创建视图控制器的新子类:

Create new subclass of view controller:

class SendFeedbackViewController: UIViewController {
    @IBOutlet weak var sendFeedbackButton: UIButton!

    @IBAction func sendFeedback() {
        /* do whatever you need */
    }
}

然后从这个新的视图控制器继承所有的视图控制器:

Then subclass all your view controllers from this new view controller:

class YourViewController: SendFeedbackViewController {
    /* your entire logic */
}

在情节提要中设置类类型:

In storyboard set class type:

现在您可以连接您的发送反馈按钮出口和操作:

Now you can connect your send feedback button outlet and action: