Line Pay

Prerequisites

• Please create a Tappay account and get the app ID from Tappay Dashboard.
• Integrate your Merchant with Tappay Dashboard.
• Please add the following config in your app.json

{
  "expo": {
    "plugins": [
      [
        "expo-tappay", {
          "linePay": {
            "enable": true
          },
          // other payment methods...
        }
      ]
    ]
  }
}

Parameter	Type	Description
enable	boolean	Whether to enable Line Pay

Usage

Setup Tappay

This method configures the Tappay instance. This setup must be completed before any Apple Pay transaction can be processed.

Parameter	Type	Description
appId	number	Your Tappay App ID
appKey	string	Your Tappay App Key
serverType	ServerType	Your Tappay Server Type

Server Type

• sandbox: for testing
• production: for production

import Tappay from "expo-tappay";

const tappay = new Tappay({
  appId: 11340, // replace with your Tappay App ID
  appKey: "app_whdEWBH8e8Lzy4N6BysVRRMILYORF6UxXbiOFsICkz0J9j1C0JUlCHv1tVJC", // replace with your Tappay App Key
  serverType: "sandbox",
});

Checking Line Pay Availability

Checks if Line Pay is available and properly configured on the device

return: boolean

if (tappay.linePay.isAvailable) {
  console.log("Line Pay is available");
} else {
  console.log("Line Pay is not available");
}

Install Line Pay

This method installs Line Pay.

IMPORTANT: This method only available for iOS cause the Tappay native dependency limitation.

return: void

tappay.linePay.install();

Get Prime Token

Call getPrimeToken() to get the prime token.

return: Promise<string>

tappay.linePay.getPrimeToken();

Setup Callback

You must use setupCallback function to setup the callback URL.

IMPORTANT: If setupCallback() is not called, the payment will not be successful.

Parameters:

Parameter	Type	Description
callbackUrl	string	The callback URL

return: void

import * as Linking from "expo-linking";

// To Get Deep Link URL from your app 
const callbackUrl = Linking.createURL("{PATH}");
tappay.linePay.setupCallback(callbackUrl);

Start Payment

Call startPayment() to start the payment.

IMPORTANT: First call getPrimeToken() to obtain the prime token, then send this token to your backend server to generate the payment URL.

Parameters:

Parameter	Type	Description
paymentUrl	string	The payment URL

PaymentResult

return: Promise<PaymentResult>

tappay.linePay.startPayment("{Payment_URL}");

Example

LinePay Example

Type

Line Pay Payment Result

Property	Type	Description
status	number	Transaction status code
recTradeId	string	Transaction ID
orderNumber	string	Order number
bankTransactionId	string	Bank transaction ID

Version

• TPDirect: v2.17.0