【iOS 开发】基础控件：UIImageView

iOS 基础控件 UIImageView

1. UIImageView 的使用

let uiImage = UIImage(named: "demo")
let size = uiImage?.size
print(size?.width.description as Any, size?.height.description as Any)

let imageView = UIImageView(image: uiImage)
// 设置 UIImageView 的尺寸和位置
imageView.frame = CGRect(x: 30, y: 460, width: 80, height: 80)
self.view.addSubview(imageView)

效果展示：

2. UIImageView 播放桢动画

var imageArray = Array<UIImage>()
for index in 1...15 {
    
    
    let uiImage = UIImage(named: "shark\(index)")
    imageArray.append(uiImage!)
}

let imageView = UIImageView(frame: CGRect(x: 150, y: 460, width: 80, height: 80))
// 设置 UIImageView 的动画图片数组
imageView.animationImages = imageArray
// 设置 UIImageView 动画播放时长
imageView.animationDuration = 3
// 设置 UIImageView 动画播放次数，0 代表无限循环播放
imageView.animationRepeatCount = 0

self.view.addSubview(imageView)

imageView.startAnimating()

效果展示：

附 Github 源码：

ViewController.swift