flutter_adyen

Note: This library is not official from Adyen.

Flutter plugin to integrate with the Android and iOS libraries of Adyen. This library enables you to open the Drop-in method of Adyen with just calling one function.

This should support One time payment and recurring payment.

Prerequisites

Before calling the plugin, make sure to get the payment methods from Adyen or better from your backend. For this, call the a /paymentMethods endpoint:

POST: https://checkout-test.adyen.com/v46/paymentMethods // Version number might be different Payload should contain the merchant account

{
  "merchantAccount": "<YOUR ACCOUNT>"
}

Append your API key and a content-type to the headers:

Content-Type: application/json
X-API-KEY: AQEXXXXXXXXXXXXXXXX

It's not recommended to store the API key in the front-end for security reasons!

####You also need to have the:

  • publicKey (from Adyen)
  • merchantAccount (from Adyen)
  • amount & currency
  • shopperReference (e.g userId)
  • reference (e.g transactionId)

##Setup

###Android Add this in your android/build.gradle

implementation "com.adyen.checkout:drop-in:3.2.1"

And in the AndroidManifest.xml in your application tag add this service, this allows adyen to tell the android app the result of the payment.

<application ...>
    ...
    <service
           android:name="app.petleo.flutter_adyen.MyDropInService"
           android:permission="android.permission.BIND_JOB_SERVICE" />

</application>

you also might need to set minifyEnabled & useProguard to false if it crashes on a release build


buildTypes {
           release {
               signingConfig signingConfigs.release               
               minifyEnabled false
               useProguard false
               proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
           }
       }

###iOS You need to add a URL_SCHEME if you do not have one yet.

Here is how to add one.

You might need to run this command pod update Adyen/Card in your ios folder.

##Usage Just add this in your dart code

 const PAYMENT_SUCCESS = 'SUCCESS';
 const PAYMENT_CANCELLED = 'CANCELLED';
 
 String dropInResponse = await FlutterAdyen.openDropIn(
                paymentMethods: jsonEncode(examplePaymentMethods),
                baseUrl: 'https://YOURBACKEND/payment/',
                authToken: 'Bearer AAABBBCCCDDD222111',
                merchantAccount: 'YOURMERCHANTACCOUNTCOM',
                publicKey: pubKey,
                amount: '1230',
                currency: 'EUR',
                iosReturnUrl: 'YOURAPP://' <-- URL_SCHEME_FOR_YOUR_iOS_APP
                shopperReference: DateTime.now().millisecondsSinceEpoch.toString(),
                reference: DateTime.now().millisecondsSinceEpoch.toString(),
              );
              
  if(dropInResponse == 'PAYMENT_SUCCESS') ... 
  if(dropInResponse == 'PAYMENT_CANCELLED') ...
  else ... // you will get the error message here. (It is not translated to any languages)

Important to know

The library expect your backend to provide the following endpoints as documented by Adyen:

Libraries

flutter_adyen
i18n