如何禁用UIButton并发送UIAlertView消息

时间:2016-02-24 06:03:35

标签: ios arrays swift uibutton uialertview

我正在尝试禁用菜单按钮,数组显示为空。

这是我的代码。

@IBAction func likedmenubuttontouched(sender: AnyObject) {

    if Globals.likedArray.isEmpty {
        likedMenuButton.userInteractionEnabled = false
        let ac = UIAlertController(title: "No liked quotes yet", message: "No liked quotes have been chosen, go explore!", preferredStyle: .Alert)
        ac.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
        presentViewController(ac, animated: true, completion: nil)
        return
    } else {
        likedMenuButton.userInteractionEnabled = true
    }
}

在ViewDidLoad()

likedMenuButton.userInteractionEnabled = false

我已设法禁用该按钮,但我想发送一条消息,提醒用户该按钮被禁用的原因,否则,它有点令人困惑。

我将如何做到这一点?

感谢。

1 个答案:

答案 0 :(得分:0)

默认情况下,用户交互为真,您无需将其设为真

@IBAction func likedmenubuttontouched(sender: AnyObject) {


        if Globals.likedArray.isEmpty {

            let ac = UIAlertController(title: "No liked quotes yet", message: "No liked quotes have been chosen, go explore!", preferredStyle: .Alert)
            ac.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
            presentViewController(ac, animated: true, completion: nil)
        } else {
            //segue to the other view
        }
    }
  

同时检查数组计数,这就是您执行错误条件的原因