Display UIImageView using Swift from AWS - ios

Question

I'm trying to render an image in UIImageView using Swift. The source object is located in an AWS S3 bucket. I could not find any example code on Google. So I tried to translate the code given in this link [AWS S3 SDK v2 for iOS - Download an image file to UIImage from Obj-C to Swift, but failed. I'm a beginner in iOS.
let accessKey = "ACCESS_CODE";
let secretKey = "SECRET_KEY";
// let credentialsProvider = AWSStaticCredentialsProvider.credentialsWithAccessKey(accessKey, secretKey: secretKey)
// ^ Xcode says - credentialsWithAccessKey is deprecated, use initWithAccessKey
let credentialsProvider = AWSStaticCredentialsProvider.initWithAccessKey(accessKey, secretKey: secretKey)
// ^ Xcode says - AWSStaticCredentialsProvider.Type does not have a member named ‘initWithAccessKey’
I could be doing very many things wrong here, even silly mistakes. The best help would be to point to some example code.

Answer 1

Have you tried like this
var credentialsProvider: AWSStaticCredentialsProvider = AWSStaticCredentialsProvider.credentialsWithAccessKey("MY_ACCESS_KEY", secretKey: "MY_SECRET_KEY")
var configuration: AWSServiceConfiguration = AWSServiceConfiguration.configurationWithRegion(AWSRegionUSWest1, credentialsProvider: credentialsProvider)
AWSServiceManager.defaultServiceManager().defaultServiceConfiguration = configuration
var transferManager: AWSS3 = AWSS3(configuration: configuration)
var getImageRequest: AWSS3GetObjectRequest = AWSS3GetObjectRequest.new()
getImageRequest.bucket = "MY_BUCKET"
getImageRequest.key = "MY_KEY"
transferManager.getObject(getImageRequest).continueWithExecutor(BFExecutor.mainThreadExecutor(), withBlock: {(task: BFTask) -> id in if task.error {
NSLog("Error: %#", task.error)
}
else {
NSLog("Got image")
var data: NSData = task.result.body()
dispatch_async(dispatch_get_main_queue(), {
var image: UIImage = UIImage.imageWithData(data)
myImageView.image = image
})

Answer 2

I created a custom class to download image. It worked for me.
class AWSImageDownloader {
init(AccessKey accessKey:String, SecretKey secretKey:String, andRegion region:AWSRegionType = .USEast1) {
let credentialsProvider = AWSStaticCredentialsProvider(accessKey: accessKey, secretKey: secretKey)
guard let configuration = AWSServiceConfiguration(region: region, credentialsProvider: credentialsProvider) else {
debugPrint("Failed to configure")
return
}
AWSServiceManager.default().defaultServiceConfiguration = configuration
}
func downloadImage(Name imageName:String, fromBucket bucketName:String, onDownload successCallback:#escaping AWSImageDownloadSuccess, andOnError errorCallback:#escaping AWSImageDownloadError){
let transferManager = AWSS3.default()
let getImageRequest = AWSS3GetObjectRequest()
getImageRequest?.bucket = bucketName
getImageRequest?.key = imageName
transferManager.getObject(getImageRequest!).continueWith(executor: AWSExecutor.mainThread()) { (anandt) -> Void in
if anandt.error == nil {
if let imageData = anandt.result?.body as? Data, let image = UIImage(data: imageData) {
successCallback(image)
} else {
errorCallback("Download failed")
}
} else {
let error = "Error \(anandt.error?.localizedDescription ?? "unknown by dev")"
errorCallback(error)
}
}
}
}