Collect the card data from your UI and construct a
CardBuilder with it. You can then
tokenize that to get a nonce that can be sent to your server:
CardBuilder cardBuilder = new CardBuilder() .cardNumber("4111111111111111") .expirationDate("09/2018"); Card.tokenize(mBraintreeFragment, cardBuilder);
You'll need to register a listener to receive a payment method nonce once the card tokenization finishes.