Move indexing into the Search Fragment

Cold start latency for Settings increased drastically
from the indexing of the Search Database. Moving it into
the Search Fragment moves that latency to cases where
users are actually searching.

Change-Id: I11368af610ac9e80f9901654f980c2c1e26342a5
Fixes: 34142852
Test: make RunSettingsRoboTests

src/com/android/settings/search2/SearchFragment.java

@@ -26,6 +26,7 @@ import android.support.annotation.VisibleForTesting;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.text.TextUtils;
+import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -34,6 +35,7 @@ import android.widget.SearchView;
 
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
+import com.android.settings.Utils;
 import com.android.settings.core.InstrumentedFragment;
 import com.android.settings.core.instrumentation.MetricsFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
@@ -92,10 +94,19 @@ public class SearchFragment extends InstrumentedFragment implements
             loaderManager.initLoader(LOADER_ID_DATABASE, null, this);
             loaderManager.initLoader(LOADER_ID_INSTALLED_APPS, null, this);
         }
-        final ActionBar actionBar = getActivity().getActionBar();
+
+        final Activity activity = getActivity();
+        final ActionBar actionBar = activity.getActionBar();
         actionBar.setCustomView(makeSearchView(actionBar, mQuery));
         actionBar.setDisplayShowCustomEnabled(true);
         actionBar.setDisplayShowTitleEnabled(false);
+
+        // Run the Index update only if we have some space
+        if (!Utils.isLowStorage(activity)) {
+            mSearchFeatureProvider.updateIndex(activity);
+        } else {
+            Log.w(TAG, "Cannot update the Indexer as we are running low on storage space!");
+        }
     }
 
     @Override