CustomFramework模块-保护级别错误

Question

我正在尝试创建一个具有全局扩展的框架，以使我的工作更简单。现在，我试图为操作编写闭包，并且有效。

public extension UIButton {



public func actionHandleBlock(action:(() -> Void)? = nil) {
    struct __ {
        static var action :(() -> Void)?
    }
    if action != nil {
        __.action = action
    } else {
        __.action?()
    }
}

@objc public func triggerActionHandleBlock() {
    self.actionHandleBlock()
}

public func addAction(forControlEvents control :UIControlEvents, ForAction action:@escaping () -> Void) {
    self.actionHandleBlock(action: action)
    self.addTarget(self, action: #selector(triggerActionHandleBlock), for: control)
}

}

但是在使用框架实现时，出现以下错误

  override func viewDidLoad() {
    super.viewDidLoad()

    let btn = UIButton()
    btn.addAction(forControlEvents : .touchUpInside,ForAction:{//'addAction' is inaccessible due to 'internal' protection level

    })



}