iphone - iOS 8 Photos framework. Access photo metadata -


i'm looking @ replacing alassetslibrary photos framework in app. can retrieve photos, collections, , asset sources fine (even write them out), don't see anywhere access metadata of photos (the dictionaries such {exif}, {tiff}, {gps}, etc...). alassetslibrary has way. uiimagepickercontroller has way. photos must have way too.

i see phasset has location property gps dictionary, i'm looking access of metadata includes, faces, orientation, exposure, iso, , tons more.

currently apple @ beta 2. perhaps there more apis come?

update------------------------------------------------------------------

there no official way using photos apis. can read metadata after download image data. there couple of methods using either phimagemanager or phcontenteditinginput. phcontenteditinginput method required less code , doesn't require import imageio. i've wrapped in phasset category

if request content editing input, can full image ciimage, , ciimage has property titled properties dictionary containing image metadata.

sample swift code:

let options = phcontenteditinginputrequestoptions() options.networkaccessallowed = true //download asset metadata icloud if needed  asset.requestcontenteditinginputwithoptions(options) { (contenteditinginput: phcontenteditinginput?, _) -> void in     let fullimage = ciimage(contentsofurl: contenteditinginput!.fullsizeimageurl)      print(fullimage.properties) }

sample objective-c code: 

phcontenteditinginputrequestoptions *options = [[phcontenteditinginputrequestoptions alloc] init]; options.networkaccessallowed = yes; //download asset metadata icloud if needed  [asset requestcontenteditinginputwithoptions:options completionhandler:^(phcontenteditinginput *contenteditinginput, nsdictionary *info) {     ciimage *fullimage = [ciimage imagewithcontentsofurl:contenteditinginput.fullsizeimageurl];      nslog(@"%@", fullimage.properties.description); }];

you'll desired {exif}, {tiff}, {gps}, etc dictionaries.


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