AES Encrypt/Decrypt SQL DB issue on decryption with Initialization Vector

Question

I am trying to store encrypted data in a SQL database using AES with Initialization Vector (IV). I am able to do this with the following class:

class Encrypted (wordE : String) {

val keyGenerator: KeyGenerator = KeyGenerator.getInstance(KeyProperties.KEY_ALGORITHM_AES,"AndroidKeyStore")
val keyGenParameterSpec = KeyGenParameterSpec.Builder("MyKeyAlias",
KeyProperties.PURPOSE_ENCRYPT or KeyProperties.PURPOSE_DECRYPT)
    .setBlockModes(KeyProperties.BLOCK_MODE_CBC)
    .setEncryptionPaddings(KeyProperties.ENCRYPTION_PADDING_NONE)
    .build()

fun genKey(){
    keyGenerator.init(keyGenParameterSpec)
    keyGenerator.generateKey()
}

fun getKey(): SecretKey {
    genKey()
    val keystore = KeyStore.getInstance("AndroidKeyStore")
    keystore.load(null)

    val secretKeyEntry = keystore.getEntry("MyKeyAlias", null) as KeyStore.SecretKeyEntry
    return secretKeyEntry.secretKey
}

fun encryptData(data: String): Pair<ByteArray, ByteArray> {
    val cipher = Cipher.getInstance("AES/CBC/NoPadding")

    var temp = data
    while (temp.toByteArray(Charsets.UTF_8).size % 16 != 0)
        temp += "\u0020"

    cipher.init(Cipher.ENCRYPT_MODE, getKey())

    val ivBytes = cipher.iv

    val encryptedBytes = cipher.doFinal(temp.toByteArray(Charsets.UTF_8))
    return Pair(ivBytes, encryptedBytes)
}

val pair = encryptData(wordE)
val encrypted = pair.second.toString(Charsets.UTF_8)
val iv = pair.first

}

but I have some problems to decrypt the data from the database. For decryption I have implemented another class:

class Decrypted (dataD: String, ivD :String) {

fun getKey(): SecretKey {
    val keystore = KeyStore.getInstance("AndroidKeyStore")
    keystore.load(null)

    val secretKeyEntry = keystore.getEntry("MyKeyAlias", null) as KeyStore.SecretKeyEntry
    return secretKeyEntry.secretKey
}

fun decryptData(data: String, iv : String) : String {

    val spec = IvParameterSpec(iv.toByteArray())
    val decipher = Cipher.getInstance("AES/CBC/NoPadding")

    decipher.init(Cipher.DECRYPT_MODE, getKey(), spec)
    val encryptedData: ByteArray = data.toByteArray()

    return decipher.doFinal(encryptedData).toString().trim()
}
    val decryptedData = decryptData(dataD, ivD)

}

I understood that IV must be the same as the one generated during encryption, so I also stored IV in the database as .

From my logcat I get an "InvocationTargetException" to "Invalid IV" message. I can see that when I call the Decrypted class enter for decryption:

dataEncrypted: /�,@�j3�RqLrY�

iv_stored: [B@5a36422