Fix selecting videos from library in iOS 13

Summary:
In iOS 13, Apple made a change that results in video URLs returned by UIImagePickerController becoming invalidated as soon as the info object from the delegate callback is released. This commit works around this issue by retaining these info objects by default and giving the application a way to release them once it is done processing the video.

See also https://stackoverflow.com/questions/57798968/didfinishpickingmediawithinfo-returns-different-url-in-ios-13

Reviewed By: olegbl, mmmulani

Differential Revision: D17845889

fbshipit-source-id: 12d0e496508dafa2581ef12730f7537ef98c60e2

Author: fatalsun

Libraries/CameraRoll/RCTImagePickerManager.mm

@@ -37,6 +37,7 @@ @implementation RCTImagePickerManager
   NSMutableArray<UIImagePickerController *> *_pickers;
   NSMutableArray<RCTResponseSenderBlock> *_pickerCallbacks;
   NSMutableArray<RCTResponseSenderBlock> *_pickerCancelCallbacks;
+  NSMutableDictionary<NSString *, NSDictionary<NSString *, id> *> *_pendingVideoInfo;
 }
 
 RCT_EXPORT_MODULE(ImagePickerIOS);
@@ -133,6 +134,24 @@ - (dispatch_queue_t)methodQueue
         cancelCallback:cancelCallback];
 }
 
+// In iOS 13, the URLs provided when selecting videos from the library are only valid while the
+// info object provided by the delegate is retained.
+// This method provides a way to clear out all retained pending info objects.
+RCT_EXPORT_METHOD(clearAllPendingVideos)
+{
+  [_pendingVideoInfo removeAllObjects];
+  _pendingVideoInfo = [NSMutableDictionary new];
+}
+
+// In iOS 13, the URLs provided when selecting videos from the library are only valid while the
+// info object provided by the delegate is retained.
+// This method provides a way to release the info object for a particular file url when the application
+// is done with it, for example after the video has been uploaded or copied locally.
+RCT_EXPORT_METHOD(removePendingVideo:(NSString *)url)
+{
+  [_pendingVideoInfo removeObjectForKey:url];
+}
+
 - (void)imagePickerController:(UIImagePickerController *)picker
 didFinishPickingMediaWithInfo:(NSDictionary<NSString *, id> *)info
 {
@@ -148,7 +167,15 @@ - (void)imagePickerController:(UIImagePickerController *)picker
     width = @(image.size.width);
   }
   if (imageURL) {
-    [self _dismissPicker:picker args:@[imageURL.absoluteString, RCTNullIfNil(height), RCTNullIfNil(width)]];
+    NSString *imageURLString = imageURL.absoluteString;
+    // In iOS 13, video URLs are only valid while info dictionary is retained
+    if (@available(iOS 13.0, *)) {
+      if (isMovie) {
+        _pendingVideoInfo[imageURLString] = info;
+      }
+    }
+
+    [self _dismissPicker:picker args:@[imageURLString, RCTNullIfNil(height), RCTNullIfNil(width)]];
     return;
   }
 
@@ -176,6 +203,7 @@ - (void)_presentPicker:(UIImagePickerController *)imagePicker
     _pickers = [NSMutableArray new];
     _pickerCallbacks = [NSMutableArray new];
     _pickerCancelCallbacks = [NSMutableArray new];
+    _pendingVideoInfo = [NSMutableDictionary new];
   }
 
   [_pickers addObject:imagePicker];

Libraries/FBReactNativeSpec/FBReactNativeSpec/FBReactNativeSpec-generated.mm

@@ -1238,6 +1238,14 @@ + (RCTManagedPointer *)JS_NativeImagePickerIOS_SpecOpenSelectDialogConfig:(id)js
       return static_cast<ObjCTurboModule&>(turboModule).invokeObjCMethod(rt, VoidKind, "openSelectDialog", @selector(openSelectDialog:successCallback:cancelCallback:), args, count);
     }
 
