Floating drawer style navigation has become quite common since the release of iOS 7 and here’s an open source component for creating floating style drawer navigation that’s easy to use with a number of neat customization options called JVFloatingDrawer from Julian Villella.
Some of the features you can customize With JVFLoatingDrawer are the widths, background image, and animation physics. You can also create your own completely custom animator.
This animation from the readme shows JVFloatingDrawer in action and some of the custom animation properties:

You can find JVFloatingDrawer on Github here.
A nice component for implementing the floating drawer style navigation pattern.
Original article: Open Source iOS Component For Floating Drawer Style Navigation With Customizable Animations
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