Fast Android Development. - Free

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  • Fast Android Development. Easy maintenance.

    AndroidAnnotations is an Open Source framework that speeds up Android development. It takes care of the plumbing, and lets you concentrate on what's really important. By simplifying your code, it facilitates its maintenance.



    We want to facilitate the writing and the maintenance of Android applications.

    We believe that simple code with clear intents is the best way to achieve those goals.

    Robert C. Martin wrote:

    The ratio of time spent reading [code] versus writing is well over 10 to 1 [therefore] making it easy to read makes it easier to write.

    While we all enjoy developing Android applications, we often wonder: Why do we always need to write the same code over and over? Why are our apps harder and harder to maintain? Context and Activity god objects, complexity of juggling with threads, hard to discover API, loads of anonymous listener classes, tons of unneeded casts... can't we improve that?


    Using Java annotations, developers can show their intent and let AndroidAnnotations generate the plumbing code at compile time.


    • Dependency injection: inject views, extras, system services, resources, ...
    • Simplified threading model: annotate your methods so that they execute on the UI thread or on a background thread.
    • Event binding: annotate methods to handle events on views, no more ugly anonymous listener classes!
    • REST client: create a client interface, AndroidAnnotations generates the implementation.
    • No magic: As AndroidAnnotations generate subclasses at compile time, you can check the code to see how it works.
    • AndroidAnnotations provide those good things and even more for less than 50kb, without any runtime 

    Is your Android code easy to write, read, and maintain?

    Look at that:

    @EActivity(R.layout.translate) // Sets content view to R.layout.translate
    public class TranslateActivity extends Activity {
        @ViewById // Injects
        EditText textInput;
        @ViewById( // Injects
        TextView result;
        @AnimationRes // Injects android.R.anim.fade_in
        Animation fadeIn;
        @Click // When button is clicked 
        void doTranslate() {
        @Background // Executed in a background thread
        void translateInBackground(String textToTranslate) {
             String translatedText = callGoogleTranslate(textToTranslate);
        @UiThread // Executed in the ui thread
        void showResult(String translatedText) {
        // [...]

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