+    static facebook::jsi::Value __hostFunction_NativeImagePickerIOSSpecJSI_clearAllPendingVideos(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+      return static_cast<ObjCTurboModule&>(turboModule).invokeObjCMethod(rt, VoidKind, "clearAllPendingVideos", @selector(clearAllPendingVideos), args, count);
+    }
+
+    static facebook::jsi::Value __hostFunction_NativeImagePickerIOSSpecJSI_removePendingVideo(facebook::jsi::Runtime& rt, TurboModule &turboModule, const facebook::jsi::Value* args, size_t count) {
+      return static_cast<ObjCTurboModule&>(turboModule).invokeObjCMethod(rt, VoidKind, "removePendingVideo", @selector(removePendingVideo:), args, count);
+    }
+
 
     NativeImagePickerIOSSpecJSI::NativeImagePickerIOSSpecJSI(id<RCTTurboModule> instance, std::shared_ptr<CallInvoker> jsInvoker)
       : ObjCTurboModule("ImagePickerIOS", instance, jsInvoker) {
@@ -1256,6 +1264,12 @@ + (RCTManagedPointer *)JS_NativeImagePickerIOS_SpecOpenSelectDialogConfig:(id)js
 
         setMethodArgConversionSelector(@"openSelectDialog", 0, @"JS_NativeImagePickerIOS_SpecOpenSelectDialogConfig:");
 
+        methodMap_["clearAllPendingVideos"] = MethodMetadata {0, __hostFunction_NativeImagePickerIOSSpecJSI_clearAllPendingVideos};
+        
+        
+        methodMap_["removePendingVideo"] = MethodMetadata {1, __hostFunction_NativeImagePickerIOSSpecJSI_removePendingVideo};
+        
+        
 
     }
 

Libraries/FBReactNativeSpec/FBReactNativeSpec/FBReactNativeSpec.h

@@ -1218,6 +1218,8 @@ namespace JS {
 - (void)openSelectDialog:(JS::NativeImagePickerIOS::SpecOpenSelectDialogConfig &)config
          successCallback:(RCTResponseSenderBlock)successCallback
           cancelCallback:(RCTResponseSenderBlock)cancelCallback;
+- (void)clearAllPendingVideos;
+- (void)removePendingVideo:(NSString *)url;
 
 @end
 namespace facebook {

Libraries/Image/ImagePickerIOS.js

@@ -80,6 +80,26 @@ const ImagePickerIOS = {
       cancelCallback,
     );
   },
+  /**
+   * In iOS 13, the video URLs returned by the Image Picker are invalidated when
+   * the picker is dismissed, unless reference to it is held. This API allows
+   * the application to signal when it's finished with the video so that the
+   * reference can be cleaned up.
+   * It is safe to call this method for urlsthat aren't video URLs;
+   * it will be a no-op.
+   */
+  removePendingVideo: function(url: string): void {
+    invariant(NativeImagePickerIOS, 'ImagePickerIOS is not available');
+    NativeImagePickerIOS.removePendingVideo(url);
+  },
+  /**
+   * WARNING: In most cases, removePendingVideo should be used instead because
+   * clearAllPendingVideos could clear out pending videos made by other callers.
+   */
+  clearAllPendingVideos: function(): void {
+    invariant(NativeImagePickerIOS, 'ImagePickerIOS is not available');
+    NativeImagePickerIOS.clearAllPendingVideos();
+  },
 };
 
 module.exports = ImagePickerIOS;

Libraries/Image/NativeImagePickerIOS.js

@@ -33,6 +33,8 @@ export interface Spec extends TurboModule {
     successCallback: (imageURL: string, height: number, width: number) => void,
     cancelCallback: () => void,
   ) => void;
+  +clearAllPendingVideos: () => void;
+  +removePendingVideo: (url: string) => void;
 }
 
 export default (TurboModuleRegistry.get<Spec>('ImagePickerIOS'): ?Spec);