如何创建一个UIImage查看编程 - 斯威夫特如何创建一个UIImage查看编程 - 斯威夫特(H

我试图以编程方式创建一个UIImage观，我有一个新的观点，我试着这样做

let imageName = "yourImage.png"
yourview.backgroundColor = UIColor.colorWithPatternImage(UIImage(named:imageName))

这并没有工作，因为我不知道这应该是在第二行yourview。

问：如何使一个UIImageView出现在屏幕上的编码它，而不是在故事板做

Answer 1:

首先创建一个UIImage从你的图像文件，然后创建一个UIImageView来自：

let imageName = "yourImage.png"
let image = UIImage(named: imageName)
let imageView = UIImageView(image: image!)

最后，你需要给imageView框架，并将其添加您的看法它是可见的：

imageView.frame = CGRect(x: 0, y: 0, width: 100, height: 200)
view.addSubview(imageView)

Answer 2:

首先，创建然后在UIImageView的添加UIImageView的形象。

    var imageView : UIImageView
    imageView  = UIImageView(frame:CGRectMake(10, 50, 100, 300));
    imageView.image = UIImage(named:"image.jpg")
    self.view.addSubview(imageView)

Answer 3:

这个答案是更新斯威夫特3。

这是你如何可以以编程方式添加的形象图，你可以控制的约束。

Class ViewController: UIViewController {

    let someImageView: UIImageView = {
       let theImageView = UIImageView()
       theImageView.image = UIImage(named: "yourImage.png")
       theImageView.translatesAutoresizingMaskIntoConstraints = false //You need to call this property so the image is added to your view
       return theImageView
    }()

    override func viewDidLoad() {
       super.viewDidLoad()

       view.addSubview(someImageView) //This add it the view controller without constraints
       someImageViewConstraints() //This function is outside the viewDidLoad function that controls the constraints
    }

    // do not forget the `.isActive = true` after every constraint
    func someImageViewConstraints() {
        someImageView.widthAnchor.constraint(equalToConstant: 180).isActive = true
        someImageView.heightAnchor.constraint(equalToConstant: 180).isActive = true
        someImageView.centerXAnchor.constraint(equalTo: view.centerXAnchor).isActive = true
        someImageView.centerYAnchor.constraint(equalTo: view.centerYAnchor, constant: 28).isActive = true
    }

}

Answer 4:

您可以在一个线以上使用。

  let imageView = UIImageView(image: UIImage(named: "yourImage.png")!)

Answer 5:

谢谢，MEnnabah，只需添加到您的代码，你缺少=在声明语句标志：

let someImageView: UIImageView = {
   let theImageView = UIImageView()
   theImageView.image = UIImage(named: "yourImage.png")
   theImageView.translatesAutoresizingMaskIntoConstraints = false //You need to call this property so the image is added to your view
   return theImageView
}()

一切是，所有完美的斯威夫特3。

Answer 6:

在雨燕3.0：

var imageView : UIImageView
    imageView  = UIImageView(frame:CGRect(x:10, y:50, width:100, height:300));
    imageView.image = UIImage(named:"Test.jpeg")
    self.view.addSubview(imageView)

Answer 7:

在雨燕4.2和10.1的Xcode

//Create image view simply like this.
let imgView = UIImageView()
imgView.frame = CGRect(x: 200, y: 200, width: 200, height: 200)
imgView.image = UIImage(named: "yourimagename")//Assign image to ImageView
imgView.imgViewCorners()
view.addSubview(imgView)//Add image to our view

//Add image view properties like this(This is one of the way to add properties).  
extension UIImageView {
    //If you want only round corners
    func imgViewCorners() {
        layer.cornerRadius = 10
        layer.borderWidth = 1.0
        layer.masksToBounds = true
    }
}

Answer 8:

斯威夫特4：

首先为您的UIImageView的出口

@IBOutlet var infoImage: UIImageView!

然后使用UIImageView的图像属性

infoImage.image = UIImage(named: "icons8-info-white")

文章来源: How do you create a UIImage View Programmatically - Swift