Send POST parameters with MultipartFormData using Alamofire in iOS Swift

Question

I am using Alamofire  very first time  I am using the latest version Alamofire 1 3 1  I want to send one image   one video and some POST parameters in one API call  I am using multipart form data  The mutipart module is working  I am facing a problem to send extra POST parametersparams   Below is my code   params  is the dictionary which contains extra parameters  How can I append these POST parameters in the request  Please help          var fullUrl  String   Constants BASE URL     api CompleteChallenge           var params              authKey   Constants AuthKey           idUserChallenge    16            comment                photo   imagePath           video   videoPath           latitude    1            longitude    1            location    india             let imagePathUrl   NSURL fileURLWithPath  imagePath       let videoPathUrl   NSURL fileURLWithPath  videoPath            Alamofire upload           POST          URLString  fullUrl     http   httpbin org post         multipartFormData    multipartFormData in             multipartFormData appendBodyPart fileURL  imagePathUrl   name   photo               multipartFormData appendBodyPart fileURL  videoPathUrl   name   video                      encodingCompletion    encodingResult in             switch encodingResult               case  Success let upload                         upload responseJSON   request  response  JSON  error in                                                    case  Failure let encodingError

User · Answer

In Alamofire 4 it is important to add the body data before you add the file data   let parameters    String  String          self manager upload      multipartFormData    multipartFormData in         for  key  value  in parameters               multipartFormData append value data using   utf8    withName  key                    multipartFormData append imageData  withName   user   fileName   user jpg   mimeType   image jpeg              to  path

User · Answer

Swift 3   Alamofire 4 0  Addendum to the accepted answer   To append to multipartFormData in Swift 3   Alamofire 4 0  use the following method of MultipartFormData   public func append   data  Data  withName name  String                  And  to convert String to Data  the data using   method of String  E g    multipartFormData append  comment  data using   utf8    withName   comment

User · Answer

Alamofire 5 and above AF upload multipartFormData    multipartFormData in     multipartFormData append Data  quot one quot  utf8   withName   quot one quot       multipartFormData append Data  quot two quot  utf8   withName   quot two quot       to   quot https   httpbin org post quot   responseDecodable of  MultipartResponse self    response in         debugPrint response     documentation link  multipart upload

User · Answer

Swift 5  update  Ankush s Alamofire Code to       var fullUrl    http   httpbin org post     for example             Alamofire upload multipartFormData     multipartFormData  in                 multipartFormData append  imagePathUrl    withName   photo                   multipartFormData append  videoPathUrl    withName   video                   multipartFormData append Constants AuthKey data using   utf8  allowLossyConversion  false    withName   authKey                   multipartFormData append  16  data using   utf8  allowLossyConversion  false    withName   idUserChallenge                   multipartFormData append  111  data using   utf8  allowLossyConversion  false    withName   authKey                   multipartFormData append  comment  data using   utf8  allowLossyConversion  false    withName   comment                   multipartFormData append  0 00  data using   utf8  allowLossyConversion  false    withName   latitude                   multipartFormData append  0 00  data using   utf8  allowLossyConversion  false    withName   longitude                   multipartFormData append  India  data using   utf8  allowLossyConversion  false    withName   location                   to  fullUrl  method   post     encodingResult  in                 switch encodingResult                   case  success request  let upload  streamingFromDisk     streamFileURL                          upload responseJSON    response  in      do sth                       case  failure let encodingError

User · Answer

As in Swift 3 x for upload image with parameter we can use below alamofire upload method-  static func uploadImageData inputUrl String parameters  String Any  imageName  String imageFile   UIImage completion  escaping   Any - gt Void             let imageData   UIImageJPEGRepresentation imageFile   0 5           Alamofire upload multipartFormData     multipartFormData  in              multipartFormData append imageData   withName  imageName  fileName   swift file  arc4random uniform 100   jpeg   mimeType   image jpeg                for key in parameters keys                  let name   String key                  if let val   parameters name   as  String                      multipartFormData append val data using   utf8    withName  name                                              to inputUrl             result  in             switch result               case  success let upload                          upload uploadProgress closure     Progress  in                                     upload responseJSON   response in                      if let JSON   response result value                           completion JSON                       else                          completion nilValue                                                       case  failure let encodingError                   completion nilValue                                       Note  Additionally if our parameter is array of key-pairs then we can   use     var arrayOfKeyPairs     String Any      let json   try  JSONSerialization data withJSONObject  arrayOfKeyPairs  options    prettyPrinted    let jsonPresentation   String data  json   encoding   utf8

