swift - 如何在 Swift 中将图像转换为二进制文件

Question

我创建了一个应用程序来拍摄图像并将该图像转换为二进制文件并发送到服务器。我拍摄了图像，但无法转换。

我使用这段代码:

func cameraa(){
    let picker = UIImagePickerController()
    picker.delegate = self
    picker.sourceType = .Camera
    presentViewController(picker, animated: true, completion: nil)
}


func imagePickerController(picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : AnyObject]) {
    ImageDisplay.image = info[UIImagePickerControllerOriginalImage] as? UIImage;dismissViewControllerAnimated(true, completion: nil)
}



@IBAction func Encode(sender: UIButton) {

    var imageEncode = ImageDisplay.image

    let image : UIImage = UIImage(imageEncode)
    let imageData = UIImagePNGRepresentation(image)

    print(imageData)

我在将 image(imageEncode) 解析为 (let image : UIImage = UIImage(imageEncode)) 时出错

Answer 1

ImageDisplay.image 已经是一个 UIImage。因此您无需再次将其转换为 UIImage。就这样做:

let imageData = UIImagePNGRepresentation(ImageDisplay.image)

print(imageData)