important

We will be updating our root SSL provider for API traffic to align with security standards starting April, 2020 in sandbox and May, 2020 in production. To avoid interruption to your checkout workflows, please update your SDK version to the appropriate minimum versions specified on this page.

The Braintree iOS SDK helps you accept payments in your iOS app.

Requirements

It goes without saying, but we’ll say it anyway: we always recommend using the latest versions of our SDKs. In order to communicate securely with the Braintree gateway starting April, 2020 in sandbox and May, 2020 in production, you must use at least version 4.10.0 of the iOS SDK.

Installation

There are multiple ways to include Braintree in your project. See the Installation section of our README.

Setup for app switch

To handle workflows that involve switching to another app or SFSafariViewController for authentication, you must register a URL type and configure your app to handle return URLs.

Register a URL type

  1. In Xcode, click on your project in the Project Navigator and navigate to App Target > Info > URL Types
  2. Click [+] to add a new URL type
  3. Under URL Schemes, enter your app switch return URL scheme. This scheme must start with your app's Bundle ID and be dedicated to Braintree app switch returns. For example, if the app bundle ID is com.your-company.your-app, then your URL scheme could be com.your-company.your-app.payments.
important

If you have multiple app targets, be sure to add the return URL type for all of the targets.

Testing the URL type

You can test out your new URL scheme by opening up a URL that starts with it (e.g. com.your-company.your-app.payments://test) in Mobile Safari on your iOS Device or Simulator.

In addition, always test your app switching on a real device.

Set your return URL

In your AppDelegate's application:didFinishLaunchingWithOptions: implementation, use setReturnURLScheme: with the value you set above.

For example:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    [BTAppSwitch setReturnURLScheme:@"com.your-company.your-app.payments"];
    return YES;
}

Handle app switch

Then pass the payment authorization URL to Braintree for finalization.

If you're using UISceneDelegate (introduced in iOS 13), call BTAppSwitch's handleOpenURLContext method from within the scene:openURLContexts scene delegate method.

- (void)scene:(UIScene *)scene openURLContexts:(NSSet<UIOpenURLContext *> *)URLContexts {
    for (UIOpenURLContext *urlContext in URLContexts) {
        NSURL *url = [urlContext URL];
        if ([url.scheme localizedCaseInsensitiveCompare:@"com.my-app.your-app.payments"] == NSOrderedSame) {
            [BTAppSwitch handleOpenURLContext:urlContext];      
        }
    }
}

Otherwise, if you aren't using UISceneDelegate, call BTAppSwitch's handleOpenURL method from within the application:openURL:options app delegate method. 

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
            options:(NSDictionary<UIApplicationOpenURLOptionsKey,id> *)options {
    if ([url.scheme localizedCaseInsensitiveCompare:@"com.your-company.your-app.payments"] == NSOrderedSame) {
        return [BTAppSwitch handleOpenURL:url options:options];
    }
    return NO;
}

Location Permissions

The Braintree iOS SDK uses device and browser location data for fraud detection when available (i.e. when location permissions have already been requested by your app and granted by the user). While you do not need to request location data from users in order to use Braintree, Apple requires a NSLocationWhenInUseUsageDescription key in your Info.plist if your app contains code referencing location APIs. If your app does not request location data, you will still need to include a NSLocationWhenInUseUsageDescription plist entry.

See also