React Native

import { Linking } from 'react-native';
import { DodoCheckout } from '@dodopayments/react-native-checkout';

// Required for iOS's return-URL handling.
Linking.addEventListener('url', ({ url }) => DodoCheckout.handleOpenURL(url));

// showSuccess(), showFailure(), showExpired(), and reconcileAbandonedSession()
// are your own functions. See Abandoned Sessions for what to reconcile.
const result = await DodoCheckout.start({
  checkoutUrl,                          // from your backend's checkout session
  returnUrl: 'myapp://checkout/return', // scheme must be registered (see Installation)
  onEvent: (e) => console.log(e.type),  // logging only
});

switch (result.status) {
  case 'succeeded': showSuccess(result.paymentId); break;
  case 'failed':    showFailure(); break;
  case 'cancelled': await reconcileAbandonedSession(); break; // outcome unknown, not a failure
  case 'pending':   await reconcileAbandonedSession(); break;
  case 'expired':   showExpired(); break;
}

import { Linking } from 'react-native';
import { DodoCheckout } from '@dodopayments/react-native-checkout';

Linking.addEventListener('url', ({ url }) => {
  DodoCheckout.handleOpenURL(url);
});

const result = await DodoCheckout.start({
  checkoutUrl,
  returnUrl: 'myapp://checkout/return',
  customization: {
    android: { toolbarColor: '#6366F1', closeButtonStyle: 'back' },
    ios: { presentationStyle: 'fullScreen', colorScheme: 'dark' },
  },
});

import { DodoCheckout } from '@dodopayments/react-native-checkout';

const abandoned = await DodoCheckout.getAbandonedSession();
if (abandoned) {
  // Ask your backend for the outcome of abandoned.sessionId, and show it.
  // Clear the record only after the outcome is final:
  await DodoCheckout.clearAbandonedSession();
}