Make sure you have a working flutter sdk setup. If not installed, go to Install - Flutter and select your platform, and follow the instructions to make sure you have all the right dependencies installed.

Once you get everything installed, test to see you didn't miss anything:

flutter doctor -v

Be sure to disable signing on build.gradle or create your own keystore to sign the app for android.

To make sure you are running latest version of flutter, run these commands:

$ flutter channel stable

$ flutter upgrade

After that, building is as simple as running these commands:

This is to grab app dependencies

$ flutter pub get

This is to make sure app runs

$ flutter run lib/main.dart

If you are unsure what target operating system, read further down

$ flutter build <target> --release

• apk: Build an Android APK file from app.
• appbundle: Build an Android App Bundle file from app (used for Google Play Store).
• aar: Build a repository containing an AAR and a POM file.
• bundle: Build the Flutter assets directory from app.

In other words, compiling can only be done on device you are compiling for (ex: an .exe requires windows)

• linux: Build a Linux desktop application.
• windows: Build a Windows desktop application.
  • Read this: https://github.com/espresso3389/pdfrx/tree/master/packages/pdfrx#note-for-windows
• macos: Build a MacOS desktop application.
  • ipa: Build an iOS App Store Package from app.

If you have docker installed you can run my script to automatically build APKs, here is how to use them:

change into scripts directory

cd scripts/

allow script to be executable

chmod +x docker-build.sh

run the script

./docker-build.sh

On completion you should have an outputs/ folder with 4 apk files (app-release, app-arm64-v8a-release, app-armeabi-v7a-release, and app-x86_64-release)

Note: This doesn't seem to affect other types of distros, or when running in android emulator

Running as a linux application on flutter version 3.24.0 (or newer) causes any TextFields to slows down or crash the app (ex. editing note, creating note/folder, searching, etc), best workaround currently is either disabling the "Enable the on-screen keyboard" option in Accessibilty > Keyboard, or wrapping all textfields with ExcludeSemantics widget, or downgrading to flutter version 3.22.3.