Android Get Hash Key Method

GetHashKey.kt

fun getHashKey(){
  val info: PackageInfo
        try {
            info = packageManager.getPackageInfo("com.example.a2ndaccidentprevention", PackageManager.GET_SIGNATURES)
            for (signature in info.signatures) {
                var md: MessageDigest
                md = MessageDigest.getInstance("SHA")
                md.update(signature.toByteArray())
                val something: String = String(Base64.encode(md.digest(), 0))
                //String something = new String(Base64.encodeBytes(md.digest()));
                Log.e("hash key", something)
            }
        } catch (e1: PackageManager.NameNotFoundException) {
            Log.e("name not found", e1.toString())
        } catch (e: NoSuchAlgorithmException) {
            Log.e("no such an algorithm", e.toString())
        } catch (e: Exception) {
            Log.e("exception", e.toString())
        }
}