MNM MNM - 6 months ago 111
Swift Question

change UIAlertcontroller background Color

Ok so I have this alert that I am using and I want the background of it to be black not grey like it is. I have managed to change the colour of the text for the title and the message but not the background colour. Well to the desired colour I want. I have changed it to green blue and white, but not black. When I try to change it to black it turns grey. Any suggestions will help and be appreciated. I tried this here How to change the background color of the UIAlertController? and that is how I got to where I am now.

Here is what I have going now:

func showAlert(title:String, message:String) {

//Set up for the title color
let attributedString = NSAttributedString(string: title, attributes: [
NSFontAttributeName : UIFont.systemFontOfSize(15), //your font here,
NSForegroundColorAttributeName : UIColor.whiteColor()
])
//Set up for the Message Color
let attributedString2 = NSAttributedString(string: message, attributes: [
NSFontAttributeName : UIFont.systemFontOfSize(15), //your font here,
NSForegroundColorAttributeName : UIColor.whiteColor()
])

let alert = UIAlertController(title: title,message: message, preferredStyle: .Alert)

alert.setValue(attributedString, forKey: "attributedTitle")
alert.setValue(attributedString2, forKey: "attributedMessage")
//alert.view.tintColor = UIColor.whiteColor()
let dismissAction = UIAlertAction(title: "Dismiss", style: .Destructive, handler: nil)
alert.addAction(dismissAction)
self.presentViewController(alert, animated: true, completion: nil)
//set the color of the Alert
let subview = alert.view.subviews.first! as UIView
let alertContentView = subview.subviews.first! as UIView
alertContentView.backgroundColor = UIColor.blackColor()
//alertContentView.backgroundColor = UIColor.greenColor()
//Changes is to a grey color :(
/*
alertContentView.backgroundColor = UIColor(
red: 0,
green: 0,
blue: 0,
alpha: 1.0)
//Also another Grey Color Not batman black
*/

//alertContentView.backgroundColor = UIColor.blueColor()
//turns into a purple



}

Answer

try this

let subview :UIView = alert.view.subviews.last! as UIView
   let alertContentView = subview.subviews.last! as UIView
   alertContentView.backgroundColor = UIColor.blackColor()