First approach, just using a utility class to restore activity graph. :)

app/build.gradle

@@ -1,9 +1,15 @@
 buildscript {
+  repositories {
+    mavenCentral()
+  }
+
   dependencies {
+    classpath 'com.jakewharton.hugo:hugo-plugin:1.2.1'
   }
 }
 
 apply plugin: 'com.android.application'
+apply plugin: 'com.jakewharton.hugo'
 
 def STRING = "String"
 def BOOLEAN = "boolean"

app/src/main/java/me/panavtec/cleancontacts/modules/detail/DetailActivity.java

@@ -6,8 +6,6 @@
 import android.widget.TextView;
 import butterknife.InjectView;
 import butterknife.OnClick;
-import java.util.Arrays;
-import java.util.List;
 import javax.inject.Inject;
 import me.panavtec.cleancontacts.R;
 import me.panavtec.cleancontacts.presentation.detail.DetailPresenter;
@@ -50,14 +48,28 @@ public class DetailActivity extends BaseActivity
 
   @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    coordinator = new Coordinator(this, COORDINATE_END_TRANSITION, COORDINATE_SHOW_CONTACT);
-    parseArguments();
     initTransitionElements();
-    initUi();
-    presenter.onCreate(contactMd5);
+    parseArguments();
+    presenter.onCreate(this);
+  }
+
+  @Override public int onCreateViewId() {
+    return R.layout.activity_detail;
+  }
+
+  @Override protected void onResume() {
+    super.onResume();
+    presenter.onResume();
+    presenter.obtainContact(contactMd5);
+  }
+
+  @Override protected void onPause() {
+    super.onPause();
+    presenter.onPause();
   }
 
   private void initTransitionElements() {
+    coordinator = new Coordinator(this, COORDINATE_END_TRANSITION, COORDINATE_SHOW_CONTACT);
     windowTransitionListener.setupListener(this);
     imageLoader.loadWithoutEffects(thumbnail, contactImageView);
     windowTransitionListener.start();
@@ -68,7 +80,7 @@ private void parseArguments() {
     thumbnail = getIntent().getStringExtra(CONTACT_THUMBNAIL_EXTRA);
   }
 
-  private void initUi() {
+  @Override public void initUi() {
     initToolbar();
   }
 
@@ -79,20 +91,6 @@ private void initToolbar() {
     }
   }
 
-  @Override public int onCreateViewId() {
-    return R.layout.activity_detail;
-  }
-
-  @Override protected void onResume() {
-    super.onResume();
-    presenter.onResume();
-  }
-
-  @Override protected void onPause() {
-    super.onPause();
-    presenter.onPause();
-  }
-
   @Override public void showContactData(PresentationContact contact) {
     this.contact = contact;
     coordinator.completeAction(COORDINATE_SHOW_CONTACT);
@@ -167,7 +165,7 @@ private void showAddress() {
     coordinator.completeAction(COORDINATE_END_TRANSITION);
   }
 
-  protected List<Object> getModules() {
-    return Arrays.<Object>asList(new DetailModule(this));
+  @Override protected Object newDiModule() {
+    return new DetailModule(this);
   }
 }

app/src/main/java/me/panavtec/cleancontacts/modules/main/MainActivity.java

@@ -11,7 +11,6 @@
 import com.carlosdelachica.easyrecycleradapters.adapter.EasyRecyclerAdapter;
 import com.carlosdelachica.easyrecycleradapters.adapter.EasyViewHolder;
 import com.carlosdelachica.easyrecycleradapters.recycler_view_manager.EasyRecyclerViewManager;
-import java.util.Arrays;
 import java.util.List;
 import javax.inject.Inject;
 import me.panavtec.cleancontacts.R;
@@ -26,7 +25,7 @@
 import me.panavtec.cleancontacts.ui.imageloader.ImageLoader;
 import me.panavtec.cleancontacts.ui.items.ContactViewHolder;
 
-public class MainActivity extends BaseActivity
+public class MainActivity extends BaseActivity<MainModule>
     implements MainView, SwipeRefreshLayout.OnRefreshListener, EasyViewHolder.OnItemClickListener {
 
   @Inject MainPresenter presenter;
@@ -43,11 +42,10 @@ public class MainActivity extends BaseActivity
 
   @Override protected void onCreate(Bundle savedInstanceState) {
     super.onCreate(savedInstanceState);
-    initUi();
-    presenter.onCreate();
+    presenter.onCreate(this);
   }
 
