A free, open-source lightweight launcher for the NWD K2401 Android car headunit (Allwinner, Android 10, 1280×720): an instrument-panel home screen that replaces the stock 3D animation, GPS-based prayer times with a live countdown, CPU temperature, rearrangeable app tiles, and an offline Quran with Mishary Alafasy recitation. Fully offline, no account.
Part of Klik Apps, a collection of free and open-source apps: klikapps.pages.dev
English | Bahasa Indonesia
Community project, not affiliated with NWD.
A lightweight launcher for the K2401 Android car headunit (Allwinner sun50iw10, Android 10, 1280×720 screen). It replaces the stock NWD launcher, which renders a 3D animation nonstop (~40% CPU), with a static instrument-panel home screen (~0–1% CPU, ~30 MB RAM). Written in plain Java with no libraries and built without Gradle. The app's own interface is in Indonesian.
Home
- A large clock, the day and date in Indonesian, and a 24-hour ruler with prayer-time markers.
- Offline prayer times using the Kemenag (Indonesian Ministry of Religious Affairs) method: Fajr 20°, Isha 18°, Shafi'i Asr, +2-minute ihtiyath. The location comes from GPS automatically through the passive provider, which adds no extra load. The countdown to the next prayer updates every second.
- Headunit CPU temperature, refreshed every 5 seconds. It is grey below 70 °C, amber from 70 °C, and red with "PANAS" (hot) from 85 °C.
- A 4×3 grid of 11 app tiles plus an All apps tile.
- Tap: open the app.
- Long-press and drag onto another tile: swap their positions.
- Long-press and release in place: pick a different app for that tile.
- In the All apps list, long-press an app to open its App Info.
Quran (offline)
- All 114 surahs with the Kemenag standard mushaf Arabic text, the Kemenag Indonesian translation, and an optional Latin transliteration.
- Verse-by-verse recitation by Mishary Rashid Alafasy. The verse being recited is highlighted and the screen scrolls along automatically.
- Playback modes: Continue (on to the next surah), Repeat surah, or Repeat verse. The last position is saved.
- Audio keeps playing in the background (foreground service + MediaSession), so it can be controlled from the notification and from media or steering-wheel buttons.
- Nothing is bundled in the APK: the text is downloaded once inside the app (about 6 MB, from equran.id), and the audio is downloaded per verse as it plays, with the rest of the surah fetched in the background. The DOWNLOAD button saves a whole surah before a trip; saved surahs are marked OFFLINE.
Automatic tweaks on startup (see Firmware-specific behaviour)
- ksmd is turned off on every boot.
- If Zlink (wireless CarPlay/Android Auto) opens its own screen within the first 3 minutes after boot or wake-up, the display goes back to home. The CarPlay session keeps running in the background.
KlikDash needs Android 10 or newer and is laid out for a 1280×720 landscape screen. The headunit-specific parts (default launcher, sleep/wake, Zlink, ksmd) target NWD firmware.
| Device | Screen | Android | Status |
|---|---|---|---|
| NWD K2401 (Allwinner sun50iw10) | 1280×720 | 10 | ✅ tested on a real device |
| Other headunits with NWD firmware | 1280×720 | 10+ | |
| Other Android headunits (FYT, MTK, Rockchip, …) | 1280×720 | 10+ | |
| Other screen sizes or portrait screens | – | 10+ | ❌ not laid out for them yet |
Zlink was used with wireless CarPlay on an iPhone; Android Auto has not been tested. Reports from other headunits are welcome: please open an issue with the model, screen size and Android version.
👉 Step-by-step install guide (written for beginners, with screenshots and FAQ)
- Download
klikdash-<version>.apk from Releases. - Install it: copy it to a USB stick and open it with the headunit's file manager, or run
adb install klikdash-<version>.apk. - Make it the home app: open KlikDash and tap the yellow JADIKAN TAMPILAN UTAMA button. On NWD
firmware it sets the launcher itself (needs USB debugging on); elsewhere it opens the Default home app
setting. LAUNCHER BAWAAN on the All apps page switches back. Manual alternative over ADB:
adb shell setprop persist.nwd.launcher.default com.klikdash.app adb shell cmd package set-home-activity com.klikdash.app/.HomeActivity
- Allow location when asked (for prayer times).
- With internet on, open Al-Qur'an once and tap UNDUH TEKS to download the text.