User · Answer

I found the solution    finally    We can append data in the request as multipartformdata    Below is my code     Alamofire upload           POST          URLString  fullUrl     http   httpbin org post         multipartFormData    multipartFormData in             multipartFormData appendBodyPart fileURL  imagePathUrl   name   photo               multipartFormData appendBodyPart fileURL  videoPathUrl   name   video               multipartFormData appendBodyPart data  Constants AuthKey dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   authKey               multipartFormData appendBodyPart data     16   dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   idUserChallenge               multipartFormData appendBodyPart data   comment  dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   comment               multipartFormData appendBodyPart data    0 00   dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   latitude               multipartFormData appendBodyPart data    0 00   dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   longitude               multipartFormData appendBodyPart data  India  dataUsingEncoding NSUTF8StringEncoding  allowLossyConversion  false    name   location                      encodingCompletion    encodingResult in             switch encodingResult               case  Success let upload                         upload responseJSON   request  response  JSON  error in                                 case  Failure let encodingError                                    EDIT 1  For those who are trying to send an array instead of float  int or string  They can convert their array or any kind of data-structure in Json String  pass this JSON string as a normal string  And parse this json string at backend to get original array

User · Answer

Found one more way of doing it   if let parameters   route parameters                        for  key  value  in parameters                            if value is String                               if let temp   value as  String                                   multipartFormData append temp description data using   utf8    withName  key                                                                                  else if value is NSArray                               if let temp   value as   Double                                   multipartFormData append temp description data using   utf8    withName  key                                                            else if let temp   value as   Int                                   multipartFormData append temp description data using   utf8    withName  key                                                            else if let temp   value as   String                                   multipartFormData append temp description data using   utf8    withName  key                                                                                  else if CFGetTypeID value as CFTypeRef     CFNumberGetTypeID                                 if let temp   value as  Int                                   multipartFormData append temp description data using   utf8    withName  key                                                                                  else if CFGetTypeID value as CFTypeRef     CFBooleanGetTypeID                                if let temp   value as  Bool                                   multipartFormData append temp description data using   utf8    withName  key                                                                                                                   if let items   MultipartData    route multipartData                      for item in items                           if let value   item value                              multipartFormData append value  withName  item key  fileName  item fileName  mimeType  item mimeType

User · Answer

func funcationname          var parameters    String String        let apiToken    Bearer   UserDefaults standard string forKey   vAuthToken          let headers     Vauthtoken  apiToken      let mobile      ApiUtillity sharedInstance getUserData key   mobile         parameters     first name  First name  last name  last name  email  Email  mobile no  mobile       print parameters      ApiUtillity sharedInstance showSVProgressHUD text   Loading          let URL1   ApiUtillity sharedInstance API Join   user update profile       let url   URL string  URL1 addingPercentEncoding withAllowedCharacters   urlQueryAllowed        var urlRequest   URLRequest url  url       urlRequest httpMethod    POST      urlRequest allHTTPHeaderFields   headers     Alamofire upload multipartFormData     multipartFormData  in          multipartFormData append self imageData pf pic  withName   profile image   fileName   image jpg   mimeType   image jpg             for  key  value  in parameters                multipartFormData append  value as AnyObject  data using  String Encoding utf8 rawValue    withName  key                    with  urlRequest     encodingResult  in          switch encodingResult           case  success let upload                     upload responseJSON   response in                 if let JSON   response result value                       print  JSON    JSON                        let status    JSON as AnyObject  value forKey   status   as  Int                     let sts   Int status                      if sts    200                                               ApiUtillity sharedInstance dismissSVProgressHUD                           let UserData     JSON as AnyObject  value forKey   data   as  NSDictionary                          ApiUtillity sharedInstance setUserData data  UserData                                              else                                               ApiUtillity sharedInstance dismissSVProgressHUD                            let ErrorDic NSDictionary    JSON as AnyObject  value forKey   message   as  NSDictionary                          let Errormobile no   ErrorDic value forKey   mobile no   as  String                         let Erroremail   ErrorDic value forKey   email   as  String                          if Errormobile no  count    nil                                                    else                                                       ApiUtillity sharedInstance dismissSVProgressHUDWithError error  Errormobile no                                                     if Erroremail  count    nil                                                    else                                                       ApiUtillity sharedInstance dismissSVProgressHUDWithError error  Erroremail                                                                                              case  failure let encodingError               ApiUtillity sharedInstance dismissSVProgressHUD               print encodingError

