Toothpick: sample Module

RepositoryModule.java

public final class RepositoryModule extends Module {

    public RepositoryModule(Context context) {
        SharedPreferences sharedPreferences = context.getSharedPreferences("app.prefs", MODE_PRIVATE);
        bind(SharedPreferences.class).toInstance(sharedPreferences);

        bind(UserRepository.class)
                .to(PrefUserRepository.class)
                .singleton();
    }
}