An animation practise demo,See it on Dribbble

##Asset I used...

I used Swifticons in main UI for its subtle color and shape.

I also used BigMug's icon in tab bar,the designer is Catalin Fertu

##Why I Do This?

As a motion designer,I begin to learn some code.

When I saw the Lush App,I'm very interesting in its tabbar's design.The Square moved in tab bar and changed color,I like the wonderful effect!That's why I make this demo.

In this demo,I try to use CABasicAnimation/POP Animation/Animatewithduration to make effect better.

##Final Effect

This is the effect in Xcode

Sorry for my poor code skill.I'm keep learning,welcome for suggest.

P.S Special Thanks to AlienJunX,he is always supporting me.