fcitx5-android

Fcitx5 input method framework and engines ported to Android.

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Supported Languages

• English (with spell check)
• Chinese
  • Pinyin, Shuangpin, Wubi, Cangjie and custom tables (built-in, powered by fcitx5-chinese-addons)
  • Zhuyin/Bopomofo (via Chewing Plugin)
  • Jyutping (via Jyutping Plugin, powered by libime-jyutping)
• Vietnamese (via UniKey Plugin, supports Telex, VNI and VIQR)
• Japanese (via Anthy Plugin)
• Korean (via Hangul Plugin)
• Sinhala (via Sayura Plugin)
• Thai (via Thai Plugin)
• Generic (via RIME Plugin, supports importing custom schemas)

Implemented Features

• Virtual Keyboard (layout not customizable yet)
• Expandable candidate view
• Clipboard management (plain text only)
• Theming (custom color scheme and background image)
• Popup preview on key press
• Long press popup keyboard for convenient symbol input
• Symbol and Emoji picker
• Plugin System for loading addons from other installed apk

Planned Features

• Customizable keyboard layout
• More input methods (via plugin)

Screenshots

拼音, Material Light theme, key border enabled	自然码双拼, Pixel Dark theme, key border disabled

Emoji picker, Pixel Light theme, key border enabled	Symbol picker, Material Dark theme, key border disabled

Get involved

Trello kanban: https://trello.com/b/gftk6ZdV/kanban

Matrix Room: https://matrix.to/#/#fcitx5-android:mozilla.org

Discuss on Telegram: @fcitx5_android_group (@fcitx5_android originally)

Build

Dependencies

• Android SDK Platform & Build-Tools 34.
• Android NDK (Side by side) 25 & CMake 3.22.1, they can be installed using SDK Manager in Android Studio or sdkmanager command line.
• KDE/extra-cmake-modules
• GNU Gettext >= 0.20 (for msgfmt binary; or install appstream if you really have to use gettext <= 0.19.)

How to set up development environment

Prerequisites for Windows

• Enable Developer Mode so that symlinks can be created without administrator privilege.

• Enable symlink support for git:

  git config --global core.symlinks true

First, clone this repository and fetch all submodules:

git clone git@github.com:fcitx5-android/fcitx5-android.git
git submodule update --init --recursive

On Windows, you may need to regenerate symlinks to submodules.

Run in PowerShell:

Remove-Item -Recurse app/src/main/assets/usr/share, plugin/hangul/src/main/assets/usr/share/libhangul, plugin/chewing/src/main/assets/usr/share/libchewing, plugin/jyutping/src/main/assets/usr/share/libime

Or Command Prompt:

RD /S /Q app\src\main\assets\usr\share plugin\hangul\src\main\assets\usr\share\libhangul plugin\chewing\src\main\assets\usr\share\libchewing plugin\jyutping\src\main\assets\usr\share\libime

Then let git regenerate symlinks:

git checkout -- .

Install extra-cmake-modules and gettext with your system package manager:

# For Arch Linux (Arch has gettext in it's base meta package)
sudo pacman -S extra-cmake-modules

# For Debian/Ubuntu
sudo apt install extra-cmake-modules gettext

# For macOS
brew install extra-cmake-modules gettext

# For Windows, install MSYS2 and execute in its shell (UCRT64)
pacman -S mingw-w64-ucrt-x86_64-extra-cmake-modules mingw-w64-ucrt-x86_64-gettext
# then add C:\msys64\ucrt64\bin to PATH

Install Android SDK Platform, Android SDK Build-Tools, Android NDK and cmake via SDK Manager in Android Studio:

Detailed steps (screenshots)

Note: These screenshots are for references and the versions in them may be out of date. The current recommended versions are recorded in Versions.kt file.

Trouble-shooting

• Android Studio indexing takes forever to complete and cosumes a lot of memory.

  Switch to "Project" view in the "Project" tool window (namely the file tree side bar), right click lib/fcitx5/src/main/cpp/prebuilt directory, then select "Mark Directory as > Excluded". You may also need to restart the IDE to interrupt ongoing indexing process.

• Gradle error: "No variants found for ':app'. Check build files to ensure at least one variant exists." or "[CXX1210] /CMakeLists.txt debug|arm64-v8a : No compatible library found"

  Examine if there are environment variables set such as _JAVA_OPTIONS or JAVA_TOOL_OPTIONS. You might want to clear them (maybe in the startup script studio.sh of Android Studio), as some gradle plugin treats anything in stderr as errors and aborts.

Nix

Appropriate Android SDK with NDK is available in the development shell. The gradlew should work out-of-the-box, so you can install the app to your phone with ./gradlew installDebug after applying the patch mentioned above. For development, you may want to install the unstable version of Android Studio, and point the project SDK path to $ANDROID_SDK_ROOT defined in the shell. Notice that Android Studio may generate wrong local.properties which sets the SDK location to ~/Android/SDK (installed by SDK Manager). In such case, you need specify sdk.dir as the project SDK in that file manually, in case Android Studio sticks to the wrong global SDK.