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Component Allowing You To Easily Display Images With A Parallax Effect In A UICollectionView

I’ve mentioned a number of components that make use of parallax effects most recently this control for creating sliding menus with background images in parallax, and this component allowing you to add a parallax effect to a UITableView.

Here’s an open source component submitted by Mayur Joshi that allows you to easily create a scrolling view with images displayed with a parallax effect called MJParallaxCollectionView.

Open Source iOS Component That Makes It Easier To Get Permission To Use Photos And Contacts

One major issue that arises with iOS apps that use photos or contacts is that the user needs to give permission, and if the user declines to give access they will later need to go into settings and adjust the permissions.

Here’s a library from Cluster called ClusterPrePermissions that aims to help solve this issue by displaying a prompt asking the user if they want to give permission before actually giving permission.

Open Source Library For Creating Great Looking Animated And Interactive Line Graphs

I’ve mentioned a number of graphing and charting libraries such as the excellent MagicPie for creating animated pie charts.

Here’s a library submitted by Boris Emorine for producing great looking line graphs that has number of nice unique features.

These features include:

- Adjustable animations on display of the graph
- Line smoothing using bezier curves for smoothed line graphs
- Touch reporting and indication on the graph showing the closest point to the users touch
- Custom alpha values so graphs can be made semi-transparent if desired
- Easy snapshotting of the graphs

Extensive Functional Programming Inspired Categories For NSArray, NSSet, And NSDictionary

Early this year I mentioned the release of an Xcode 5 compatible version of the excellent CodePilot was released by Macoscope.

Here is an extensive functional programming inspired library released from Macoscope providing categories for NSArray, NSSet, and NSDictionary providing a clean syntax for many common operations making extensive use of blocks.

These utilities include functionality for searching, sorting, counting, joining, and more.

Open Source iOS Library Providing A Number Of Nice View Transitions

I’ve mentioned a number of resources related to the iOS 7 transitioning api such as these tutorials on creating transitions, and making your transitions interactive, and this library of transitions.

Here’s an open source library from shu223 providing even more view transitions using iOS 7′s UIViewControllerAnimatedTransitioning protocol called Animated Transitions Gallery.

There are over 40 transitions included within the library including zoom/fade style transitions, line removal transitions, falling brick transitions, and 3D transitions.