Setting background color for UIAlertController in Swift

Question

I am using the new UIAlertController to implement an options menu of sorts for my application. I am trying to get the background color of the UIAlertController to match the theme of the rest of my application. The theme for my application is pretty simple, and consists of white text with a blue/grey background color for the toolbar and navigation bar, shown below:

enter image description here

However, I am having some trouble trying to get my UIAlertController to conform to this theme. I made the the following two calls to set the text and background color:

uiAlertController.view.backgroundColor = UIColor(red: CGFloat(.17255), green: CGFloat(.24314), blue: CGFloat(.31373), alpha: CGFloat(1.0))
uiAlertController.view.tintColor = UIColor.whiteColor()

This changed the UIAlertController to look like below:

enter image description here

The text was changed from the default blue system color to white, but the background color is not correct. I also tried modifying the specifying opacity (uiAlertController.view.opaque = true) but this did not help either. How do I go about setting the background color so it matches my navigation bar and toolbar? Thanks

score 9 · Accepted Answer · answered Mar 31 '17 at 10:28

9

for Swift 3 Xcode 8.2.1

let subview = (alert.view.subviews.first?.subviews.first?.subviews.first!)! as UIView

                subview.backgroundColor = UIColor(red: (145/255.0), green: (200/255.0), blue: (0/255.0), alpha: 1.0)

                alert.view.tintColor = UIColor.black

answered Mar 31 '17 at 10:28

Shakeel Ahmed

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how to change text colour? – Sazzad Hissain Khan Mar 23 '18 at 17:51
alert.view.tintColor = UIColor.black if want some thing else tell me will tell – Shakeel Ahmed Apr 10 '18 at 10:55
@ShakeelAhmed how to change particular button font color? – Manikandan Selvanathan Apr 10 '18 at 12:54
@ShakeelAhmed How to change the divider color in action sheet alert controller – Manikandan Selvanathan Apr 10 '18 at 12:54
what about ActionSheet – Yaroslav Dukal Oct 04 '18 at 03:45
Well, this is worked for me on Xcode 10, iOS 12. But what this ```alert.view.subviews.first?.subviews.first?.subviews.first!``` mean exactly? – Zhou Haibo Oct 18 '19 at 10:10

score 3 · Answer 2 · answered Aug 19 '16 at 19:37

Setting background color for UIAlertController in Swift

All you have to do is this:

//Create your alert controller

...

// Setting background color

let backView = yourAlertController.view.subviews.last?.subviews.last
backView?.layer.cornerRadius = 10.0
backView?.backgroundColor = UIColor.yellowColor() 

self.presentViewController(yourAlertController, animated: true, completion: nil);

score 1 · Answer 3 · answered May 31 '15 at 18:52

I had this same issue. Turns out I needed to traverse the subview tree like so:

var subView = alertController.view.subviews.first as! UIView
var contentView = subView.subviews.first as! UIView
contentView.backgroundColor = UIColor(red: 233.0/255.0, green: 133.0/255.0, blue: 49.0/255.0, alpha: 1.0)

Setting background color for UIAlertController in Swift

3 Answers3

Setting background color for UIAlertController in Swift