android-activity/examples/na-mainloop

This is a minimal test application similar to agdk-mainloop that is based on NativeActivity instead of GameActivity.

It shows how to run a mainloop based on native_activity::poll_events() and traces the events received without doing any rendering. It also saves and restores some minimal application state.

Since this test doesn't require a custom Activity subclass it's optionally possible to build this example with cargo apk.

The idea here is to test whether we can have a NativeActivity based glue layer which is API compatible with game-activity, which can optionally be used for very basic tests/demos that want the convenience of not needing to compile any Java code.

Gradle Build

rustup target add aarch64-linux-android

cargo install cargo-ndk

export ANDROID_NDK_HOME="path/to/ndk"
cargo ndk -t arm64-v8a -o app/src/main/jniLibs/  build

export ANDROID_HOME="path/to/sdk"
./gradlew build
./gradlew installDebug
adb shell am start -n co.realfit.namainloop/.MainActivity

Cargo APK Build

export ANDROID_NDK_HOME="path/to/ndk"
export ANDROID_SDK_HOME="path/to/sdk"

cargo install cargo-apk
cargo apk build
cargo apk run