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)
• Vietnamese (Based on UniKey, supports Telex, VNI and VIQR)
• Japanese (via Anthy Plugin)

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: https://t.me/+hci-DrFVWUM3NTUx (@fcitx5_android originally)

Build

Dependencies

• Android SDK Platform & Build-Tools 33.
• Android NDK (Side by side) 25 & CMake 3.22.1, they can be installed using SDK Manager in Android Studio or sdkmanager command line. Note: NDK 21 & 22 are confirmed not working with this project.
• 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

First, clone this repository and fetch all submodules:

git clone [email protected]:fcitx5-android/fcitx5-android.git
git submodule update --init --recursive

Install extra-cmake-modules from your distribution software repository:

# 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

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

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."

  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.