ios - Swift - AWS S3 Upload Image from Photo Library and download it -


i've looked many amazon docs didn't find enough information upload , download images s3 using swift.
how can that?

after doing many research i've got working,

import awss3 import awscore

upload:

i assume have implemented uiimagepickercontrollerdelegate already.

step 1:

  • create variable holding url:

    var imageurl = nsurl()

  • create upload completion handler obj:

    var uploadcompletionhandler: awss3transferutilityuploadcompletionhandlerblock?

step 2: image url imagepickercontroller(_:didfinishpickingmediawithinfo:):

  • set value of imageurl in delegate method:

    func imagepickercontroller(picker: uiimagepickercontroller, didfinishpickingmediawithinfo info: [string : anyobject]){      //getting details of image     let uploadfileurl = info[uiimagepickercontrollerreferenceurl] as! nsurl      let imagename = uploadfileurl.lastpathcomponent     let documentdirectory = nssearchpathfordirectoriesindomains(.documentdirectory, .userdomainmask, true).first! string      // getting local path     let localpath = (documentdirectory nsstring).stringbyappendingpathcomponent(imagename!)       //getting actual image     let image = info[uiimagepickercontrolleroriginalimage] as! uiimage     let data = uiimagepngrepresentation(image)     data!.writetofile(localpath, atomically: true)      let imagedata = nsdata(contentsoffile: localpath)!     imageurl = nsurl(fileurlwithpath: localpath)      picker.dismissviewcontrolleranimated(true, completion: nil) }

step 3: call uploadimage method after imageurl set upload image bucket:

func uploadimage(){      //defining bucket , upload file name     let s3bucketname: string = "bucketname"     let s3uploadkeyname: string = "public/testimage.jpg"       let expression = awss3transferutilityuploadexpression()     expression.uploadprogress = {(task: awss3transferutilitytask, bytessent: int64, totalbytessent: int64, totalbytesexpectedtosend: int64) in         dispatch_async(dispatch_get_main_queue(), {             let progress = float(totalbytessent) / float(totalbytesexpectedtosend)             print("progress is: \(progress)")         })     }      self.uploadcompletionhandler = { (task, error) -> void in         dispatch_async(dispatch_get_main_queue(), {             if ((error) != nil){                 print("failed error")                 print("error: \(error!)");             }             else{                 print("sucess")             }         })     }      let transferutility = awss3transferutility.defaults3transferutility()      transferutility.uploadfile(imageurl, bucket: s3bucketname, key: s3uploadkeyname, contenttype: "image/jpeg", expression: expression, completionhander: uploadcompletionhandler).continuewithblock { (task) -> anyobject! in         if let error = task.error {             print("error: \(error.localizeddescription)")         }         if let exception = task.exception {             print("exception: \(exception.description)")         }         if let _ = task.result {             print("upload starting!")         }          return nil;     } }

download:

func downloadimage(){      var completionhandler: awss3transferutilitydownloadcompletionhandlerblock?      let s3bucketname: string = "bucketname"     let s3downloadkeyname: string = "public/testimage.jpg"      let expression = awss3transferutilitydownloadexpression()     expression.downloadprogress = {(task: awss3transferutilitytask, bytessent: int64, totalbytessent: int64, totalbytesexpectedtosend: int64) in         dispatch_async(dispatch_get_main_queue(), {             let progress = float(totalbytessent) / float(totalbytesexpectedtosend)             print("progress is: \(progress)")         })     }      completionhandler = { (task, location, data, error) -> void in         dispatch_async(dispatch_get_main_queue(), {             if ((error) != nil){                 print("failed error")                 print("error: \(error!)")             }             else{                 //set image                 var downloadedimage = uiimage(data: data!)             }         })     }      let transferutility = awss3transferutility.defaults3transferutility()      transferutility.downloadtourl(nil, bucket: s3bucketname, key: s3downloadkeyname, expression: expression, completionhander: completionhandler).continuewithblock { (task) -> anyobject! in         if let error = task.error {             print("error: \(error.localizeddescription)")         }         if let exception = task.exception {             print("exception: \(exception.description)")         }         if let _ = task.result {             print("download starting!")         }         return nil;     }  }

ref. upload image

ref. download image

many jzorz


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