Ios 将映像添加到UIAlertController

这是我的警觉，效果很好。我想在警报中添加一个图像，当警报出现时，它会显示在文本的旁边，如果它有影响，我会在SpriteKit中的一个场景中

var alertController = UIAlertController(title: "How to Skate", message: "Tap the screen to perform a trick and jump over the obsticles (You can grind on rails) The game will end when you hit a highlighted red, orange or yellow obstacle. That's it! + Image", preferredStyle: UIAlertControllerStyle.Alert)     
alertController.addAction(UIAlertAction(title: "Cool!", style: UIAlertActionStyle.Cancel, handler: nil))
self.view?.window?.rootViewController?.presentViewController(alertController, animated: true, completion: nil)

---

您可以将

UIImageView

作为子视图添加到

UIAlertController

var imageView = UIImageView(frame: CGRectMake(220, 10, 40, 40))
imageView.image = yourImage
alert.view.addSubview(imageView)

这是您在

UIAlertController

中的操作方式：

let alertMessage = UIAlertController(title: "My Title", message: "My Message", preferredStyle: .Alert)

let image = UIImage(named: "myImage")
var action = UIAlertAction(title: "OK", style: .Default, handler: nil)
action.setValue(image, forKey: "image")
alertMessage .addAction(action)

self.presentViewController(alertMessage, animated: true, completion: nil)

你可以这样做

    let imageView = UIImageView(frame: CGRectMake(220, 10, 40, 40))
   // imageView.image = UIImage(named: "ic_no_data")
    let alertMessage = UIAlertController(title: "My Title", message: "", preferredStyle: .Alert)

    let image = UIImage(named: "Image")
    let action = UIAlertAction(title: "OK", style: .Default, handler: nil)
    action.setValue(image, forKey: "image")
    alertMessage .addAction(action)

    self.presentViewController(alertMessage, animated: true, completion: nil)
    alertMessage.view.addSubview(imageView)

---

Swift 3

如果您愿意使用私有API，可以使用私有

attributedMessage

属性将属性字符串设置为包含图像的消息：

资料来源：

let actionSheet=UIAlertController（标题：“title”，消息：nil，首选样式：。actionSheet）
让str=NSMutableAttributedString（字符串：“消息\n\n”，属性：[NSAttributedStringKey.font:UIFont.preferredFont（forTextStyle:.caption1），NSAttributedStringKey.foregroundColor:UIColor.gray]）
let attachment=NSTextAttachment（）
附件.image=-->yourImage SWIFT 4+
注意：-同样，这是一个私有API，因此可能会在任何版本中更改，恕不另行通知。小心使用

感谢向UIAlertController添加图像

请尝试下面的代码Swift 4+

添加alertView控制器

let alert=UIAlertController（标题：title，消息：msg，首选样式：UIAlertControllerStyle.alert）
让image=UIImage（名为“脚”）！
警报。添加图像（图像：图像）
addAction（UIAlertAction（标题：“确定”，样式：UIAlertActionStyle.default，处理程序：nil））
//显示警报
self.present（警报、动画：true、完成：nil）

添加扩展UIAlertController

func addImage（图像：UIImage）{

}

添加图像视图扩展

扩展UIImage{

let maxSize = CGSize(width: 240, height: 244)
let imgSize = image.size
var ratio:CGFloat!
if (imgSize.width > imgSize.height){
    ratio = maxSize.width / imgSize.width
}else {
    ratio = maxSize.height / imgSize.height
}
let scaleSize = CGSize(width: imgSize.width*ratio, height: imgSize.height*ratio)
var resizedImage = image.imageWithSize(scaleSize)

if (imgSize.height > imgSize.width) {
    let left = (maxSize.width - resizedImage.size.width) / 2
    resizedImage = resizedImage.withAlignmentRectInsets(UIEdgeInsetsMake(0, -left, 0, 0))
}

let imgAction = UIAlertAction(title: "", style: .default, handler: nil)
imgAction.isEnabled = false
imgAction.setValue(resizedImage.withRenderingMode(.alwaysOriginal), forKey: "image")

