iOS：如何聆听照片和相册变化的变化

Question

Is there any way to listen to the change of ipad's photos and albums? Something like NSNotification . I used to use " ALAssetLibraryChangedNotification " but i found it not appropriate for listening photo changes.

Any help? Thanks in advance!

Answer 1

I don't think you can do this.

The best way to do it is to look at the assets in appDidFinishLaunching and then see the changes that you're interested in.

A few apps on the App Store do it this way.

Answer 2

You should use this in your appDelegate: registerChangeObserver: The entire process is mentioned here:

https://developer.apple.com/library/ios/documentation/Photos/Reference/PHPhotoLibrary_Class/#//apple_ref/occ/instm/PHPhotoLibrary/registerChangeObserver: