react-native-paypal

A React Native interface for the PayPal Payment UI

Setup

1. Add react-navive-paypal to your project

npm install --save react-native-paypal

2. Add the following to android/app/build.gradle

dependencies {
    // ...
    compile project(':react-native-paypal')
}

3. Add the following to android/settings.gradle

include ':react-native-paypal'
project(':react-native-paypal').projectDir = new File(rootProject.projectDir, '../node_modules/react-native-paypal/android')

4. Edit android/src/.../MainActivity.java

// ...
import br.com.vizir.rn.paypal.PayPalPackage; // <--
import br.com.vizir.rn.paypal.PayPal; // <--
import android.content.Intent; // <--

public class MainActivity extends Activity implements DefaultHardwareBackBtnHandler {
    // ...
    private static final int PAY_PAL_REQUEST_ID = 9; // <-- Can be any unique number
    private PayPalPackage payPalPackage; // <--

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        // ...
        payPalPackage = new PayPalPackage(this, PAY_PAL_REQUEST_ID); // <--

        mReactInstanceManager = ReactInstanceManager.builder()
                .setApplication(getApplication())
                .setBundleAssetName("index.android.bundle")
                .setJSMainModuleName("index.android")
                .addPackage(new MainReactPackage())
                // ...
                .addPackage(payPalPackage) // <--
                .setUseDeveloperSupport(BuildConfig.DEBUG)
                .setInitialLifecycleState(LifecycleState.RESUMED)
                .build();
        // ...
    }

    // ...

    @Override
    public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
       super.onActivityResult(requestCode, resultCode, data);
       if (requestCode == PAY_PAL_REQUEST_ID) {
           payPalPackage.handleActivityResult(requestCode, resultCode, data); // <--
       } else {
           otherModulesHandlers(requestCode, resultCode, data);
       }
    }
}

5. Usage example:

var {PayPal} = require('React').NativeModules;
PayPalAndroid.paymentRequest({
  clientId: 'AbyfNDFV53djg6w4yYgiug_JaDfBSUiYI7o6NM9HE1CQ_qk9XxbUX0nwcPXXQHaNAWYtDfphQtWB3q4R',
  environment: PayPalAndroid.SANDBOX,
  price: '42.00',
  currency: 'USD',
  description: 'PayPal Test'
}).then((confirm, payment) => console.log('Paid'); /* MUST verify payment in server*/)
.catch((error_code) => console.error('Failed to pay through PayPal'));

6. Callback parameters:

If all goes OK with the payment than the paymentRequest promise is resolved with the following arguments as JSON strings:

• A confirm:

{
  "client": {
    "environment": "mock",
    "paypal_sdk_version": "2.12.4",
    "platform": "Android",
    "product_name": "PayPal-Android-SDK"
  },
  "response": {
    "create_time": "2014-02-12T22:29:49Z",
    "id": "PAY-6RV70583SB702805EKEYSZ6Y",
    "intent": "sale",
    "state": "approved"
  },
  "response_type": "payment"
}

• A payment:

{
  "amount": "1.00",
  "currency_code": "USD",
  "short_description": "PayPal Test",
  "intent": "sale"
}

Handling callbacks:

PayPal.paymentRequest(...).then(function (payment, confirm) {
  sendPaymentToConfirmInServer(payment, confirm);
})

If anything fails the promise will be notify an error with a code which will be one of:

• USER_CANCELLED
• INVALID_CONFIG

Handling failures:

PayPal.paymentRequest(...).catch(function (error_code) {
    if (error_code == PayPal.USER_CANCELLED) {
        // User didn't complete the payment
    } else if (error_code == PayPal.INVALID_CONFIG) {
        // Invalid config was sent to PayPal
    }
})

TODO:

• Automated tests
• iOS version
• Future payment (subscriptions)