native-activity example

README.md

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+This is a minimal test application based on `GameActivity` that just
+runs a mainloop based on android_activity::poll_events() and traces
+the events received without doing any rendering. It also saves and
+restores some minimal application state.
+
+```
+export ANDROID_NDK_HOME="path/to/ndk"
+export ANDROID_HOME="path/to/sdk"
+
+rustup target add aarch64-linux-android
+cargo install cargo-ndk
+
+export CPPFLAGS="-DMDB_USE_ROBUST=0" && export CFLAGS="-DMDB_USE_ROBUST=0" && cargo ndk -t arm64-v8a -o app/src/main/jniLibs/ build
+./gradlew build
+./gradlew installDebug
+adb shell am start -n mw.gri.android/.MainActivity
+```