PoC: Don't rebuild the OG on conf change

app/src/main/java/org/bspeice/minimalbible/activity/downloader/DownloadActivity.java

@@ -4,6 +4,7 @@ import android.os.Bundle;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.widget.DrawerLayout;
 import android.support.v7.app.ActionBar;
+import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
 
@@ -47,8 +48,20 @@ public class DownloadActivity extends BaseActivity implements
      */
     private void buildObjGraph() {
         if (daObjectGraph == null) {
-            daObjectGraph = MinimalBible.get(this)
+            FragmentManager fM = getSupportFragmentManager();
-                    .plus(new DownloadActivityModules(this));
+            DownloadOGHolder ogHolder = (DownloadOGHolder) fM.findFragmentByTag("OG_HOLDER");
+            if (ogHolder == null) {
+                Log.e("DownloadActivity", "Creating new holder...");
+                ogHolder = new DownloadOGHolder();
+                daObjectGraph = MinimalBible.get(this)
+                        .plus(new DownloadActivityModules(this));
+                ogHolder.persistObjectGraph(daObjectGraph);
+                fM.beginTransaction().add(ogHolder, "OG_HOLDER").commit();
+            } else {
+                Log.e("DownloadActivity", "Found existing holder...");
+                daObjectGraph = ogHolder.fetchObjectGraph();
+                daObjectGraph.inject(this);
+            }
         }
         daObjectGraph.inject(this);
     }
@@ -62,7 +75,8 @@ public class DownloadActivity extends BaseActivity implements
 	@Override
 	protected void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
-        buildObjGraph();
+        inject(this);
+
 		setContentView(R.layout.activity_download);
 
 		mNavigationDrawerFragment = (DownloadNavDrawerFragment) getSupportFragmentManager()

app/src/main/java/org/bspeice/minimalbible/activity/downloader/DownloadActivityModules.java

@@ -37,7 +37,8 @@ import de.devland.esperandro.Esperandro;
                 DownloadActivity.class,
                 InstalledManager.class
         },
-        addsTo = MinimalBibleModules.class
+        addsTo = MinimalBibleModules.class,
+        library = true
 )
 public class DownloadActivityModules {
     DownloadActivity activity;
@@ -102,4 +103,9 @@ public class DownloadActivityModules {
     Collection<Installer> provideInstallers() {
         return new InstallManager().getInstallers().values();
     }
+
+    @Provides @Singleton
+    RefreshManager provideRefreshManager() {
+        return new RefreshManager(activity);
+    }
 }

app/src/main/java/org/bspeice/minimalbible/activity/downloader/DownloadNavDrawerFragment.java

@@ -1,6 +1,7 @@
 package org.bspeice.minimalbible.activity.downloader;
 
 import android.os.Bundle;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;

app/src/main/java/org/bspeice/minimalbible/activity/downloader/DownloadOGHolder.java

@@ -0,0 +1,28 @@
+package org.bspeice.minimalbible.activity.downloader;
+
+import android.os.Bundle;
+import android.support.v4.app.Fragment;
+
+import dagger.ObjectGraph;
+
+/**
+ * Created by bspeice on 7/21/14.
+ */
+public class DownloadOGHolder extends Fragment {
+
+    ObjectGraph holder;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setRetainInstance(true);
+    }
+
+    public void persistObjectGraph(ObjectGraph holder) {
+        this.holder = holder;
+    }
+
+    public ObjectGraph fetchObjectGraph() {
+        return this.holder;
+    }
+}