如何更改 UIAlertController 的色调颜色？

Question

Can I change colors of the UIAlertController ? A standard color is a blue color. And it's much close to the standard iOS apps. If it's customizable? How can I change colors of this? For example a button color.

Thanks!

Answer 1

You could just change the tintColor of the underlying view, however, due to a known bug introduced in iOS 9 ( https://openradar.appspot.com/22209332 ), the tintColor is overridden by the application window's tintColor .

You can either:

1. Change the app tintColor in the AppDelegate.

    func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool { self.window.tintColor = UIColor.redColor() return true }

2. Reapply the color in the completion block.

    self.presentViewController(alert, animated: true, completion: {() -> Void in alert.view.tintColor = UIColor.redColor() })

Answer 2

In Swift, you could do something like this:

let alert = UIAlertController(title: "Alert", message: "This is an alert.", preferredStyle: .Alert)
alert.addAction(UIAlertAction(title: "OK", style: .Default, handler: nil))
alert.view.tintColor = UIColor.redColor()
self.presentViewController(alert, animated: true, completion: nil)

Answer 3

In Swift 4 and Xcode 9.2

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

alertView.addAction(UIAlertAction(title: "CONFIRM", style: .default, handler: { (alertAction) -> Void in
                //my logic
            }))

alertView.addAction(UIAlertAction(title: "CANCEL", style: .default, handler: nil))


alertView.view.tintColor = UIColor.init(red: 45.0/255.0, green: 187.0/255.0, blue: 135.0/255.0, alpha: 1.0)

present(alertView, animated: true, completion: nil)

Answer 4

只需更改基础视图的 tintColor 即可。

[alertController.view setTintColor:[UIColor yellowColor]];

Answer 5

在 UIAllertController 中添加一行：

alert.view.tintColor = UIColor.black

Answer 6

To change the tint color for all Alerts in Swift:

 extension UIAlertController{
    open override func viewDidLayoutSubviews() {
        super.viewDidLayoutSubviews()
       self.view.tintColor = //color
    }
 }