设置<uitouch>？没有名为Generator的成员

Question

我发现很难解决这个错误，请谁能帮助我 xcode 7 beta 2

  

设置UITouch？没有名为Generator

的成员

      override func touchesCancelled(touches: Set<UITouch>?, withEvent event: UIEvent?) {
        for obj in touches {
            if let touch = obj as? UITouch {
                let view = self.touchToView[touch]

                self.handleControl(view, controlEvent: .TouchCancel)

                self.touchToView[touch] = nil
            }
        }

    }
}

enter image description here

Answer 1

您需要打开可选项 - 尝试

for obj in touches! {
   // code here
}