feat(ios): add new method isRecording (#1969)

* feat: isRecording() to RNCamera which returns boolean

* docs: update RNCamera and typings

Author: svipas

docs/RNCamera.md

@@ -526,6 +526,10 @@ The promise will be fulfilled with an object with some of the following properti
 
  Android only. Returns a promise. The promise will be fulfilled with an object with an array containing strings with all camera aspect ratios supported by the device.
 
+ #### `iOS` `isRecording(): Promise<boolean>`
+
+ iOS only. Returns a promise. The promise will be fulfilled with a boolean indicating if currently recording is started or stopped.
+
 ## Subviews
 This component supports subviews, so if you wish to use the camera view as a background or if you want to layout buttons/images/etc. inside the camera then you can do that.
 

ios/RN/RNCamera.h

@@ -73,6 +73,7 @@
 - (void)onFacesDetected:(NSDictionary *)event;
 - (void)onPictureSaved:(NSDictionary *)event;
 - (void)onText:(NSDictionary *)event;
+- (bool)isRecording;
 
 @end
 

ios/RN/RNCamera.m

@@ -1158,4 +1158,8 @@ - (void)stopTextRecognition
     self.videoDataOutput = nil;
 }
 
+- (bool)isRecording {
+    return self.movieFileOutput.isRecording;
+}
+
 @end

ios/RN/RNCameraManager.m

@@ -387,5 +387,21 @@ + (NSDictionary *)faceDetectorConstants
     resolve([[[self class] pictureSizes] allKeys]);
 }
 
-@end
+RCT_EXPORT_METHOD(isRecording:(nonnull NSNumber *)reactTag
+                 resolver:(RCTPromiseResolveBlock)resolve
+                 rejecter:(RCTPromiseRejectBlock)reject) {
+    #if TARGET_IPHONE_SIMULATOR
+        reject(@"E_IS_RECORDING_FAILED", @"Video recording is not supported on a simulator.", nil);
+        return;
+    #endif
+        [self.bridge.uiManager addUIBlock:^(__unused RCTUIManager *uiManager, NSDictionary<NSNumber *, RNCamera *> *viewRegistry) {
+            RNCamera *view = viewRegistry[reactTag];
+            if (![view isKindOfClass:[RNCamera class]]) {
+                RCTLogError(@"Invalid view returned from registry, expecting RNCamera, got: %@", view);
+            } else {
+                resolve(@([view isRecording]));
+            }
+        }];
+}
 
+@end

src/RNCamera.js

@@ -317,6 +317,10 @@ export default class Camera extends React.Component<PropsType, StateType> {
     CameraManager.pausePreview(this._cameraHandle);
   }
 
+  isRecording() {
+    return CameraManager.isRecording(this._cameraHandle);
+  }
+
   resumePreview() {
     CameraManager.resumePreview(this._cameraHandle);
   }

types/index.d.ts

@@ -13,7 +13,7 @@
 import { Component, ReactNode } from 'react';
 import { ViewProperties } from "react-native";
 
-type Orientation = Readonly<{ auto:any, landscapeLeft:any ,landscapeRight:any, portrait:any, portraitUpsideDown:any}>
+type Orientation = Readonly<{ auto: any, landscapeLeft: any, landscapeRight: any, portrait: any, portraitUpsideDown: any }>
 type AutoFocus = Readonly<{ on: any, off: any }>;
 type FlashMode = Readonly<{ on: any, off: any, torch: any, auto: any }>;
 type CameraType = Readonly<{ front: any, back: any }>;
@@ -73,7 +73,7 @@ export interface RNCameraProps {
     pendingAuthorizationView?: JSX.Element;
     useCamera2Api?: boolean;
     whiteBalance?: keyof WhiteBalance
-    
+
     onCameraReady?(): void;
     onMountError?(error: {
         message: string
@@ -232,6 +232,9 @@ export class RNCamera extends Component<RNCameraProps & ViewProperties> {
 
     /** Android only */
     getSupportedRatiosAsync(): Promise<string[]>;
+
+    /** iOS only */
+    isRecording(): Promise<boolean>;
 }
 
 interface DetectionOptions {