title: OnTabChanged method in iOS?
body: <p><br>
  I'm quite new to iOS/Objective-C Developing and I'm writing my first serious iPhone/iPad App. The App that I am building is Tab-Based. There's a Settings-Tab which manages some Settings of a Picker used in the other view.<br>
  To my question: I want the picker to reload all components when the Tab changed or the settings in s selectorview changed. How would you solve this?</p>
  
  <p>Thanks,
  morymac</p>