Android {Tools}

Quest

• start the browser with a specific URL adb shell am start -n com.oculus.vrshell/.MainActivity -d apk://com.oculus.browser -e uri ""

scrcpy

Used for mirroring on VR and AR devices but also eInk, e.g PineNote with stock OS.

• stream Quest/Quest 2 on low-end device, e.g RPi4 scrcpy -n -m 1024 -b 10M --max-fps=24 -f
  • unfortunately --crop=1832:1920:0:0 fails, bug in the HMD

Flutter

Example to get WebView https://pub.dev/packages/webview_flutter on a device :

cd ~/Prototypes/flutter-plugins/packages/webview_flutter/webview_flutter_android
docker run --rm -it -v "$PWD":/build --workdir /build/example cirrusci/flutter:stable flutter build apk
# if built and installed before
# docker run --rm -it -v "$PWD":/build --workdir /build/example cirrusci/flutter:stable flutter clean
# adb uninstall io.flutter.plugins.webviewflutterandroidexample
adb install example/build/app/outputs/flutter-apk/app-release.apk
adb shell monkey -p 'io.flutter.plugins.webviewflutterandroidexample' -v 500
# to check and control from desktop
# scrcpy 

Used on AugmentedReality for the Google Glass Enterprise 2 and VuzixBlade.

Projects

1. random moment polling (QS)
2. elastic behavior (QS)
3. InnovativITLab:WheelShare/
   • consider C2D instead of polling
4. automated creativity remote control
5. add to public and private PIM
   • http://android-developers.blogspot.be/2012/02/share-with-intents.html

Discovering Ionic/Cordova

• SRE steps (cf Principle)
  1. created ~/SandboxedReusableExplorations/ionic/
  2. installed ionic with dependencies via https://github.com/nraboy/ubuntu-ionic-installer
  3. started to follow http://ionicframework.com/docs/guide/installation.html
     1. created ionic.io account after started the build
     2. installed Ionic View on Android phone after started the build
     3. made an Android image via android avd
        1. terribly slow boot (1min black screen, several minutes on the Android splashscreen)
  4. found https://www.reddit.com/r/ionic/ while look for information on the slow boot time
  5. started in parallel (since the emulator was taking too long) Quick start from http://docs.ionic.io and trying https://apps.ionic.io in the WebView app
     1. without success, seemed limited to psuh/deploy/analytics...
  6. focusing instead on testing on a phone proper
     1. sending the apk from the build to the phone, worked
  7. using ionic serve to test in the browser
     1. nicely handles live reloading

From personal use

• find architecture to install apk adb shell getprop | grep product.cpu.abi
• apps on Google Play are account based
  • not device based
  • they can not be migrated to other account, just re-installed on another device
• to check the content of files written by an app via adb shell
  • cd /data/data/your.app.reversed.domain/files
    • cat yourfile.txt
• to access the SDcard simply enable via the nofication menu
  • then mount/.../umount
• using connectbot to access ssh
• QRcode
  • http://www.quora.com/QR-Codes/Why-are-QR-codes-so-ugly
  • http://mashable.com/2011/07/23/creative-qr-codes/
  • http://www.beautifulqrcodes.com
• general key resource
  • http://developer.android.com/guide/
    • installing
      • Ubuntu https://help.ubuntu.com/community/AndroidSDK
      • Debian http://workaround.org/developing-android-applications-on-debian
    • Android Debug Bridge (adb)
    • http://developer.android.com/guide/topics/usb/adk.html for hardware extensions
  • #android and #android-dev on freenode IRC network

vogella.com Android tutorials

• http://www.vogella.com/articles/Android/article.html
  • key clarifications on the vocabulary
  • Activity, View, Intent, ...
• http://www.vogella.com/articles/AndroidNotifications/article.html
  • works well but only for instantaneous notifications

blundell's Notification-for-a-user-chosen-time

• http://blog.blundell-apps.com/notification-for-a-user-chosen-time/
  • also required to do an android update project --target 1 --path . to work with ant
  • warning for reboot though, cf http://stackoverflow.com/questions/8461208/android-notification-after-reboot
• relying on http://blog.blundell-apps.com/basic-date-picker/

Hello World by CLI

Requires JDK, Ant, AndroidSDK

• http://www.syscs.com/node/504
  • explains how to
    • create an emulator image with android avd ...
    • use a template with create project
    • compile with ant debug
    • send the application to it for testing with avd -s DEVICE install PATH/TO/APP.apk
    • use adb to connect to a device (virtual or not) to run commands

