Ios 如何使UIBarButton在禁用时不变灰？

我有一个

UIBarButton saveBarButton

将屏幕的图像保存到摄像机滚轮上。当用户按下

saveBarButton

时，图像被保存，并且

UIBarButton saveBarButton

更改为

UIImage doneIcon

1.2秒，以向用户指示图像已保存。当

saveBarButton

显示

doneIcon

时，我禁用

saveBarButton

。但是，当我这样做时，

saveBarButton

将变灰

我的问题是：当禁用时，如何阻止

UIBarButton

变灰

我的代码：

//create UIBarButton saveBarButton
override func viewDidLoad() {    
    let saveBarButton = UIBarButtonItem(image: UIImage(named: "saveIcon"), style: .Plain, target: self, action: "save:")
    saveBarButton.tintColor = colorGreyDark
}

//save function called when press saveBarButton
func save(sender: UIBarButtonItem) {
    //save image
    deselectShape()
    let window: UIWindow! = UIApplication.sharedApplication().keyWindow
    let windowImage = capture(window)
    UIImageWriteToSavedPhotosAlbum(windowImage
        , nil, nil, nil)

    //Change saveBarButton to indicate to user that image was saved 
    sender.image = UIImage(named: "doneIcon")
    sender.enabled = false //disable saveBarButton
    self.performSelector("canSaveAgain:", withObject: sender, afterDelay: 1.2)
}

//Change saveBarButton to original icon to indicate to user that can save another image
func canSaveAgain(sender: UIBarButtonItem){
    sender.image = UIImage(named: "saveIcon")
    sender.enabled = true //enable saveBarButton
}

---

其中一种方法是使用

customView

创建

UIBarButtonItem

，并使用

userInteractionEnabled

而不是

enabled

let saveBarButton = UIBarButtonItem(customView: saveButton)
saveBarButton.customView?.userInteractionEnabled = false

---

您是否尝试过

sender.tintColor=UIColor（红色：51/255，绿色：51/255，蓝色：51/255，alpha:1.0）

，将按钮设置为enabled=false？有趣的想法…我现在实际上已经更改了代码，所以我根本不需要执行此操作，但感谢您的帮助！我需要的时候会记住的