可以通过以下步骤实现:
import UIKit
import ImageIO
guard let gifURL = Bundle.main.url(forResource: "your_gif_file", withExtension: "gif") else {
return
}
let imageView = UIImageView()
guard let gifSource = CGImageSourceCreateWithURL(gifURL as CFURL, nil) else {
return
}
let frameCount = CGImageSourceGetCount(gifSource)
var frameArray: [UIImage] = []
for i in 0..<frameCount {
guard let frameImageRef = CGImageSourceCreateImageAtIndex(gifSource, i, nil) else {
continue
}
let frameImage = UIImage(cgImage: frameImageRef)
frameArray.append(frameImage)
}
imageView.animationImages = frameArray
imageView.animationDuration = Double(frameCount) / 10.0 // 设置动画的持续时间
imageView.animationRepeatCount = 0 // 设置动画的重复次数,0表示无限循环
imageView.startAnimating()
完整的代码示例:
import UIKit
import ImageIO
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
guard let gifURL = Bundle.main.url(forResource: "your_gif_file", withExtension: "gif") else {
return
}
let imageView = UIImageView()
imageView.frame = CGRect(x: 0, y: 0, width: 200, height: 200)
imageView.center = view.center
view.addSubview(imageView)
guard let gifSource = CGImageSourceCreateWithURL(gifURL as CFURL, nil) else {
return
}
let frameCount = CGImageSourceGetCount(gifSource)
var frameArray: [UIImage] = []
for i in 0..<frameCount {
guard let frameImageRef = CGImageSourceCreateImageAtIndex(gifSource, i, nil) else {
continue
}
let frameImage = UIImage(cgImage: frameImageRef)
frameArray.append(frameImage)
}
imageView.animationImages = frameArray
imageView.animationDuration = Double(frameCount) / 10.0
imageView.animationRepeatCount = 0
imageView.startAnimating()
}
}
这样,gif文件就会以动画的形式显示在UIImageView上了。
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