Set Up Your Client
You can collect customer payment information via the client SDK in a number of ways:
iOS SDK setup
Using Carthage
Braintree 6.0.0+ requires Carthage 0.38.0+ and the --use-xcframeworks
option when running carthage update
.
Add github "braintree/braintree_ios"
to your Cartfile
, and add the frameworks to your project.
Get a client token
Client tokens are optional: You can initialize Braintree with a tokenization key instead of a client token. If you are using a tokenization key, you may skip this section and use 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.
Your app should request a client token from your server. This example uses our sample integration server; please adapt it to use your own backend API.
- Swift
func fetchClientToken() {
// TODO: Switch this URL to your own authenticated API
let clientTokenURL = URL(string: "https://braintree-sample-merchant.herokuapp.com/client_token")!
let clientTokenRequest = URLRequest(url: clientTokenURL)
clientTokenRequest.setValue("text/plain", forHTTPHeaderField: "Accept")
URLSession.shared.dataTask(with: clientTokenRequest) { data, response, error in
// TODO: Handle errors
let clientToken = String(data: data!, encoding: .utf8)
// As an example, you may wish to present Drop-in at this point.
// Continue to the next section to learn more...
}.resume()
}
You should obtain a new client token frequently, at least once a day or as often as your app restarts. For the best experience, you should kick off this network operation before it would block a user interaction.
Try it now
We generated a demo tokenization key for you so you can jump right in. 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.
- Swift
let authorization = "sandbox_f252zhq7_hh4cpc39zq4rgjcg"
The above demo client token is for temporary use. You must change this client token in order to process payments with your Braintree sandbox or production account.
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 AccountLog 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 (again, adapt this example to your own setup):
- Swift
func postNonceToServer(paymentMethodNonce: String) {
// Update URL with your server
let paymentURL = URL(string: "https://your-server.example.com/payment-methods")!
var request = URLRequest(url: paymentURL)
request.httpBody = "payment_method_nonce=(paymentMethodNonce)".data(using: .utf8)
request.httpMethod = "POST"
URLSession.shared.dataTask(with: request) { (data, response, error) -> Void in
// TODO: Handle success or failure
}.resume()
}
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.
Next Page: Simple Server →