The application has been published onto the market for easy access:

Contributors

See Contributors Graph

Build the APK

• Make sure you have installed the Android SDK then:

• cd into seadroid directory

• Create key.properties file or simply rename key.properties.example and change configurations to match yours.

• Create keystore file if you don't have one

keytool -genkey -v -keystore app/debug.keystore -alias AndroidDebugKey -keyalg RSA -keysize 2048 -validity 1 -storepass android -keypass android -dname "cn=TEST, ou=TEST, o=TEST, c=TE"

• Build with ./gradlew assembleRelease

You will get app/build/outputs/apk/seafile-${versionName}.apk after the build finishes.

Build Native Libraries

The app uses native libraries for HEIC/HEIF image format support. Prebuilt libraries are included in app/src/main/cpp/libheif/, but if you need to rebuild them:

Prerequisites

macOS only (currently)

• macOS operating system
• Android NDK (r21 or later recommended)
• Command line tools:

  brew install cmake ninja pkg-config git
  brew install nasm  # Optional, for libjpeg-turbo optimization
  

Environment variables (optional, script will auto-detect):

export ANDROID_NDK_HOME=/path/to/ndk
# or
export ANDROID_NDK=/path/to/ndk
# or
export ANDROID_SDK_ROOT=/path/to/sdk

Build libheif and dependencies

Run the build script:

chmod +x build_libheif.sh
./build_libheif.sh

This will:

1. Download and compile the following libraries for Android (armeabi-v7a, arm64-v8a):
   • libjpeg-turbo - JPEG image codec
   • x265 - H.265/HEVC video encoder
   • libde265 - H.265/HEVC video decoder
   • libheif v1.20.2 - HEIF/HEIC image format support
2. Copy compiled libraries to app/src/main/cpp/libheif/lib/
3. Strip debug symbols to reduce size
4. Keep source code in libheif-android-build/src/ for future builds

Note: The build process may take 30-60 minutes depending on your system.

Manual build configuration

To customize the build, edit these variables in build_libheif.sh:

# Android API level (default: 28)
export ANDROID_API=28

# Target ABIs (default: armeabi-v7a, arm64-v8a)
ABIS=(
    "armeabi-v7a"
    "arm64-v8a"
)

# LibHeif version (default: v1.20.2)
LIBHEIF_VERSION="v1.20.2"

Output

After successful build, the following libraries will be available:

• app/src/main/cpp/libheif/lib/{ABI}/libheif.so
• app/src/main/cpp/libheif/lib/{ABI}/libde265.so
• app/src/main/cpp/libheif/lib/{ABI}/libx265.so
• app/src/main/cpp/libheif/lib/{ABI}/libjpeg.so

Where {ABI} is one of: armeabi-v7a, arm64-v8a

Develop in Android Studio

Prerequisites

• Android Studio
• OpenJDK 17 / OracleJDK 17

Import project

• Open Android Studio
• Import project
• Select seadroid directory
• Choose import from gradle
• Click next until import is completed

Develop in IntelliJ/Eclipse

For those who are using maven build structures, checkout the project from maven branch.

Internationalization

Contribute your translation

Please submit translations via Transifex:

Steps:

1. Visit the webpage of Transifex (https://explore.transifex.com/haiwen/seadroid/).

2. Click the "Join this project" button in the bottom right corner.

3. Use an email or GitHub account(recommended) to create an account.

4. Select a language and click 'Join project' to join the language translation.

5. After accepted by the project maintainer, then you can upload your file or translate online.