-  private void initUi() {
+  @Override public void initUi() {
     initToolbar();
     initRecyclerView();
     initRefreshLayout();
@@ -122,8 +120,9 @@ public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
     swipeRefreshLayout.setRefreshing(true);
   }
 
-  @Override protected List<Object> getModules() {
-    return Arrays.<Object>asList(new MainModule(this));
+
+  @Override protected MainModule newDiModule() {
+    return new MainModule(this);
   }
 
   @Override public void onItemClick(int position, View view) {
@@ -134,4 +133,5 @@ public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
             (TextView) view.findViewById(R.id.nameTextView));
     detailActionCommand.execute();
   }
+
 }

app/src/main/java/me/panavtec/cleancontacts/ui/BaseActivity.java

@@ -2,21 +2,51 @@
 
 import android.os.Bundle;
 import android.support.v7.app.ActionBarActivity;
+import android.util.Log;
 import butterknife.ButterKnife;
 import dagger.ObjectGraph;
+import hugo.weaving.DebugLog;
 import java.util.ArrayList;
 import java.util.List;
 import me.panavtec.cleancontacts.CleanContactsApp;
 import me.panavtec.cleancontacts.di.ActivityModule;
 
-public class BaseActivity extends ActionBarActivity {
+public abstract class BaseActivity<T> extends ActionBarActivity
+    implements ConfigurationHandler.ConfigurationHandlerListener {
 
   private ObjectGraph activityGraph;
+  private T diModule;
 
-  @Override protected void onCreate(Bundle savedInstanceState) {
-    activityGraph = new ActivityInjector(this).createGraph(getModules());
+  ConfigurationHandler configurationHandler = new ConfigurationHandler(this);
+
+  @Override public void destroyThemAll() {
+    activityGraph = null;
+  }
+
+  @DebugLog @Override protected void onStart() {
+    super.onStart();
+  }
+
+  @DebugLog @Override protected void onStop() {
+    super.onStop();
+  }
+
+  @DebugLog @Override protected void onCreate(Bundle savedInstanceState) {
+    createActivityModule();
     super.onCreate(savedInstanceState);
+    injectView();
+    configurationHandler.create();
+  }
 
+  @DebugLog @Override protected void onResume() {
+    super.onResume();
+  }
+
+  @DebugLog @Override protected void onPause() {
+    super.onPause();
+  }
+
+  private void injectView() {
     int layoutId = onCreateViewId();
     if (layoutId != 0) {
       setContentView(layoutId);
@@ -28,25 +58,33 @@ public int onCreateViewId() {
     return 0;
   }
 
-  @Override protected void onDestroy() {
-    activityGraph = null;
+  @DebugLog @Override protected void onDestroy() {
+    configurationHandler.destroy();
     super.onDestroy();
   }
 
   public ObjectGraph getActivityGraph() {
     return activityGraph;
   }
 
-  public void inject(Object obj) {
-    if (activityGraph != null) {
-      activityGraph.inject(obj);
+  private void createActivityModule() {
+    Object savedObjectGraph = getLastCustomNonConfigurationInstance();
+    Log.d("MainActivity", "graph: " + savedObjectGraph);
+    if (savedObjectGraph == null) {
+      diModule = newDiModule();
+      activityGraph = new ActivityInjector(this).createGraph(diModule);
+    } else {
+      activityGraph = (ObjectGraph) savedObjectGraph;
+      activityGraph.inject(this);
     }
   }
 
-  protected List<Object> getModules() {
-    return new ArrayList<>();
+  @Override public Object onRetainCustomNonConfigurationInstance() {
+    return activityGraph;
   }
 
+  protected abstract T newDiModule();
+
   static class ActivityInjector {
 
     private ActionBarActivity activity;
@@ -55,8 +93,10 @@ public ActivityInjector(ActionBarActivity activity) {
       this.activity = activity;
     }
 
-    public ObjectGraph createGraph() {
-      return createGraph(new ArrayList<>());
+    public ObjectGraph createGraph(Object module) {
+      ArrayList<Object> modules = new ArrayList<>();
+      modules.add(module);
+      return createGraph(modules);
     }
 
