title: Data transfer between child tabs in a Tab bar controller
body: <p>My Tab bar controller has 4 tabs, I have 6 textfields in VC1 and want to use the data entered to display labels in VC2, VC3 &amp; VC4. I have read about adding data to TabBarController subclass and using it in the rest of VC's but stuck on implementation. I'm an absolute beginner and any code or links to the implementation of the code will be great.</p>