How to convert base64 into NSDATA in swift

Question

I am working on an iOS project. It stores audio on web server in the form of base64 string. When I request server to get base64 Strings for all audios and tried convert it in NSData I am getting nil.

do
{
   var audioData: NSData! = NSData(base64EncodedString: audioBase64String, options: NSDataBase64DecodingOptions(rawValue:0))
   if audioData != nil
   {
      let sound = try AVAudioPlayer(data: audioData)
      sound.play()
   }
   else
   {
        print("Data Not Exist")
   }
}
catch
{
}

On Android same base64 string is converted into byte array and is playing, but in iOS audioBase64String return nil for NSData.

Include a sample base64 in your question. Is it possible that adding `NSDataBase64DecodingIgnoreUnknownCharacters` already fixes the issue? (maybe you b64 ends in a newline?) — hnh, Aug 29 '16 at 12:21
You already getting Base 64 String from server and you again doing same thing for encoding thats why you not getting result. So need to do decode now. — Anand Nimje, Aug 29 '16 at 12:30

Muhammad Zeshan Arif · Accepted Answer · 2018-12-18T09:41:44.747

16

This works:

Swift 3 and 4:

var audioData = Data(base64Encoded: recording_base64, options: .ignoreUnknownCharacters)

Swift 2:

var audioData = NSData(base64EncodedString: recording_base64, options: NSDataBase64DecodingOptions.IgnoreUnknownCharacters)

edited Dec 18 '18 at 09:41

answered Aug 29 '16 at 13:01

Muhammad Zeshan Arif

475
1
6
19

score 3 · Answer 2 · answered Dec 01 '16 at 20:24

3

For Swift 3:

var audioData = Data(base64Encoded: recording_base64, options: .ignoreUnknownCharacters)

answered Dec 01 '16 at 20:24

pableiros

14,932
12
99
105

score -2 · Answer 3 · answered Aug 29 '16 at 12:52

-2

Try this library. You can get NSData from base64 string and then init your AVAudioPlayer with this data. Please read AVAudioPlayer Apple's Documentation.

answered Aug 29 '16 at 12:52

Serhii Londar

231
1
18

How to convert base64 into NSDATA in swift

3 Answers3

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