Save images to photos gallery in iOS with exif data using swift

Question

I have created a custom camera using AVFoundation, now after capturing images, I need to save them in the iPhone's gallery.

I tried saving images with UIImageWriteToSavedPhotosAlbum but found that this does not save EXIF information.

you can create directory with application name and you can save image in your application directory only. — Sagar Bhut, Aug 23 '18 at 13:45
for saving exif information see this : https://stackoverflow.com/questions/9006759/how-to-write-exif-metadata-to-an-image-not-the-camera-roll-just-a-uiimage-or-j?rq=1 — Shahzaib Qureshi, Aug 23 '18 at 14:38

score 0 · Answer 1 · answered Oct 18 '18 at 12:55

To Save EXIF information with an image refer below code.

    - (void)saveImageDataToPhotoAlbum:(NSData *)originalData  
{  
    NSDictionary *dataDic = [self getDataAndMetadata:originalData];  

    ALAssetsLibrary *assetsLib = [[ALAssetsLibrary alloc] init];  
    [assetsLib writeImageDataToSavedPhotosAlbum:dataDic[@"data"]  
                                       metadata:dataDic[@"metadata"]  
                                completionBlock:^(NSURL *url, NSError *e) {  
                                    [self addToMyAlbum:url];  
                                }];  
}  
- (NSDictionary *)getDataAndMetadata:(NSData *)originalData  
{  
    CGImageSourceRef cimage = CGImageSourceCreateWithData((CFDataRef)originalData, nil);  
    NSDictionary *metadata = (NSDictionary *)CGImageSourceCopyPropertiesAtIndex(cimage, 0, nil);  

    NSMutableDictionary *metadataAsMutable = [NSMutableDictionary dictionaryWithDictionary:metadata];  
    metadataAsMutable[(NSString *)kCGImagePropertyGPSDictionary] = self.myGpsDic;  

    NSMutableData *dataForMetadataRemoval = [NSMutableData data];  
    CGImageDestinationRef dest =  
    CGImageDestinationCreateWithData((CFMutableDataRef)dataForMetadataRemoval, CGImageSourceGetType(cimage), 1, nil);  
    CGImageDestinationAddImageFromSource(dest, cimage, 0, (CFDictionaryRef)metadataAsMutable);  
    CGImageDestinationFinalize(dest);  
    CFRelease(dest);  
    [metadata release];  
    CFRelease(cimage);  

    return @{ @"data" : (dataForMetadataRemoval), @"metadata" : metadataAsMutable};  
}  
 return metadataAsMutable;   
}

Save images to photos gallery in iOS with exif data using swift

1 Answers1