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IOS - can UISaveVideoAtPathToSavedPhotosAlbum return a saved video path?

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];


    //get the videoURL 
    NSString *tempFilePath = [videoURL path];


    if ( UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(tempFilePath))
    {
      // Copy it to the camera roll.
      UISaveVideoAtPathToSavedPhotosAlbum(tempFilePath, self, @selector(video:didFinishSavingWithError:contextInfo:), tempFilePath);
    } 
}

I am using UISaveVideoAtPathToSavedPhotosAlbum to save the recorded video. And I want to know the absolute path in the album where I saved the recorded video.

How can I get the saved path? UISaveVideoAtPathToSavedPhotosAlbum does not return any.

and in the callback function function: didFinishSavingWithError: contextInfo: path information not yet specified.

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2 answers

As far as I know .. You cannot get the path to the video saved in the photo album. If you want the list of files to be played from your application. You can have all the videos in your application.

, didFinishPickingMedia . .

   NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *documentsDirectory = [paths objectAtIndex:0]; // Get documents folder
    NSString *dataPath = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"%d", 1]];
    NSString *fileName = [NSString stringWithFormat:@"%@ :%@.%@", itsIncidentType, [dateFormatter stringFromDate:incidentDate], @"mp4"];
    [dateFormatter release];
    if (![[NSFileManager defaultManager] fileExistsAtPath:dataPath])
        [[NSFileManager defaultManager] createDirectoryAtPath:dataPath withIntermediateDirectories:NO attributes:nil error:&error]; //Create folder
    NSURL *videoURL = [imageInfo objectForKey:UIImagePickerControllerMediaURL];
    NSData *webData = [NSData dataWithContentsOfURL:videoURL];
    self.itsVideoName = fileName;
    [webData writeToFile:[NSString stringWithFormat:@"%@/%@",dataPath,fileName] atomically:TRUE];

, .

+2

, .

PHAsset

PHAsset+Picking.h

#import <Photos/Photos.h>

@interface PHAsset (Picking)

+ (PHAsset *)retrievePHAssetWithLocalIdentifier:(NSString *)identifier;

+ (void)saveVideoFromCameraToPhotoAlbumWithInfo:(NSDictionary *)info
                                     completion:(void(^)(PHAsset * _Nullable asset))completion;

@end

PHAsset+Picking.m

@implementation PHAsset (Picking)

+ (PHAsset *)retrievePHAssetWithLocalIdentifier:(NSString *)identifier {
    PHAsset *asset = nil;
    if (identifier) {
        PHFetchResult *result = [PHAsset fetchAssetsWithLocalIdentifiers:@[identifier] options:nil];
        asset = result.firstObject;
    }

    return asset;
}

+ (void)saveVideoFromCameraToPhotoAlbumWithInfo:(NSDictionary *)info 
                                     completion:(void(^)(PHAsset * _Nullable asset))completion
{
    // get URL to file from picking media info
    NSURL *url = info[UIImagePickerControllerMediaURL];
    __block PHAssetChangeRequest *changeRequest = nil;
    __block PHObjectPlaceholder *assetPlaceholder = nil;
    // save video file to library
    [[PHPhotoLibrary sharedPhotoLibrary] performChanges:^{
        changeRequest = [PHAssetChangeRequest creationRequestForAssetFromVideoAtFileURL:url];
        assetPlaceholder = changeRequest.placeholderForCreatedAsset;
    } completionHandler:^(BOOL success, NSError *error) {
        if (success) {
            // get saved object as PHAsset 
            PHAsset *asset = [PHAsset retrievePHAssetWithLocalIdentifier:assetPlaceholder.localIdentifier];
            completion(asset);
        } else {
            completion(nil);
        }
    }];
}

@end

saveVideoFromCameraToPhotoAlbumWithInfo

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
    NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
    if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) {
        Weakify(self);
        void (^processAsset)(PHAsset *, NSDictionary *) = ^void(PHAsset *asset, NSDictionary *mediaInfo) {
            [PHImageManager.defaultManager requestAVAssetForVideo:asset
                                                      options:nil
                                                resultHandler:^(AVAsset *asset,
                                                                AVAudioMix *audioMix,
                                                                NSDictionary *assetInfo)
             {
                 Strongify(self);
                 if ([asset respondsToSelector:@selector(URL)]) {

                     // URL to video file here
                     NSURL *videoURL = [asset performSelector:@selector(URL)];
                 } else {
                     // asset hasn't property URL
                     // it is can be AVComposition (e.g. user chose slo-mo video)
                 }
             }];
        };

        if (UIImagePickerControllerSourceTypeCamera == picker.sourceType) {
            // save video from camera
            [PHAsset saveVideoFromCameraToPhotoAlbumWithInfo:info completion:^(PHAsset *asset) {
                // processing saved asset
                processAsset(asset, info);
            }];
        } else {
            // processing existing asset from library
            processAsset(info[UIImagePickerControllerPHAsset], info);
        }
    } else {
        // image processing
    }
}
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