Set Up Your Client

Android v4

• Current Braintree SDKs
• Android v5
• iOS v6
• JavaScript v3
• Previous Versions
• Android v4
• iOS v5
• JavaScript v2

Android SDK setup

In your app's build.gradle, add the following:

dependencies {
    implementation("com.braintreepayments.api:drop-in:6.13.0")
}

For other installation techniques and notes, see theAndroid Client SDK Guide.

Get a client token

Client tokens are optional: You can initialize Braintree with atokenization key instead of aclient token. If you are using a tokenization key, you may skip this section anduse the tokenization key for your authorization instead.

Your server is responsible for generating a client token, which contains the authorization and configuration details that your client needs to initialize the client SDK.

Initialize Braintree with aClientTokenProvider to asychronously fetch a client token on your behalf when it is needed in the SDK.

Try it now

So you can jump right in we generated atokenization key for you. This is for testing purposes only! When you're ready to build your own integration, use your own tokenization key or generate your own client token.

public class MyActivity extends AppCompatActivity implements DropInListener {
    private DropInClient dropInClient;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        dropInClient = new DropInClient(this, dropInRequest, "sandbox_f252zhq7_hh4cpc39zq4rgjcg");
        dropInClient.setListener(this);
    }
}

Present Drop-in UI

At this point, you are ready to collect payment information from your customer.

Drop-in is the easiest way to get started. It provides a fully fledged payments experience out of the box. You can also choose to create a custom UI and then tokenize the payment information directly.

public void onBraintreeSubmit(View v) {
    DropInRequest dropInRequest = new DropInRequest();
    dropInClient.launchDropInForResult(this, DROPIN_REQUEST_CODE);
}

To handle the result of the Drop-in flow, implement a DropInListener:

public class MyActivity extends AppCompatActivity implements DropInListener {
    @Override
    public void onDropInSuccess(@NonNull DropInResult dropInResult) {
        // send dropInResult.getPaymentMethodNonce().getString() to server
    }

    @Override
    public void onDropInFailure(@NonNull Exception error) {
        if (error instanceof UserCanceledException) {
            // user canceled
        } else {
            // handle error
        }
    }
}

Test your integration

Create a sandbox account

If you haven't already, sign up for a free Braintree sandbox account:

Sign Up for a Braintree Sandbox Account

Log in to obtain your sandbox API credentials. You'll need your:

• Sandbox merchant ID
• Public key
• Private key

Use these credentials for your development and testing.

Test values

When testing in the sandbox, be sure to use our test card numbers (e.g.4111111111111111) and nonces (e.g. fake-valid-nonce). Real payment method data will not work in the sandbox. See our Testing page for more details.

Send payment method nonce to server

Send the resulting payment method nonce to your server (this example uses Android Async Http Client - adapt to your own setup):

void postNonceToServer(String nonce) {
    AsyncHttpClient client = new AsyncHttpClient();
    RequestParams params = new RequestParams();
    params.put("payment_method_nonce", nonce);
    client.post("http://your-server/checkout", params, new AsyncHttpResponseHandler() {
        // Your implementation here
    });
}

world.greeted = true

At this point, you should have a working client-side checkout flow. When your user provides payment information, you receive a payment method nonce and send it to your server.

Next, your server closes the loop by using the payment method nonce to create a transaction.