }
+
     getAllAvailablePictureSizes() {
         // TODO: implement
     }

src/ui-cameraview/typings/ios.d.ts

@@ -62,6 +62,8 @@ declare class NSCameraView extends UIView {
 
     zoomEnabled: boolean;
 
+    frontMirrored: boolean;
+
     capturePhoto(options: string): void;
 
     capturePhotoFromVideo(): void;