# Android support

Since **v7.38.0**, LicenseSpring provides a C++ SDK built using the **Android NDK**, designed for Android applications. The SDK is compatible with Android devices running **Android API Level 24 (Android 7.0 Nougat)** or higher.

* **NDK Version**: 26.1.10909125 and 27.2.12479018
* **Minimum Android API Level**: 24 (Android 7.0 Nougat)
* **ABI version**: arm64-v8

The SDK provides native C++ functionality and is optimized for performance on supported Android devices.

## JNI initialization

The SDK includes JNI code used for computing the hardware ID of the Android device, and the default data path used for writing the license and log files:

* `Secure.getString(getApplicationContext().getContentResolver(), Secure.ANDROID_ID)` is used to compute the hardware ID.
* `context.getFilesDir().getAbsolutePath()` is used to compute the default data path.

To set these values and integrate the native LicenseSpring library into your app, include the following class in your project.

{% code title="LicenseSpring.kt" %}

```kotlin
package com.licensespring.android

import android.content.Context
import android.util.Log

object LicenseSpring {

    // This method decalaration exactly matches the signature declared in the LicenseSpring SDK. Don't remove it.
    external fun setAndroidContextAndIDs(context: Context)

    init {
        try {
            System.loadLibrary("LicenseSpring")
            Log.d("LicenseSpring", "Native library loaded successfully")
        } catch (e: UnsatisfiedLinkError) {
            Log.e("LicenseSpring", "Failed to load native library: ${e.message}")
        }
    }

    fun initialize(appContext: Context) {
        try {
            setAndroidContextAndIDs(appContext.applicationContext)
            Log.d("LicenseSpring", "Native context and IDs set successfully")
        } catch (e: Exception) {
            Log.e("LicenseSpring", "Error calling native method: ${e.message}")
        }
    }
}
```

{% endcode %}

{% hint style="info" %}
Include this snippet in your project and call `LicenseSpring.initialize(context)` during your app startup. If you don't want to pass the context to the LicenseSpring C++ SDK, you must set your own [**hardware ID**](https://docs.licensespring.com/sdks/tutorials/best-practices/hardware-id) and [**data path.**](https://docs.licensespring.com/sdks/tutorials/best-practices/local-license-file)
{% endhint %}

A full example is contained in the `samples/AndroidNDKSample` project, together with a demo Android app where you can activate and check licenses.