Android Development Container

This sets up development containers for Expo and Flutter using the Android SDK. The Dockerfile is derived from parts of thyrlian/android-sdk, with expo and flutter development infrastructure configured as well.

Build the Android SDK development container environment

The following steps will set up an Android build environment:

1. Seed android-sdk-manager container with an initial version of the Android SDK:

   docker compose build
   

   This will build the base 'android-sdk-manager' container as well create an unseeded 'android-dev-container'.

2. Transfer the AndroidSDK from android-sdk-manager to the host:

   Copy the sdk from the android-sdk-manager to the host to allow multiple containers to use the same base SDK, as well as to perform SDK updates, upgrades, and additional package installations.

   docker compose run -it --rm \
       -v $(realpath AndroidSDK):/sdk:rw \
       -v $(realpath scripts):/scripts:rw \
       android-sdk-manager \
       init
   

3. Install packages into SDK

   The android-sdk-manager container can then be used to update then ./AndroidSDK on the host to include additional packages.

   The following will install Android platform 35:

   ANDROID_PLATFORM=35
   docker compose run -it --rm \
       -v $(realpath AndroidSDK):/opt/android-sdk:rw \
       -v $(realpath scripts):/scripts:rw \
       android-sdk-manager -- \
       sdkmanager \
           "build-tools;${ANDROID_PLATFORM}.0.0" \
           "platforms;android-${ANDROID_PLATFORM}" \
           "platform-tools"
   

   At this point, ./AndroidSDK contains the latest SDK with the requested Android Platform version.

Seed a flutter repository

git clone https://github.com/flutter/flutter.git

To seed a new project (once per project)

PROJECT=foo
PROJECT_TYPE=expo # flutter
./seed.sh "${PROJECT_TYPE}" "${PROJECT}"

To develop

PROJECT=foo
PROJECT_TYPE=expo
./develop.sh "${PROJECT_TYPE}" "${PROJECT}"

To access the shell of the running project

PROJECT=foo
./shell.sh "${PROJECT}"

To stop development container

docker compose stop "${PROJECT}"

Things

To use virtual devices:

Build Eikona

./launch.sh eikona
./shell.sh eikona
./build.sh debug # release, or empty

Install base image

sdkmanager "system-images;android-35-ext14;google_apis_playstore;x86_64"

Create virtual device

avdmanager create avd \
    -n Pixel \
    -d pixel_6a \
    -k "system-images;android-35-ext14;google_apis_playstore;x86_64"

Emulator

Run the emulator

Launch the development container

./launch.sh eikona

Once the emulator is launched (see below), select the device (shift-a) then switch to debug build (s) and finally open the app (a).

Launch the emulator

./shell.sh eikona
./emulator.sh Pixel

Install the app

./shell.sh eikona
./install.sh debug # or release -- default debug

Add a new component

Shell in and add component

./shell.sh eikona
npx expo install react-pdf-viewer

To remove

./shell.sh eikona
npm remove react-pdf-viewer

Build the app

While in the shell previously launched, run the 'build' script:

./shell.sh eikona
./build.sh debug # release

Update the application launcher icon

Go to https://easyappicon.com/, drag the adaptive-icon.png to the app, reduce padding to -100%, then save.

Copy the ic-launcher/android/* files to android/app/src/main/res/

Rebuild the application.