How to convert a byte to a String in Swift?

Question

After searching for a while, I can't figure out how to get this simple result:

let byte : UInt8 = 0xF3 //Should become "F3"

I have tried this method that won't compile when passing-in either a byte or a byte array.

Have you tried this answer: stackoverflow.com/a/39772685/4228969 — toddg
– toddg, Commented Dec 15, 2016 at 15:54
Possible duplicate of How to convert UInt8 byte array to string in Swift — shallowThought
– shallowThought, Commented Dec 15, 2016 at 15:55
Possible duplicate of Swift native functions to have numbers as hex strings. — Martin R
– Martin R, Commented Dec 15, 2016 at 16:02
This might also help: How to convert Data to hex string in swift. — Martin R
– Martin R, Commented Dec 15, 2016 at 16:04
@toddg this didn't work for me, but this response link did the job thanks!! — Louis
– Louis, Commented Dec 15, 2016 at 16:25

Code Different · Accepted Answer · 2016-12-15 22:15:51Z

3

Two ways:

let s1 = String(byte, radix: 16, uppercase: true) // does not do 0-padding but works with
                                                  // all radices between 2 and 36

let s2 = String(format: "%02X", byte)             // very similar to C

edited Dec 15, 2016 at 22:15

answered Dec 15, 2016 at 16:23

Code Different

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1 Comment

Louis Over a year ago

Thanks for clarifying, I can't believe such a response did not exist yet!

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