Check out ObjectBox

    Check out our new mobile database ObjectBox (GitHub repo).

    ObjectBox is a superfast object-oriented database with strong relation support. ObjectBox is embedded into your Android, Linux, macOS, or Windows app.


    greenDAO is a light & fast ORM for Android that maps objects to SQLite databases. Being highly optimized for Android, greenDAO offers great performance and consumes minimal memory.

    Home page, documentation, and support links:

    Build Status Follow greenrobot on Twitter


    greenDAO's unique set of features:

    • Rock solid: greenDAO has been around since 2011 and is used by countless famous apps
    • Super simple: concise and straight-forward API, in V3 with annotations
    • Small: The library is <150K and it's just plain Java jar (no CPU dependent native parts)
    • Fast: Probably the fastest ORM for Android, driven by intelligent code generation
    • Safe and expressive query API: QueryBuilder uses property constants to avoid typos
    • Powerful joins: query across entities and even chain joins for complex relations
    • Flexible property types: use custom classes or enums to represent data in your entity
    • Encryption: supports SQLCipher encrypted databases

    Add greenDAO to your project

    greenDAO is available on Maven Central. Please ensure that you are using the latest versions of the greendao and greendao-gradle-plugin artifact.

    Add the following Gradle configuration to your Android project. In your root build.gradle file:

    buildscript {
        repositories {
            mavenCentral() // add repository
        dependencies {
            classpath ''
            classpath 'org.greenrobot:greendao-gradle-plugin:3.3.0' // add plugin

    In your app modules app/build.gradle file:

    apply plugin: ''
    apply plugin: 'org.greenrobot.greendao' // apply plugin
    dependencies {
        implementation 'org.greenrobot:greendao:3.3.0' // add library

    Note that this hooks up the greenDAO Gradle plugin to your build process. When you build your project, it generates classes like DaoMaster, DaoSession and DAOs.

    Continue at the Getting Started page.

    R8, ProGuard

    If your project uses R8 or ProGuard add the following rules:

    -keepclassmembers class * extends org.greenrobot.greendao.AbstractDao {
    public static java.lang.String TABLENAME;
    -keep class **$Properties { *; }
    # If you DO use SQLCipher:
    -keep class org.greenrobot.greendao.database.SqlCipherEncryptedHelper { *; }
    # If you do NOT use SQLCipher:
    -dontwarn net.sqlcipher.database.**
    # If you do NOT use RxJava:
    -dontwarn rx.**

    Homepage, Documentation, Links

    For more details on greenDAO please check greenDAO's website. Here are some direct links you may find useful:


    Getting Started



    Technical FAQ

    Non-Technical FAQ

    Migrating to greenDAO 3

    More Open Source by greenrobot

    ObjectBox is a new superfast object-oriented database for mobile.

    EventBus is a central publish/subscribe bus for Android with optional delivery threads, priorities, and sticky events. A great tool to decouple components (e.g. Activities, Fragments, logic components) from each other.

    Essentials is a set of utility classes and hash functions for Android & Java projects.


    🚀 Github 镜像仓库 🚀


    发行版本 8

    greenDAO 3.3.0


    贡献者 9


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