Only allow menu invalidations from active fragment

Fixes #2081

2 files changed, 17 insertions, 10 deletions

diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
index ab8808093..bbfd1688d 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/AllEpisodesFragment.java
@@ -80,6 +80,7 @@ public class AllEpisodesFragment extends Fragment {
     private boolean viewsCreated = false;
 
     private boolean isUpdatingFeeds;
+    protected boolean isMenuInvalidationAllowed = false;
 
     protected Subscription subscription;
     private LinearLayoutManager layoutManager;
@@ -430,7 +431,7 @@ public class AllEpisodesFragment extends Fragment {
         Log.d(TAG, "onEventMainThread() called with: " + "event = [" + event + "]");
         DownloaderUpdate update = event.update;
         downloaderList = update.downloaders;
-        if (isUpdatingFeeds != update.feedIds.length > 0) {
+        if (isMenuInvalidationAllowed && isUpdatingFeeds != update.feedIds.length > 0) {
                 getActivity().supportInvalidateOptionsMenu();
         }
         if(listAdapter != null && update.mediaIds.length > 0) {
diff --git a/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java b/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
index f23981935..e2fbd91f3 100644
--- a/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
+++ b/app/src/main/java/de/danoeh/antennapod/fragment/EpisodesFragment.java
@@ -79,6 +79,11 @@ public class EpisodesFragment extends Fragment {
     public static class EpisodesPagerAdapter extends FragmentPagerAdapter {
 
         private final Resources resources;
+        private AllEpisodesFragment[] fragments = {
+                new NewEpisodesFragment(),
+                new AllEpisodesFragment(),
+                new FavoriteEpisodesFragment()
+        };
 
         public EpisodesPagerAdapter(FragmentManager fm, Resources resources) {
             super(fm);
@@ -87,15 +92,7 @@ public class EpisodesFragment extends Fragment {
 
         @Override
         public Fragment getItem(int position) {
-            switch (position) {
-                case POS_ALL_EPISODES:
-                    return new AllEpisodesFragment();
-                case POS_NEW_EPISODES:
-                    return new NewEpisodesFragment();
-                case POS_FAV_EPISODES:
-                    return new FavoriteEpisodesFragment();
-            }
-            return null;
+            return fragments[position];
         }
 
         @Override
@@ -116,5 +113,14 @@ public class EpisodesFragment extends Fragment {
                     return super.getPageTitle(position);
             }
         }
+
+        @Override
+        public void setPrimaryItem(ViewGroup container, int position, Object object) {
+            super.setPrimaryItem(container, position, object);
+            for (int i = 0; i < TOTAL_COUNT; i++) {
+                // Invalidating the OptionsMenu is only allowed for the currently active fragment
+                fragments[i].isMenuInvalidationAllowed = (i == position);
+            }
+        }
     }
 }