在我的应用程序中，我正在尝试使用AWS S3上传图像。但是，当我从库或捕获的图像中选择图像时，在上传过程中我的应用程序正在崩溃。
let path:NSString = (NSTemporaryDirectory() as NSString).appendingPathComponent("testImage.png") as NSString
let imageData:NSData = UIImagePNGRepresentation(image)! as NSData
imageData.write(toFile: path as String, atomically: true)
let url:NSURL = NSURL(fileURLWithPath: path as String)
let expression = AWSS3TransferUtilityUploadExpression()
expression.setValue("public-read", forRequestParameter: "x-amz-acl")
expression.setValue("public-read", forRequestHeader: "x-amz-acl" )
let transferUtility = AWSS3TransferUtility.default()
transferUtility.uploadFile(url as URL!, bucket: bucketURL, key: myImageUploadKey , contentType: "image/png", expression: expression, completionHandler: { (task, error) in
if error != nil{
print(error?.localizedDescription ?? "error")
}else{
print(task.response ?? "Response error")
}
})
expression.progressBlock = { (task: AWSS3TransferUtilityTask, progress: Progress) in
print("progress \(progress.fractionCompleted)")
}
应用程序正在崩溃，因为transferUtility = AWSS3TransferUtility.default（）
所以请建议任何解决方案。非常感谢。谢谢。