User · Answer

For Swift 4 2   Alamofire 4 7 3  Alamofire upload multipartFormData    multipart in     multipart append fileData  withName   payload   fileName   someFile jpg   mimeType   image jpeg       multipart append  comment  data using   utf8    withName   comment      to   endPointURL   method   post  headers  nil    encodingResult in     switch encodingResult       case  success let upload                 upload response   answer in             print  statusCode    answer response  statusCode                      upload uploadProgress   progress in               call progress callback here if you need it               case  failure let encodingError           print  multipart upload encodingError    encodingError              Also you could take a look at CodyFire lib it makes API calls easier using Codable for everything  Example for Multipart call using CodyFire    Declare your multipart payload model struct MyPayload  MultipartPayload       var attachment  Attachment   or you could use just Data instead     var comment  String       Prepare payload for request let imageAttachment   Attachment data  UIImage named   cat    jpeg  high                                     fileName   cat jpg                                    mimeType   jpg  let payload   MyPayload attachment  imageAttachment  comment   Some text      Send request easily APIRequest  endpoint   payload  payload       method  post       desiredStatus  created    201 CREATED      onError   error in         switch error code           case  notFound  print  Not found           default  print  Another error      error description                  onSuccess   result in         print  here is your decoded result           Btw normally it should be wrapped into an extension   so it should look even easier API some upload payload  onError   onSuccess     You could take a look at all the examples in lib s readme

User · Answer

This is how i solve my problem  let parameters                  station id            1000                title         Murat Akdeniz                body           xxxxxx    let imgData   UIImageJPEGRepresentation UIImage named   1 png    1         Alamofire upload          multipartFormData    MultipartFormData in               multipartFormData append imageData  withName   user   fileName   user jpg   mimeType   image jpeg                for  key  value  in parameters                   MultipartFormData append value data using  String Encoding utf8    withName  key                         MultipartFormData append UIImageJPEGRepresentation UIImage named   1 png     1    withName   photos 1    fileName   swift file jpeg   mimeType   image jpeg           MultipartFormData append UIImageJPEGRepresentation UIImage named   1 png     1    withName   photos 2    fileName   swift file jpeg   mimeType   image jpeg            to   http   platform twitone com station add-feedback      result  in          switch result           case  success let upload                      upload responseJSON   response in                 print response result value                         case  failure let encodingError   break             print encodingError

User · Answer

Well  since Multipart Form Data is intended to be used for binary   and not for text  data transmission  I believe it s bad practice to send data in encoded to String over it  Another disadvantage is impossibility to send more complex parameters like JSON  That said  a better option would be to send all data in binary form  that is as Data  Say I need to send this data let name    quot Arthur quot  let userIDs    1 2 3  let usedAge   20     alongside with user s picture  let image   UIImage named   quot img quot     For that I would convert that text data to JSON and then to binary alongside with image    Convert image to binary let data   UIImagePNGRepresentation image      Convert text data to binary let dict  Dictionary lt String  Any gt      quot name quot   name   quot userIDs quot   userIDs   quot usedAge quot   usedAge  userData   try  JSONSerialization data withJSONObject  dict   And then  finally send it via Multipart Form Data request  Alamofire upload multipartFormData     multiFoormData  in         multiFoormData append userData  withName   quot user quot           multiFoormData append data  withName   quot picture quot   mimeType   quot image png quot          to  url     encodingResult  in

User · Answer

for alamofire 4 use this             Alamofire upload multipartFormData     multipartFormData  in              multipartFormData append fileUrl  withName   video            fileUrl is your file path in iOS device and withName is parameter name             to  http   to your url path              result  in             switch result               case  success let upload                           upload uploadProgress closure     progress  in                      print  uploding                                       upload responseJSON   response in                     print  done                                   case  failure let encodingError                   print  failed                   print encodingError

[ios] Send POST parameters with MultipartFormData using Alamofire, in iOS Swift

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