harald/ink-notes
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feat(android): follow the activity lifecycle and build an APK (Issue #42)

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- The drawing surface is created once the native window exists (Resumed)
  and released when the app goes to the background (Suspended); before
  that everything is saved, as Android may stop the app at any time
- Android's back button acts like Escape instead of closing the app
- Panics are written to logcat; no update check on Android yet
- scripts/package-android.sh builds target/ink-notes_<version>_arm64.apk
  without Gradle (NDK, aapt2, zipalign, apksigner); signing key from
  ANDROID_KEYSTORE/ANDROID_KEYSTORE_PASS/ANDROID_KEY_ALIAS, otherwise
  the debug key

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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haraldandClaude Opus 5.5 committed 2026-10-27 18:23:28 +01:00
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commit 7faf78ddeb
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@@ -156,7 +156,7 @@ CI additionally checks `cargo fmt --check` and `cargo clippy --all-targets -- -D
Other systems:
- **Windows** is cross-compiled on Linux: `scripts/package-windows.sh` (needs `gcc-mingw-w64-x86-64`); the tests run with `wine` as runner (`CARGO_TARGET_X86_64_PC_WINDOWS_GNU_RUNNER=wine cargo test --target x86_64-pc-windows-gnu`).
- **Android** (in progress, Issue #42): `cargo check --target aarch64-linux-android` and `cargo rustc --lib --crate-type cdylib --target aarch64-linux-android` with the NDK compiler in `CC_aarch64_linux_android`. The app does not start there yet: the window surface still has to follow the activity lifecycle.
- **Android** (experimental, Issue #42): `scripts/package-android.sh` builds `target/ink-notes_<version>_arm64.apk` without Gradle. It needs the Android SDK (build-tools, platform 34; `ANDROID_HOME`, default `~/android-sdk`) and the NDK; the signing key comes from `ANDROID_KEYSTORE`, `ANDROID_KEYSTORE_PASS` and `ANDROID_KEY_ALIAS`, otherwise the debug key is used. Install with `adb install -r target/ink-notes_<version>_arm64.apk`, log output with `adb logcat -s ink-notes`. Notebooks stay inside the app for now; pen detection, on-screen keyboard and file dialogs are still missing.
New code comments and commit messages are written in English; older code and history still contain German.