目前的View Controller在Swift中不起作用

Question

I have got the below piece of code :

   let title = "You are not connected to DropBox"
    let message = "Please go back to the main page and try to log in again"
    let okText = "OK"

    let alert = UIAlertController(title: title, message: message, preferredStyle: UIAlertControllerStyle.Alert)
    let okayButton = UIAlertAction(title: okText, style: UIAlertActionStyle.Cancel, handler: nil)
    alert.addAction(okayButton)


    if dbRestClient == nil{
        print("please refresh me")
        presentViewController(alert, animated: true, completion: nil)
    }`

However my alert doesn't show up. I am calling this alert from a View Controller that actually shows on the page so its not the case where my VC is working behind the scene. Please let me know what I am doing wrong here.

Answer 1

Use self.presentViewController(alert, animated: true, completion: nil) instead.

Should work after adding self.