Save all images in UICollectionView as one image

Question

I am creating picture masked app for iOS. In my app, I listed all modified pics in collection view as thumbnail(that cells are custom). And I want to save all items(that items are be custom cells in collectionView) in collectionView as 1 image . Is this possible? if it isn't is there a way to save like that?

Thank you

Have you tried anything? Can you show some relevant code? – Patrick Q Jun 16 '14 at 14:08 — Patrick Q, Jun 16 '14 at 14:08

score 1 · Accepted Answer · answered Jun 16 '14 at 13:44

1

If I understand your question correctly, you can achieve so by taking a screenshot programmatically. The update in iOS7 made it more efficient. The ways to do it is as following:

snapshotViewAfterScreenUpdates

resizableSnapshotViewFromRect:afterScreenUpdates:withCapInsets

drawViewHierarchyInRect:afterScreenUpdates

Then you can convert the returned UIView into a image and save it.

answered Jun 16 '14 at 13:44

Anton

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The image quality after the screenshot will be the same if i save it as a PNG? – rihekopo Jun 16 '14 at 15:59
It will be the same resolution as the screen is. – Anton Jun 16 '14 at 16:28
So this is how photo frame apps work? Just some images loaded into various views and printscreen? – rihekopo Jun 16 '14 at 16:31
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No I would not make such assumption. But for this question this should work. – Anton Jun 16 '14 at 16:33
Thank you for all answers. @TonyD; is it get screenshot of all screen or can we set border to screenshot rect? I guess this code might be useful "resizableSnapshotViewFromRect:afterScreenUpdates:withCapInsets". I will try... – Antiokhos Jun 16 '14 at 18:33
Very glad that I can help. – Anton Jun 17 '14 at 01:58

Save all images in UICollectionView as one image

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