如何在Swift,iOS中使用xib文件初始化UIView类

class MyClass: UIView {

    class func instanceFromNib() -> UIView {
        return UINib(nibName: "nib file name",bundle: nil).instantiateWithowner(nil,options: nil)[0] as UIView
    }


}

初始化视图并使用它如下

var view = MyClass.instanceFromNib()
    self.view.addSubview(view)

要么

var view = MyClass.instanceFromNib
    self.view.addSubview(view())

UDATE Swift 3.x

class func instanceFromNib() -> UIView {
    return UINib(nibName: "nib file name",bundle: nil).instantiate(withowner: nil,options: nil)[0] as! UIView
}