來自UIImagePicker的圖像的NSURL

Question

我正在嘗試將手機中的圖像上傳到我的Amazon S3存儲桶：

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!)
{
    var uploadReq = AWSS3TransferManagerUploadRequest()
    uploadReq.bucket = "bucketname";
    uploadReq.key = "testimage.png"
    uploadReq.body = image; //This line needs an NSURL
}

如何從UIImagePickerController獲取用戶選擇的圖像的NSURL？

Answer 1

雖然鄭潔的答案可能有用。 我找到了一種更簡單的方法：

    let fileURL = NSURL(fileURLWithPath: NSTemporaryDirectory().stringByAppendingPathComponent("imagetoupload"))
    let data = UIImagePNGRepresentation(image)
    data.writeToURL(fileURL!, atomically: true)
    uploadReq.body = fileURL

Answer 2

首先，U應該將圖像保存到文檔目錄。 然后發布網址。 你可以這樣：

func imagePickerController(picker: UIImagePickerController, didFinishPickingImage image: UIImage!, editingInfo: [NSObject : AnyObject]!) {
let data = UIImagePNGRepresentation(image)  // get the data
let paths = NSSearchPathForDirectoriesInDomains(.DocumentDirectory,.UserDomainMask,true) as! [String]
let path = paths[0]
let fileName = "testimage.png"
let filePath = path.stringByAppendingPathComponent(fileName)  // get the file url to save 

var error:NSError?
if !data.writeToFile(photoPath, options: .DataWritingAtomic, error: &error) {// save the data
  logger.error("Error write file: \(error)")
}

upload.body = NSURL(string: filePath)  // used url to post to server
}