         self.addSubview(alertView)
     }
     
-    func setBackgroundEffect(view:UIView, blurStyle:AUBackgroundOptions) {
+    private func setBackgroundEffect(view:UIView, blurStyle:AUBackgroundOptions) {
         switch blurStyle {
         case .Dark:
             view.layer.backgroundColor = UIColor.black.withAlphaComponent(0.8).cgColor

        }
    }
    
    func cancelCurrentAlertviewDrag(_ animated:Bool) {
        self.animator?.removeAllBehaviors()
        self.attachmentBehaviour = nil
        isDraggingAlertView = false

        self.innerView.addSubview(self.messageLabel)
    }
    
    private func configTitleLabel(title: String) {
        self.titleLabel.frame = CGRect(x: 0.0, y: 0.0, width: self.innerView.frame.size.width, height: 0)
        titleLabel.text = title
        titleLabel.backgroundColor = UIColor.clear
