初学swift，代码加载xib storyboard

－.加载xib

override init(nibName nibNameOrNil: String?,bundle nibBundleOrNil: NSBundle?){
   super.init(nibName: nibNameOrNil,bundle: nibBundleOrNil)
}
    
convenience init() {
   var nibNameOrNil = String?("ViewController")
   self.init(nibName: nibNameOrNil,bundle: nil)
}
    
required init(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

var jumpViewController: ViewController
            = UIStoryboard(name: "Main",bundle: nil).instantiateViewControllerWithIdentifier("Storyboard ID") as! ViewController
            self.navigationController?.pushViewController(jumpViewController,animated: true)

Storyboard ID 是storyboard绑定的ID viewController 是绑定的Class