GameActivity

GameActivity is an Android Activity modeled on the API of NativeActivity, but with a few changes to make it a better starting point for game developers.

• It inherits from androidx.appcompat.app.AppCompatActivity - allowing you to use Jetpack components architecture (and still use some of the newer platform features on older Android devices).
• It renders into a SurfaceView that allows you to interface with any other Android UI element.
• It handles events like a Java activity would do, allowing any Android UI element (like a text edit, a webview, an ad or a form) to work as usual, but still exposes the events to your game using a C interface that makes them easy to consume in your game loop.
• It offers a C API similar to NativeActivity, and to the android_native_app_glue library.

Build the GameActivity AAR from sources

From the gamesdk directory:

• ./gradlew packageLocalZip -Plibraries=game_activity

The AAR is output in the package directory. It contains GameActivity, both the Java class and its C++ implementation, and the “android_native_app_glue” library.

Integrate GameActivity AAR to your build

Refer to the integration guide for now. Link to it and other documentation will be added here later.

Note that the library has a dependency on androidx.core version 1.5.0 or later. You should add the following to your app's build.gradle file: dependencies { ... implementation "androidx.core:core:1.5.0" ... Not adding this will cause a JNI crash at startup.