ios 将图像添加到警报视图
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Add image to alert view
提问by Cherry_thia
I have an alert view that pops up when the user press the add button. How do i add an image to the alert view?
我有一个警报视图，当用户按下添加按钮时会弹出该视图。如何将图像添加到警报视图？
I added some code that i took reference from stack overflow. My save button is replaced with the image and the image appear to be in blue colour...
我添加了一些从堆栈溢出中引用的代码。我的保存按钮被图像替换，图像看起来是蓝色的......
Code for Alert View
警报视图代码
var alert = UIAlertController(title: "Spring Element \(springNumber)",
message: "Add spring properties",
preferredStyle: .Alert)
let saveAction = UIAlertAction(title: "Save",
style: .Default) { (action: UIAlertAction!) -> Void in
let textField1 = alert.textFields![0] as UITextField
self.txtField1.append(textField1.text)
self.tableView.reloadData()
let textField2 = alert.textFields![1] as UITextField
self.txtField2.append(textField2.text)
self.tableView.reloadData()
println(self.txtField1)
println(self.txtField2)
}
let cancelAction = UIAlertAction(title: "Cancel",
style: .Default) { (action: UIAlertAction!) -> Void in
}
//adding textfield1
alert.addTextFieldWithConfigurationHandler {
(textField1: UITextField!) -> Void in
textField1.placeholder = "Force"
}
//adding textfield2
alert.addTextFieldWithConfigurationHandler {
(textField2: UITextField!) -> Void in
textField2.placeholder = "Stiffness"
}
alert.addAction(saveAction)
alert.addAction(cancelAction)
presentViewController(alert,
animated: true,
completion: nil)
Code for Image View
图像查看代码
let image = UIImage(named: "springAtWall")
saveAction.setValue(image, forKey: "image")
alert.addAction(saveAction)
回答by Christian
Yes, you can add a UIImageViewas a subview to your alert view.
是的，您可以将 aUIImageView作为子视图添加到警报视图中。
var imageView = UIImageView(frame: CGRect(x: 220, y: 10, width: 40, height: 40))
imageView.image = yourImage
alert.view.addSubview(imageView)
回答by Hardik Trivedi
Here is the solution for Swift 4:
这是 Swift 4 的解决方案：
let showAlert = UIAlertController(title: "Demo Alert", message: nil, preferredStyle: .alert)
let imageView = UIImageView(frame: CGRect(x: 10, y: 50, width: 250, height: 230))
imageView.image = image // Your image here...
showAlert.view.addSubview(imageView)
let height = NSLayoutConstraint(item: showAlert.view, attribute: .height, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 320)
let width = NSLayoutConstraint(item: showAlert.view, attribute: .width, relatedBy: .equal, toItem: nil, attribute: .notAnAttribute, multiplier: 1, constant: 250)
showAlert.view.addConstraint(height)
showAlert.view.addConstraint(width)
showAlert.addAction(UIAlertAction(title: "OK", style: .default, handler: { action in
// your actions here...
}))
self.present(showAlert, animated: true, completion: nil)
Output will be somehow like below for all iPhones:
对于所有 iPhone，输出将类似于以下内容：
回答by Gustavo Vollbrecht
Swift 4:
斯威夫特 4：
var imageView = UIImageView(frame: CGRect(x: 220, y: 10, width: 40, height: 40))
imageView.image = <#yourImage#>
alert.view.addSubview(imageView)
回答by Kakumanu siva krishna
We can add image as one option in alert view controller like this.
我们可以像这样在警报视图控制器中添加图像作为一个选项。
let imageView = UIImageView(frame: CGRect(origin: CGPoint(x: 0,y :0), size: CGSize(width: 196, height: 196)))
imageView.image = image
UIGraphicsBeginImageContextWithOptions(imageView.bounds.size, imageView.isOpaque, 0.0)
defer { UIGraphicsEndImageContext() }
let context = UIGraphicsGetCurrentContext()
imageView.layer.render(in: context!)
let finalImage = UIGraphicsGetImageFromCurrentImageContext()
let alertMessage = UIAlertController(title: "Your Title", message: "", preferredStyle: .alert)
let action = UIAlertAction(title: "", style: .default, handler: nil)
action.setValue(finalImage?.withRenderingMode(UIImageRenderingMode.alwaysOriginal), forKey: "image")
alertMessage .addAction(action)
let action1 = UIAlertAction(title: "OK", style: .default, handler: nil)
alertMessage .addAction(action1)
self.present(alertMessage, animated: true, completion: nil)
