OpenBoard

100% FOSS keyboard, based on AOSP.

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You can use this tool to create a dictionary. You need a wordlist, as described here. The output .dict file must be put in res/raw.

Make your modifications in tools/make-keyboard-text/src/main/resources/values-YOUR LOCALE.

Generate the new version of KeyboardTextsTable.java:

./gradlew tools:make-keyboard-text:makeText

Install java:

sudo pacman -S jdk11-openjdk jre11-openjdk jre11-openjdk-headless

Install Android SDK:

sudo pacman -S snapd
sudo snap install androidsdk

Configure your SDK location in your ~/.bash_profile or ~/.bashrc:

export ANDROID_SDK_ROOT=~/snap/androidsdk/current/AndroidSDK/

Compile the project. This will install all dependencies, make sure to accept licenses when prompted.

./gradlew assembleDebug

Connect your phone and install the debug APK

adb install ./app/build/outputs/apk/debug/app-debug.apk