How do I call the iOS photo editing extension?

Question

Say I'm writing a word processing application. Users can embed images using the app. Now, since the application is not a photo editor, naturally, it will delegate editing photos of embedded images to other applications.

The question is how to do this? How to call extensions for editing photos in the iOS application?

Theoretically, it should be as simple as transferring an image, invoking an extension, and then returning another image as an “edited” image. However, the SDK documentation does not seem to give any hint on how to do this.

Answer 1

It appears that the SDK document actually says that it does not provide the user interface as such:

When using the built-in editing controls, the image selection controller performs certain parameters. For still images, the collector provides square cropping as well as maximum pixel size. For movies, the selector provides maximum video length and resolution. If you want the user to edit full-size media or specify custom crop, you must provide your own editing interface.

: https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/CameraAndPhotoLib_TopicsForIOS/Articles/PickinganItemfromthePhotoLibrary.html

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