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To add a child view controller(VC) to a parent VC [ self addChildViewController : tradeVC ]; [ tradeVC   didMoveToParentViewController : self ]; [ tradeVC   release ]; // and then add as a subview [ self . view addSubview :  tradeVC . view ]; while removing: [ self . view removeFromSuperview ]; // and then remove from the parent VC [ self removeFromParentViewController ];