Back button collapses search view

app/src/main/java/com/todoroo/astrid/activity/MainActivity.java

@@ -421,7 +421,7 @@ public class MainActivity extends InjectingAppCompatActivity
       } else {
         taskEditFragment.discardButtonClick();
       }
-    } else {
+    } else if (!getTaskListFragment().collapseSearchView()) {
       finish();
     }
   }

app/src/main/java/com/todoroo/astrid/activity/TaskListFragment.java

@@ -149,6 +149,7 @@ public final class TaskListFragment extends InjectingFragment
   private PublishSubject<String> searchSubject = PublishSubject.create();
   private Disposable searchDisposable;
   protected CompositeDisposable disposables;
+  private MenuItem search;
 
   /*
    * ======================================================================
@@ -282,7 +283,7 @@ public final class TaskListFragment extends InjectingFragment
     MenuItem voice = menu.findItem(R.id.menu_voice_add);
     voice.setVisible(device.voiceInputAvailable());
 
-    MenuItem search =
+    search =
         menu.findItem(R.id.menu_search)
             .setOnActionExpandListener(
                 new MenuItem.OnActionExpandListener() {
@@ -505,6 +506,10 @@ public final class TaskListFragment extends InjectingFragment
     }
   }
 
+  boolean collapseSearchView() {
+    return search.collapseActionView();
+  }
+
   /**
    * Called by the RefreshReceiver when the task list receives a refresh broadcast. Subclasses
    * should override this.