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Crossmint Checkout React Native SDK Quickstart

For this quickstart we’ll be using Expo. You can follow this tutorial to create an expo app. Only do steps 1 and 3, plus the Crossmint-specific steps below.Prerequisites: Before starting, ensure you have completed the Expo prerequisites including Node.js, Git, and your development environment setup.

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Following Expo Tutorial + Crossmint SDK

1

Initialize a new Expo app

npx create-expo-app@latest crossmint-checkout-quickstart

cd crossmint-checkout-quickstart
2

Run reset-project script

npm run reset-project
3

Install @crossmint/client-sdk-react-native-ui

npm i @crossmint/client-sdk-react-native-ui
4

Add your .env.local environment variables

EXPO_PUBLIC_CLIENT_CROSSMINT_API_KEY="your_client_side_api_key"
EXPO_PUBLIC_RECIPIENT_WALLET_ADDRESS="your_solana_wallet_address" 
EXPO_PUBLIC_RECEIPT_EMAIL="your-email@example.com"
The receiptEmail field is required for delivering payment receipts to customers.
5

Replace index.tsx with

import { CrossmintEmbeddedCheckout, CrossmintProvider } from "@crossmint/client-sdk-react-native-ui";

export default function Index() {
    return (
        <CrossmintProvider apiKey={process.env.EXPO_PUBLIC_CLIENT_CROSSMINT_API_KEY ?? ""}>
            <CrossmintEmbeddedCheckout
                recipient={{
                    walletAddress: process.env.EXPO_PUBLIC_RECIPIENT_WALLET_ADDRESS ?? "",
                }}
                payment={{
                    crypto: {
                        enabled: false,
                    },
                    fiat: {
                        enabled: true,
                    },
                    receiptEmail: process.env.EXPO_PUBLIC_RECEIPT_EMAIL ?? "",
                }}
                lineItems={{
                    tokenLocator: "solana:7EivYFyNfgGj8xbUymR7J4LuxUHLKRzpLaERHLvi7Dgu", // XMEME token (staging)
                    executionParameters: {
                        mode: "exact-in", // Specifies exact USD amount to spend (vs exact-out for NFTs)
                        amount: "1", // USD amount to spend
                        maxSlippageBps: "500", // Maximum slippage tolerance in basis points (500 = 5%, default if not specified)
                    },
                }}
            />
        </CrossmintProvider>
    );
}
6

Run your project

npm run ios
# For Android:
npm run android

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Result

React Native Crossmint Checkout Result