     public ObjectGraph createGraph(List<Object> modules) {

app/src/main/java/me/panavtec/cleancontacts/ui/ConfigurationHandler.java

@@ -0,0 +1,55 @@
+package me.panavtec.cleancontacts.ui;
+
+import android.os.Handler;
+import android.os.Message;
+import hugo.weaving.DebugLog;
+
+public class ConfigurationHandler {
+
+  private static final int MSG_REALLY_DESTROYED = 1;
+  private ConfigurationHandlerListener configurationHandlerListener;
+
+  static interface ConfigurationHandlerListener {
+    void destroyThemAll();
+  }
+
+  public ConfigurationHandler(ConfigurationHandlerListener configurationHandlerListener) {
+    this.configurationHandlerListener = configurationHandlerListener;
+  }
+
+  boolean mStopped;
+  boolean mReallyStopped;
+
+  Handler mHandler = new Handler() {
+    @DebugLog @Override public void handleMessage(Message msg) {
+      switch (msg.what) {
+        case MSG_REALLY_DESTROYED:
+          if (mStopped) {
+            doReallyDestroy();
+            mHandler = null;
+          }
+          break;
+      }
+    }
+  };
+
+  void doReallyDestroy() {
+    if (!mReallyStopped) {
+      mReallyStopped = true;
+      mHandler.removeMessages(MSG_REALLY_DESTROYED);
+      configurationHandlerListener.destroyThemAll();
+    }
+  }
+
+  public void destroy() {
+    mStopped = true;
+    mHandler.sendEmptyMessage(MSG_REALLY_DESTROYED);
+  }
+
+  public void create() {
+    mStopped = false;
+    mReallyStopped = false;
+    mHandler.removeMessages(MSG_REALLY_DESTROYED);
+  }
+
+}

presentation/src/main/java/me/panavtec/cleancontacts/presentation/detail/DetailPresenter.java

@@ -12,8 +12,8 @@ public class DetailPresenter extends Presenter {
   private final Bus bus;
   private final InteractorInvoker interactorInvoker;
   private final GetContactInteractor getContactInteractor;
-  private final DetailView detailView;
   private final PresentationContactMapper presentationContactMapper;
+  private DetailView detailView;
 
   public DetailPresenter(Bus bus, InteractorInvoker interactorInvoker,
       GetContactInteractor getContactInteractor, DetailView detailView, PresentationContactMapper presentationContactMapper) {
@@ -24,6 +24,11 @@ public DetailPresenter(Bus bus, InteractorInvoker interactorInvoker,
     this.presentationContactMapper = presentationContactMapper;
   }
 
+  public void onCreate(DetailView detailView) {
+    this.detailView = detailView;
+    detailView.initUi();
+  }
+
   @Override public void onResume() {
     bus.register(this);
   }
@@ -32,7 +37,7 @@ public DetailPresenter(Bus bus, InteractorInvoker interactorInvoker,
     bus.unregister(this);
   }
 
-  public void onCreate(String contactMd5) {
+  public void obtainContact(String contactMd5) {
     getContactInteractor.setData(contactMd5);
     interactorInvoker.execute(getContactInteractor);
   }

presentation/src/main/java/me/panavtec/cleancontacts/presentation/detail/DetailView.java

@@ -6,4 +6,6 @@ public interface DetailView {
   void showContactData(PresentationContact contact);
 
   void showGetContactError();
+
+  void initUi();
 }

presentation/src/main/java/me/panavtec/cleancontacts/presentation/main/MainPresenter.java

@@ -14,8 +14,8 @@ public class MainPresenter extends Presenter {
   private final Bus bus;
   private final InteractorInvoker interactorInvoker;
   private final GetContactsInteractor getContactsInteractor;
-  private final MainView mainView;
   private final ListMapper<Contact, PresentationContact> listMapper;
+  private MainView mainView;
 
   public MainPresenter(Bus bus, InteractorInvoker interactorInvoker,
       GetContactsInteractor getContactsInteractor, MainView mainView,
@@ -25,22 +25,28 @@ public MainPresenter(Bus bus, InteractorInvoker interactorInvoker,
     this.getContactsInteractor = getContactsInteractor;
     this.mainView = mainView;
     this.listMapper = listMapper;
+    System.out.println("MainActivity - Create Presenter");
   }
 
-  public void onCreate() {
-    interactorInvoker.execute(getContactsInteractor);
+  public void onCreate(MainView mainView) {
+    this.mainView = mainView;
+    mainView.initUi();
   }
 
   @Override public void onResume() {
     bus.register(this);
+    interactorInvoker.execute(getContactsInteractor);
+    System.out.println("MainActivity - Presenter - onResume");
   }
 
   @Override public void onPause() {
     bus.unregister(this);
   }
 
   public void onEvent(GetContactsEvent event) {
+    System.out.println("MainActivity - Presenter - onEvent");
     if (event.getError() == null) {
+      System.out.println("MainActivity - Presenter - onEvent - NoError");
       mainView.refreshContactsList(listMapper.modelToData(event.getContacts()));
     } else {
       mainView.showGetContactsError();