Android Question Help implementing libsodium in b4a

#AdditionalJar: libsodium-jni-release.aar

Sub testlibsodium
    Private NativeMe As JavaObject
    NativeMe.InitializeContext
    NativeMe.RunMethod("generateEncryptionKeyPair", Null)

    Dim pub() As Byte = NativeMe.RunMethod("publicKey", Null)
    Dim priv() As Byte = NativeMe.RunMethod("privateKey", Null)

    Dim b64 As Base64
    Log(b64.EncodeBtoS(pub, 0, pub.Length))
    Log(b64.EncodeBtoS(priv, 0, priv.Length))
End Sub

#If Java
import org.libsodium.jni.SodiumConstants;
import org.libsodium.jni.crypto.Random;
import org.libsodium.jni.keys.KeyPair;

KeyPair encryptionKeyPair;

public void generateEncryptionKeyPair() {
    byte[] seed = new Random().randomBytes(SodiumConstants.SECRETKEY_BYTES);
    encryptionKeyPair = new KeyPair(seed);
}

public byte[] privateKey() {
    return encryptionKeyPair.getPrivateKey().toBytes();
}

public byte[] publicKey() {
    return encryptionKeyPair.getPublicKey().toBytes();
}
#End If