Open Radar

 
Summary:
Fetching the full-file contents of a photo on the device will yield different results depending on if you use the AssetsLibrary API or the PhotoKit API.

What’s different?
The end of the file. When using PhotoKit, photos are padded with a series of null bytes at the end: http://spolet.to/image/1B2A0q291I1A

Sample files: https://www.dropbox.com/sh/xceibtsl5yxcfya/AABzwMoNN8qSdS5dMUdNXaJHa?dl=0

Sample project: https://www.dropbox.com/sh/s3y52t2p3ptfuoa/AAD8sNz68u_086kkG7tdy9cga?dl=0

Steps to Reproduce:
* All steps completed using Xcode 6.0 (6A313).
* Ensure the device has recently taken photos in the camera roll.

1) Open the provided SPPhotoLibraryData.xcodeproj and set ‘usePhotoKit’ to NO.
2) Run the SPPhotoLibraryData application on the device. It will find the latest photo in the camera roll and write out the full file contents to the application bundle.
3) In Xcode, open Devices->Installed Apps. Download the SPPhotoLibraryData container. Browse to /AppData/Library/Caches/ and find the exported image.
4) Set the ‘usePhotoKit’ flag to YES.
5) Repeat steps (2) & (3).

Expected Results:
The exported images should have identical file contents.

Actual Results:
The exported images differ.

Version:
8.0 (12A365)

Notes:


Configuration:
iPhone 5S

Attachments:
'SPPhotoLibraryData.zip' was successfully uploaded.