Question

How to convert byte array to hex string in Kotlin

Answer 1

fun byteArrayToHexString(byteArray: ByteArray): String {
    return byteArray.joinToString("") { "%02X".format(it) }
}

fun main() {
    val byteArray = byteArrayOf(3, 10, 7, 15, 12, 255.toByte())
    
    val hexString = byteArrayToHexString(byteArray)
    
    println("Hex String: $hexString")
}

 
  
/*
run:
  
Hex String: 030A070F0CFF

*/

 

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