Pinch to reveal animations have showed up in a number of apps.
Krzysztof Zablocki who has created some excellent source code examples including the previously mentioned NSNotification And KVO Objective-C Categories For Automatic Observer Removal and SFGestureRecognizers library for easier gesture recognizers in Cocos2D.
Now Krzysztof has created an example showing how to create a pinch to reveal animation using UIKit that was inspired by the Boeing app.
Here’s a video showing the example code in action:
You can read more about the code on Krzysztof’s site here and you can download the code on Github here.
You can find the Boeing app on iTunes here.
A nice interactive effect for showing related image content.
Related content:
– iOS Source Code Examples Category
– Custom iOS UI Controls Category
