Screenshot++ 2.1 is about to enter beta testing and includes support for Peek and Pop and Home Screen Quick Actions for iPhone 6s and iPhone 6s Plus.
This is the first app I've updated to take advantage of these new features and I think they're awesome. Peeking is fast and fluid and a definite time saver for users.
Both of these new 6s features are relatively easy to implement if you've been using NSUserActivity and either table or collection views in your app. For a guide on implementing Peek and Pop, check out Apple's UIViewControllerPreviewing API sample code. For Home Screen Quick Actions, I used 3D-touch on Github to get started.
For Peeking into a UICollectionViewCell, set the sourceRect property on UIViewControllerPreviewing to that of the selected cell (I assume this is the same for UITableViewCell but I haven't tried Peek with a tableView yet.) Something like this:
UICollectionView *cv = self.collectionView; UICollectionViewLayoutAttributes *attributes = [cv layoutAttributesForItemAtIndexPath:_openScreenshotCellIndexPath]; CGRect cellRect = attributes.frame; [previewingContext setSourceRect:cellRect]; _assetViewController.preferredContentSize = CGSizeMake(asset.pixelWidth, asset.pixelHeight);