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README_AMAZON.md

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Amazon IAP Support

The guide assumes that react-native-iap is implemented in your app and it works with Google Play with no issues. Here are the additional steps to add Amazon IAP support.

  • Add In-App Items for your app:

    1. Create "In-App Items" using Amazon Developer portal for your app. Amazon put up detailed instructions at https://developer.amazon.com/docs/in-app-purchasing/iap-create-and-submit-iap-items.html
    2. Add new SKU strings to your RNIap.getProducts or RNIap.getSubscriptions calls

  • App configuration

    1. The current version of Amazon IAP SDK does not play well with R8 optimization. (https://developer.amazon.com/docs/in-app-purchasing/iap-obfuscate-the-code.html). Add the code below in android/app/proguard-rules.pro
    -dontwarn com.amazon.**
-keep class com.amazon.** {*;}
-keepattributes *Annotation*
    1. Update AndroidManifest.xml to add the following:
    <application>
...
  <receiver android:name = "com.amazon.device.iap.ResponseReceiver"
      android:permission = "com.amazon.inapp.purchasing.Permission.NOTIFY" >
    <intent-filter>
      <action android:name = "com.amazon.inapp.purchasing.NOTIFY" />
    </intent-filter>
  </receiver>
...
</application>

Testing in development

The react-native-iap checks the install source of the app and determines the usage of Amazon IAP API based on that. The development environment does not set the install source, the default is to use Google Play as a fallback in this case. If the fallback needs to be changed to use Amazon Appstore while testing, the following code snippet needed just before calling RNIap.initConnection for the first time in the app:

if (__DEV__) {
  RNIap.setFallbackInstallSourceAndroid(RNIap.InstallSourceAndroid.AMAZON);
}
RNIap.initConnection(...)

Amazon offers the App Tester tool to make in-app purchases testing easier. More information can be found at https://developer.amazon.com/docs/in-app-purchasing/iap-app-tester-user-guide.html

Server Validation

Amazon IAP API supports validation of in-app purchases on a remote server side. More information is available at https://developer.amazon.com/docs/in-app-purchasing/iap-rvs-for-android-apps.html

Subscriptions

When fetching subscriptions from Amazon, make sure to use children SKUs (so SKUs for specific period ex. monthly or annualy), do not use parent subscription SKUs!

Caveats

Amazon does not return decimal price & currency. Only localized price as a string (ex. 11.22$). Please refer to https://forums.developer.amazon.com/answers/234257/view.html

The package will try its best to parse this string into decimal price. If the package cannot parse the price, it will be 0. Currency is detected based on users Amazon marketplace.