- Go through the test-before-you-drive checklist with the car parked.
klikdash/
├── AndroidManifest.xml
├── build.sh build + install on the headunit
├── klikdash.keystore APK signing key (do not lose it, see Notes)
├── src/com/klikdash/app/
│ ├── HomeActivity.java launcher: tiles, clock, prayer times, temperature, drag & drop
│ ├── PrayerTimes.java prayer-time calculation (praytimes.org algorithm)
│ ├── QuranActivity.java mushaf view + player
│ ├── QuranService.java background recitation player
│ ├── QuranData.java loader for assets/quran.txt
│ └── Tweaks.java system commands through local ADB (ksmd, hide Zlink)
├── res/ theme, vector icons
├── assets/
│ ├── quran.txt 6,236 verses (Arabic, Latin, translation), 3.1 MB — NOT in the repo, build it yourself
│ ├── display.ttf Big Shoulders (clock, labels)
│ ├── mono.ttf Martian Mono (small numbers)
│ ├── arabic.ttf Amiri Quran
│ ├── serif.ttf Literata (translation; instanced & subset)
│ └── licenses/ SIL OFL text for each font (shipped inside the APK)
├── tools/build_quran.py builds quran.txt from equran.id JSON
├── design/ README header (header.html → header.png / header.id.png) + real screenshots
└── LICENSE MIT (code); fonts stay under the OFL
../quran-data/ not part of the APK
├── text/ per-surah JSON from equran.id
├── zips/ audio/ Alafasy 128 kbps recitation (everyayah.com), 6,236 mp3 files
└── intro/ SSS000.mp3 files (unused)
- macOS with JDK 17 and the Android SDK (
build-tools/36.0.0,platforms/android-35) in~/Library/Android/sdkor$ANDROID_HOME. adb. The headunit is reached over ADB WiFi (192.168.1.17:5555), because its USB port works in host mode.
The first time, build assets/quran.txt (see Quran text); build.sh stops with
instructions if that file is missing.
adb connect 192.168.1.17:5555
./build.sh # build only → build/klikdash.apk
./build.sh release # public release APK without the Quran text → build/klikdash-<version>.apk
./build.sh install # build, install, grant location, make it the home app
DEVICE=1.2.3.4:5555 ./build.sh install # if the headunit's IP changesAlways install with ./build.sh install. With a plain adb install, the home preference can be lost until
set-home-activity is run again.
The app downloads the audio by itself (see Features). To fill all 114 surahs at once (1.6 GB) without
using the headunit's connection, download them on a computer and push them over ADB. Files live at
/sdcard/Android/data/com.klikdash.app/files/quran/audio/SSSAAA.mp3.
# download (once)
cd ../quran-data
seq -f "%03g" 1 114 | xargs -P 4 -I{} curl -fsS -C - -o zips/{}.zip \
https://everyayah.com/data/Alafasy_128kbps/zips/{}.zip
for z in zips/*.zip; do unzip -qq -o -j "$z" '*.mp3' -d audio; done
mkdir -p intro && mv audio/*000.mp3 intro/
# push to the headunit (~20 minutes over WiFi)
adb push audio /sdcard/Android/data/com.klikdash.app/files/quran/The basmala before verse 1 (except Al-Fatihah and At-Taubah) uses 001001.mp3.
⚠️ That folder belongs to the app. Uninstalling KlikDash deletes the audio. Updating with./build.sh installis safe.
The Kemenag mushaf text and translation are not included in this repo or in the release APK. The
distribution of mushaf in Indonesia is regulated by PMA 44/2016 (verification by LPMQ). The app downloads the
text from equran.id on first use and cleans it the same way as tools/build_quran.py (byte-identical output):
it adjusts a few marks so the Amiri font can display them. For your own developer build you can embed it
instead (./build.sh includes assets/quran.txt when present; ./build.sh release never does):
mkdir -p ../quran-data/text
for i in $(seq 1 114); do curl -fsS -o ../quran-data/text/$i.json https://equran.id/api/v2/surat/$i; done
python3 -I tools/build_quran.py ../quran-data/text assets/quran.txtThe script also cleans the text:
- It removes Kemenag-specific mushaf markers that the Amiri font lacks and that are not recited: U+08D6 (ruku' sign), U+06D4 (juz separator), and U+06D5 (waqf carrier).
- It attaches waqf marks to the preceding word.
- It strips control characters.
| Change | How to undo it |
|---|---|
Default launcher persist.nwd.launcher.default=com.klikdash.app |
adb shell setprop persist.nwd.launcher.default com.android.launcher |
| HOME preference set to KlikDash | adb shell cmd package set-home-activity com.android.launcher/com.android.launcher2.Launcher |
| TikTok uninstalled | Reinstall it from the Play Store |
| YouTube blocked from running in the background | adb shell cmd appops set com.google.android.youtube RUN_ANY_IN_BACKGROUND allow (also RUN_IN_BACKGROUND) |
| ksmd off (by KlikDash, every boot) | Remove Tweaks.applyAsync() from HomeActivity, then reboot |
The old NWD launcher is not removed. Its process stays because it also handles car info from the CAN bus.
