Do not refresh feeds more often than necessary

app/src/androidTest/java/de/test/antennapod/ui/UITestUtils.java

@@ -201,7 +201,7 @@ public class UITestUtils {
         adapter.setCompleteFeed(hostedFeeds.toArray(new Feed[hostedFeeds.size()]));
         adapter.setQueue(queue);
         adapter.close();
-        EventBus.getDefault().post(new FeedListUpdateEvent());
+        EventBus.getDefault().post(new FeedListUpdateEvent(hostedFeeds));
         EventBus.getDefault().post(QueueEvent.setQueue(queue));
     }
 

app/src/main/java/de/danoeh/antennapod/fragment/FeedItemlistFragment.java

@@ -409,7 +409,9 @@ public class FeedItemlistFragment extends ListFragment {
 
     @Subscribe(threadMode = ThreadMode.MAIN)
     public void onFeedListChanged(FeedListUpdateEvent event) {
-        updateUi();
+        if (event.contains(feed)) {
+            updateUi();
+        }
     }
 
     private void updateProgressBarVisibility() {

app/src/main/java/de/danoeh/antennapod/fragment/RunningDownloadsFragment.java

@@ -25,6 +25,7 @@ import de.danoeh.antennapod.core.storage.DBReader;
 import de.danoeh.antennapod.core.storage.DBWriter;
 import de.danoeh.antennapod.core.storage.DownloadRequester;
 import de.danoeh.antennapod.view.EmptyViewHandler;
+import org.greenrobot.eventbus.ThreadMode;
 
 /**
  * Displays all running downloads and provides actions to cancel them
@@ -75,7 +76,7 @@ public class RunningDownloadsFragment extends ListFragment {
         setListAdapter(null);
     }
 
-    @Subscribe(sticky = true)
+    @Subscribe(sticky = true, threadMode = ThreadMode.MAIN)
     public void onEvent(DownloadEvent event) {
         Log.d(TAG, "onEvent() called with: " + "event = [" + event + "]");
         DownloaderUpdate update = event.update;

core/src/main/java/de/danoeh/antennapod/core/event/FeedListUpdateEvent.java

@@ -1,6 +1,28 @@
 package de.danoeh.antennapod.core.event;
 
+import de.danoeh.antennapod.core.feed.Feed;
+
+import java.util.ArrayList;
+import java.util.List;
+
 public class FeedListUpdateEvent {
-    public FeedListUpdateEvent() {
+    private final List<Long> feeds = new ArrayList<>();
+
+    public FeedListUpdateEvent(List<Feed> feeds) {
+        for (Feed feed : feeds) {
+            this.feeds.add(feed.getId());
+        }
+    }
+
+    public FeedListUpdateEvent(Feed feed) {
+        feeds.add(feed.getId());
+    }
+
+    public FeedListUpdateEvent(long feedId) {
+        feeds.add(feedId);
+    }
+
+    public boolean contains(Feed feed) {
+        return feeds.contains(feed.getId());
     }
 }

core/src/main/java/de/danoeh/antennapod/core/storage/DBTasks.java

@@ -299,7 +299,7 @@ public final class DBTasks {
         media.setDownloaded(false);
         media.setFile_url(null);
         DBWriter.setFeedMedia(media);
-        EventBus.getDefault().post(new FeedListUpdateEvent());
+        EventBus.getDefault().post(new FeedListUpdateEvent(media.getItem().getFeed()));
     }
 
     /**
@@ -558,13 +558,13 @@ public final class DBTasks {
         adapter.close();
 
         try {
-            DBWriter.addNewFeed(context, newFeedsList.toArray(new Feed[newFeedsList.size()])).get();
+            DBWriter.addNewFeed(context, newFeedsList.toArray(new Feed[0])).get();
-            DBWriter.setCompleteFeed(updatedFeedsList.toArray(new Feed[updatedFeedsList.size()])).get();
+            DBWriter.setCompleteFeed(updatedFeedsList.toArray(new Feed[0])).get();
         } catch (InterruptedException | ExecutionException e) {
             e.printStackTrace();
         }
 
-        EventBus.getDefault().post(new FeedListUpdateEvent());
+        EventBus.getDefault().post(new FeedListUpdateEvent(updatedFeedsList));
 
         return resultFeeds;
     }

core/src/main/java/de/danoeh/antennapod/core/storage/DBWriter.java

@@ -173,7 +173,7 @@ public class DBWriter {
                 if (ClientConfig.gpodnetCallbacks.gpodnetEnabled()) {
                     GpodnetPreferences.addRemovedFeed(feed.getDownload_url());
                 }
-                EventBus.getDefault().post(new FeedListUpdateEvent());
+                EventBus.getDefault().post(new FeedListUpdateEvent(feed));
 
                 // we assume we also removed download log entries for the feed or its media files.
                 // especially important if download or refresh failed, as the user should not be able
@@ -803,7 +803,7 @@ public class DBWriter {
             adapter.open();
             adapter.setFeedPreferences(preferences);
             adapter.close();
-            EventBus.getDefault().post(new FeedListUpdateEvent());
+            EventBus.getDefault().post(new FeedListUpdateEvent(preferences.getFeedID()));
         });
     }
 
@@ -842,7 +842,7 @@ public class DBWriter {
             adapter.open();
             adapter.setFeedCustomTitle(feed.getId(), feed.getCustomTitle());
             adapter.close();
-            EventBus.getDefault().post(new FeedListUpdateEvent());
+            EventBus.getDefault().post(new FeedListUpdateEvent(feed));
         });
     }