Elastic Behavior

blending PIM and QS via QRcodes

• consider also for gamification

MVP

• ask as a notification a value between 1 and 10 stored in values.csv file in your memory card at 5 random moment of the day between 10AM and 10PM
  • Path:/pub/ElasticBehavior.apk
    • might need specific MIME type
    • code repo https://github.com/Utopiah/ElasticBehavior

Test

• generate QRcode via http://qrcode.kaywa.com with your server URL
  • e.g. http://fabien.benetou.fr/RealLife/YourAction
  • eg calories
    • daily sum done via dailycalories
  • consider instead Encode intent (iif it is possible to save or send the generated picture)
• take the QRcode after doing your action
  • open the targer URL
• display result
  • grep " /RealLife" /webroot/var/log/lighttpd/access.log | awk '{print $4 " " $7}'

Generalization

• X sampling per period (e.g. day, week, etc)
  • frequency (equidistant) or random (e.g. for flow) or standard deviations (hence the "elastic part)
  • value from numbers (e.g. floats from 1.0 to 10.0) or discrete list (e.g. picture of items) or QRcodes (physically located, motivated by SC22#LesObjectsDansLEspaceLaPlanificationDansLAction and more generally Wikipedia:Situated cognition)

Steps

1. enter server URL
2. enter habit to track
3. pick type of expected input values
   1. optionally generate QRcode to put in the target locations
   2. optionally activate conditional reminders (mobile notifications)
4. visit server URL of results

Technically

• request Scan intent to ZXing library to consider own server as "trusted" URL
  • cf http://stackoverflow.com/questions/2050263/using-zxing-to-create-an-android-barcode-scanning-app?
  • hence 1-click and doing HTTP GET of the returned value (and some tests) in the background rather than opening the browser
    • http://stackoverflow.com/questions/5870611/curl-in-android
  • e.g. http://192.168 prefix
• generate set of home cards or stickers based on that trusted URL
  • http://code.google.com/p/zxing/source/browse/trunk#trunk/core/src/com/google/zxing/qrcode/encoder

From YetAnotherTutorial

• notifications
  • http://developer.android.com/reference/android/app/Notification.html
  • http://developer.android.com/guide/topics/ui/notifiers/notifications.html
• location
  • http://marakana.com/s/tutorial_android_location_service_example,311/
• UI
  • http://www.androiduipatterns.com
• geo-notification
  • https://play.google.com/store/apps/details?id=com.rtsw.georeminderslite
• sleep tracking
  • https://sites.google.com/site/sleepasandroid/
• accelerometer
  • sensors in general
    • http://developer.android.com/reference/android/hardware/SensorManager.html
  • http://stackoverflow.com/questions/5180187/how-do-i-use-the-android-accelerometer
• voice actions
  • http://www.google.com/mobile/voice-actions/
    • program own command?
      • e.g. PIM [query]
  • consider alternative iris
    • disappointing

Social gatherings

• Google I/O Extended Brussels on Google+
• Brussels GTUG

To explore

• links to websites with content to discover
• Overlay
• Programming
• ObjectsExoBrain
• Cookbook:DetectMobile
• urban data
  • e.g. http://data.be
• programming itself
  • Java http://mobile.tutsplus.com/tutorials/android/java-tutorial/
  • Scala http://robots.thoughtbot.com/post/5836463058/scala-a-better-java-for-android
    • http://code.google.com/p/scalaforandroid/
    • http://www.assembla.com/wiki/show/scala-ide/Developing_for_Android
  • Ruby http://ruboto.org/
  • Scripting in general http://code.google.com/p/android-scripting/
  • MIT AppInventor http://www.appinventor.mit.edu with http://www.appinventorblocks.com
    • online simple IDE, very easy to install the packaged app via QRcode
      • need to allow installation from non-trusted sources
• http://code.google.com/p/android-notifier/
• http://web.airdroid.com/
• Cloud 2 Device Messaging https://developers.google.com/android/c2dm/
• http://f-droid.org
• computer vision
  • http://www.stanford.edu/class/ee368/Android/Tutorial-2-OpenCV-for-Android-Setup-Windows.pdf
  • http://code.opencv.org/projects/opencv/wiki/OpenCV4Android
  • potentially useful for Google Glass
• http://www.malgenomeproject.org

Note

My notes on Tools gather what I know or want to know. Consequently they are not and will never be complete references. For this, official manuals and online communities provide much better answers.