Androidアプリ開発でDIのDagger2の使用方法 ref: http://qiita.com/kiimiiis/items/20c3fa79988ed3ccb3c9

build.gradle

dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    compile 'com.android.support:appcompat-v7:21.0.3'

    compile 'com.google.dagger:dagger:2.0'
    apt 'com.google.dagger:dagger-compiler:2.0'
    provided 'org.glassfish:javax.annotation:10.0-b28'
}

CRecipientRepository.java

@Component(modules = RecipientRepositoryModule.class)
public interface CRecipientRepository {
    IRecipientRepository maker();
}

IRecipientRepository

public interface IRecipientRepository {

    public void insert(String name, String email);

    public Recipient getRecipient(long id);

}

MockRecipientRepository.java

public class MockRecipientRepository implements IRecipientRepository {
    public void insert(String name, String email) {
       //Mock
    }

    /**
     *  宛先オブジェクトを返すモック
     */
    public Recipient getRecipient(long id) {
        Recipient recipient   = new Recipient();
        recipient.id          = 100L;
        recipient.email       = "mock@mock.jp";
        recipient.name        = "name";
        recipient.is_delivery = 1;

        return recipient;
    }

}

NewRecipient.java

public class  NewRecipient extends AppCompatActivity {

    @Inject IRecipientRepository recipientRepository;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_new_recipient);

        this.recipientRepository = DaggerCRecipientRepository.create().maker();
        this.recipientRepository.insert("テスト", "test01@android.com");
        Recipient recipient = this.recipientRepository.getRecipient(1L);
        Log.d("DB",recipient.email);
    }
}

RecipientRepository

public class RecipientRepository implements IRecipientRepository{

    /**
     * Recipientテーブルにインサート
     *
     * @param String name  氏名
     * @param String email メールアドレス
     */
    public void insert(String name, String email) {
        Recipient recipient   = new Recipient();
        recipient.name        = name;
        recipient.email       = email;
        recipient.is_delivery = 1;
        recipient.save();
    }

    /**
     * プライマリーキーで宛先テーブルを検索して取得
     *
     * @param Long _id ID
     *
     * @return Recipient recipient Recipientオブジェクト
     */
    public Recipient getRecipient(long id) {
        Recipient recipient = SQLite.select().from(Recipient.class)
            .where(Recipient_Table.id.eq(id)).and(Recipient_Table.is_delivery.eq(1)).querySingle();

        String query = SQLite.select().from(Recipient.class)
            .where(Recipient_Table.id.eq(id)).and(Recipient_Table.is_delivery.eq(1)).getQuery();

        Log.d("DbQuery", query);
        return recipient;
    }
}

RecipientRepositoryModule

@Module
public class RecipientRepositoryModule {
    @Provides
    public IRecipientRepository provideRecipientRepository() {
        return new RecipientRepository();       //DB使用
        //return new MockRecipientRepository(); //モック
    }
}