title: "viewWillAppear" not call in xcode 4.5 with iPhone 4.3 simulator
body: <p>"viewWillAppear" not call in xcode 4.5 with iphone 4.3 simulator, but if it runs in iPhone 5.0 or iPhone 6.0 simulator, this method will be called.</p>
  
  <p>why? and what can i do if i want to do something when the view of an controller will appear in ios 4.3?</p>