- Default launcher. The NWD firmware ignores Android's home choice and uses
persist.nwd.launcher.default(PackageManagerService.chooseBestActivity). - Direct boot. During boot, the encrypted storage (FBE) stays locked for a few seconds, and only
directBootAwarelaunchers can be chosen. That is whyHomeActivityis directBootAware and keeps its settings in DE storage. The app list is reloaded afterACTION_USER_UNLOCKED. - System commands. Turning off ksmd and returning to home need system privileges.
Tweaks.javaruns them through the device's own ADB (127.0.0.1), without modifying the system partition, so ADB must be enabled on the headunit. If ADB is off, these two tweaks are skipped and everything else still works. - The headunit sleeps rather than shuts down. On ACC off the headunit only goes to sleep, so the
"just started" window for Zlink also begins on
SCREEN_ON,com.nwd.ACTION_AUTO_SLEEP_WAKE_STATE, andcom.nwd.android.ACTION_SYSTEM_AUTO_WAKEUP. - Zlink and WiFi. On startup, the Zlink service turns on a hotspot for wireless CarPlay, and the WiFi chip cannot run a hotspot and client WiFi at the same time. While wireless CarPlay is active, WiFi is off and the headunit cannot be reached from a computer. To use ADB, turn WiFi on manually.
- Security. Enabled ADB over WiFi gives full access to the headunit. Only connect the headunit to a private network (such as your own phone's hotspot), never to public WiFi.
- The city name is not detected automatically, because the geocoder on this device returns no results.
It can be set manually and is kept while the position stays within 15 km:
adb shell am start -n com.klikdash.app/.HomeActivity --es lat -6.1754 --es lon 106.8272 --es city "Jakarta" - Prayer-time accuracy is within ±1 minute of the Kemenag schedule (compared for Jakarta, 26 October 2026).
klikdash.keystore(aliaskokpit) must be backed up somewhere safe, for example as a password-manager attachment. It is not in the repo. Its password is in the macOS Keychain (serviceklikdash-keystore):security find-generic-password -a klikdash -s klikdash-keystore -w. For CI, set theKLIKDASH_KS_PASSenv variable. An APK signed with a different key cannot update KlikDash; you would have to uninstall first, and uninstalling also deletes the recitation audio. A fresh clone without a keystore gets a new key generated bybuild.sh.
Use at your own risk. This software is provided "as is", without warranty of any kind (see LICENSE).
⚠️ Test before you drive. After installing KlikDash, with the car parked, check that all of these still work:
- Reverse camera: shift into R and the camera image must appear right away.
- 360° camera (if fitted).
- Door-open warnings and car info from the CAN bus.
- Steering-wheel buttons: volume, next track and phone.
- Radio, Bluetooth and phone calls.
If anything does not work, switch back to the stock launcher (see Changes made on the headunit) and report it in an issue. Do not drive with a reverse camera that is not working. Some firmware shows the reverse camera or door warnings through the stock launcher, so this can differ from headunit to headunit.
- Changing the default launcher and system settings is not supported by the headunit maker and may affect your warranty. Every change can be undone (see Changes made on the headunit).
- Do not operate the screen while driving. Use the steering-wheel buttons, or stop safely first.
- Prayer times are calculated and may differ by a minute or so from official schedules; follow your local mosque or authority.
- The Quran text and translation are not included; check the text you build against an official mushaf.
- KlikDash is a community project and is not affiliated with or endorsed by NWD.
design/header.png (EN) and design/header.id.png (ID) are rendered from design/header.html using real
headunit screenshots:
cd design
for l in en id; do
out=header.png; [ $l = id ] && out=header.id.png
"/Applications/Google Chrome.app/Contents/MacOS/Google Chrome" --headless=new --hide-scrollbars \
--window-size=1280,640 --force-device-scale-factor=2 --virtual-time-budget=5000 \
--screenshot="$PWD/$out" "file://$PWD/header.html?lang=$l"
done- Code: MIT.
- Fonts: SIL Open Font License 1.1: Big Shoulders, Martian Mono, Amiri Quran, and Literata (via Google Fonts). Literata is instanced and subset; its name and license are unchanged.
- Text, transliteration, and translation (not included): equran.id, i.e. the Kemenag RI standard mushaf and translation. Rights and terms belong to their owners.
- Audio (not included): everyayah.com / versebyversequran.com, Mishary Rashid Alafasy 128 kbps. Follow the license on that site.
- Prayer times: the praytimes.org algorithm.
This project is not affiliated with NWD, Zjinnova (Zlink), Apple, Google, or Kemenag RI.