# Android SDK Introduction

PayKKa provides an Android SDK that allows you to embed our [Web Checkout](/payments/docs/transaction/web/hosted-web) directly within your app, supporting calls from both Java and Kotlin projects. The SDK allows for custom payment callbacks, enabling PayKKa merchants to quickly integrate the PayKKa payment gateway. The latest Android SDK download link can be found in the [Android SDK Release History](/payments/docs/developer-resources/native-sdks/android-sdk/release-history).


Hosted webview in Android App
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## SDK Compatibility

The SDK supports direct calls from Java and Kotlin and is compatible with devices with a minSdkVersion of `21` (Android 5.x) or higher.

### Google Pay

The SDK currently utilizes the system's Android WebView to trigger the Google Pay payment dialog and complete transactions. Consequently, there are specific requirements for the device's system version, Android System WebView version, and Google Play Services version. Theoretically, devices meeting the following software requirements can successfully process Google Pay payments:

- Android System WebView / Chrome WebView ≥ *137*
- Google Play Services ≥ *25.18.30* (for native payment interaction)


Note
When using the SDK's API to open the WebView checkout, if the SDK determines that the device's system version is too low or detects that the `PAYMENT_REQUEST` feature is unsupported via `WebViewFeature.isFeatureSupported(WebViewFeature.PAYMENT_REQUEST)`, it will automatically launch an external browser (Chrome by default) and redirect the user to the PayKKa Web Checkout to complete the payment.

The following table lists the compatibility of device manufacturers, Android versions, and Google Play Services versions that have been verified through testing:

| Manufacturer OS Version | Android Version | Google Play Services Version | Android System WebView Version | Google Pay Support  |
|  --- | --- | --- | --- | --- |
| One UI 6.1 | Android 14 | 25.47.30 (260400-833691957) | 142.0.7444.171 | ✅ Supported  |
| OriginOS 5 | Android 15 | 25.47.30 (260400-833691957) | 143.0.7499.34 | ✅ Supported  |
| HyperOS 3.0.4.0 | Android 16 | 25.47.30 (260400-833691957) | 142.0.7444.174 | ✅ Supported  |