self.addAction(imgAction)

func imageWithSize(_ size:CGSize) -> UIImage {
    var scaledImageRect = CGRect.zero

    let aspectWidth:CGFloat = size.width / self.size.width
    let aspectHeight:CGFloat = size.height / self.size.height
    let aspectRatio:CGFloat = min(aspectWidth, aspectHeight)

    scaledImageRect.size.width = self.size.width * aspectRatio
    scaledImageRect.size.height = self.size.height * aspectRatio
    scaledImageRect.origin.x = (size.width - scaledImageRect.size.width) / 2.0
    scaledImageRect.origin.y = (size.height - scaledImageRect.size.height) / 2.0

    UIGraphicsBeginImageContextWithOptions(size, false, 0)

    self.draw(in: scaledImageRect)

    let scaledImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return scaledImage!
}

}
目前，在不使用私有api或其他黑客的情况下，使用UIAlertController确实没有一种正确的方法，因为根据文档，您不应该修改alert view controller的视图层次结构。因此，最好的解决方案是为此创建自定义视图。但是，如果您不关心一些额外的边界，那么在UITextField中使用属性化字符串可以：

alertController.addTextField { field in
    let attachment = NSTextAttachment()
    attachment.image = image
    attachment.bounds = CGRect(x: 0, y: 0, width: 226, height: 226)
    field.attributedPlaceholder = NSAttributedString(attachment: attachment)
    field.textAlignment = .center
    field.isEnabled = false
}

这些方法是不兼容的。它有效地将图像添加到按钮区域，并影响警报视图中其他按钮的大小。这种方法的可访问性也可能不兼容。苹果公司本应该能够做到这一点，但如果没有这一选项，从
UIView
生成的定制警报似乎是最好的方法，并且具有控制所有元素的能力。
let maxSize = CGSize(width: 240, height: 244)
let imgSize = image.size
var ratio:CGFloat!
if (imgSize.width > imgSize.height){
    ratio = maxSize.width / imgSize.width
}else {
    ratio = maxSize.height / imgSize.height
}
let scaleSize = CGSize(width: imgSize.width*ratio, height: imgSize.height*ratio)
var resizedImage = image.imageWithSize(scaleSize)

if (imgSize.height > imgSize.width) {
    let left = (maxSize.width - resizedImage.size.width) / 2
    resizedImage = resizedImage.withAlignmentRectInsets(UIEdgeInsetsMake(0, -left, 0, 0))
}

let imgAction = UIAlertAction(title: "", style: .default, handler: nil)
imgAction.isEnabled = false
imgAction.setValue(resizedImage.withRenderingMode(.alwaysOriginal), forKey: "image")

self.addAction(imgAction)

func imageWithSize(_ size:CGSize) -> UIImage {
    var scaledImageRect = CGRect.zero

    let aspectWidth:CGFloat = size.width / self.size.width
    let aspectHeight:CGFloat = size.height / self.size.height
    let aspectRatio:CGFloat = min(aspectWidth, aspectHeight)

    scaledImageRect.size.width = self.size.width * aspectRatio
    scaledImageRect.size.height = self.size.height * aspectRatio
    scaledImageRect.origin.x = (size.width - scaledImageRect.size.width) / 2.0
    scaledImageRect.origin.y = (size.height - scaledImageRect.size.height) / 2.0

    UIGraphicsBeginImageContextWithOptions(size, false, 0)

    self.draw(in: scaledImageRect)

    let scaledImage = UIGraphicsGetImageFromCurrentImageContext()
    UIGraphicsEndImageContext()

    return scaledImage!
}

alertController.addTextField { field in
    let attachment = NSTextAttachment()
    attachment.image = image
    attachment.bounds = CGRect(x: 0, y: 0, width: 226, height: 226)
    field.attributedPlaceholder = NSAttributedString(attachment: attachment)
    field.textAlignment = .center
    field.isEnabled = false
}