March 2014
Intermediate to advanced
672 pages
40h 11m
English
Content preview from The Core iOS Developer’s Cookbook, Fifth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Saving Images to the Photo Album
Save a snapped image (or any UIImage instance, actually) to the photo album by calling UIImageWriteToSavedPhotosAlbum(). This function takes four arguments. The first is the image to save. The second and third arguments specify a callback target and selector, typically your primary view controller and image:didFinishSavingWithError:contextInfo:. The fourth argument is an optional context pointer. Whatever selector you use, it must take three arguments: an image, an error, and a pointer to the passed context information.
Recipe 8-2 uses the UIImageWriteToSavedPhotosAlbum() function to demonstrate how to snap a new image, allow user edits, and then save the image to the photo album.
Recipe 8-2 Snapping Pictures ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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