fix(ios): autofocus fix

Author: farfromrefug

src/ui-cameraview/index.common.ts

@@ -22,10 +22,10 @@ export const enablePinchZoomProperty = new Property<CameraViewBase, boolean>({
     defaultValue: false,
     valueConverter: booleanConverter
 });
-export const autoFocusProperty = new Property<CameraViewBase, boolean>({
+export const autoFocusProperty = new Property<CameraViewBase, boolean | number>({
     name: 'autoFocus',
     defaultValue: false,
-    valueConverter: booleanConverter
+    valueConverter: (v) => (v === 'false' || v === 'true' ? booleanConverter(v) : parseInt(v, 10))
 });
 export const saveToGalleryProperty = new Property<CameraViewBase, boolean>({
     name: 'saveToGallery',

src/ui-cameraview/index.ios.ts

@@ -222,7 +222,11 @@ export class CameraView extends CameraViewBase {
         }
     }
 
-    [autoFocusProperty.setNative](value: boolean) {
-        throw new Error('Method not implemented.');
+    [autoFocusProperty.setNative](value: boolean | number) {
+        if (typeof value === 'boolean') {
+            this.nativeViewProtected.focusMode = value ? AVCaptureFocusMode.ContinuousAutoFocus : AVCaptureFocusMode.Locked;
+        } else {
+            this.nativeViewProtected.focusMode = value;
+        }
     }
 }

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

@@ -21,6 +21,7 @@ declare class NSCameraView extends UIView {
     readonly canCaptureVideo: boolean;
 
     flashMode: number;
+    focusMode: number;
 
     nextLevel: NextLevel;