Only show tips for subscription if no watched tags

app/src/main/java/com/hippo/ehviewer/client/parser/GalleryListParser.java

@@ -64,6 +64,7 @@ public class GalleryListParser {
     public static class Result {
         public int pages;
         public int nextPage;
+        public boolean noWatchedTags;
         public List<GalleryInfo> galleryInfoList;
     }
 
@@ -282,6 +283,7 @@ public class GalleryListParser {
             }
         } catch (Throwable e) {
             ExceptionUtils.throwIfFatal(e);
+            result.noWatchedTags = body.contains("<p>You do not have any watched tags");
             if (body.contains("No hits found</p>")) {
                 result.pages = 0;
                 //noinspection unchecked

app/src/main/java/com/hippo/ehviewer/ui/scene/GalleryListScene.java

@@ -1453,8 +1453,7 @@ public final class GalleryListScene extends BaseScene
     private void onGetGalleryListSuccess(GalleryListParser.Result result, int taskId) {
         if (mHelper != null && mSearchBarMover != null &&
                 mHelper.isCurrentTask(taskId)) {
-            // TODO tell the difference between no result and subscribed tags
-            String emptyString = getResources2().getString(mUrlBuilder.getMode() == ListUrlBuilder.MODE_SUBSCRIPTION
+            String emptyString = getResources2().getString(mUrlBuilder.getMode() == ListUrlBuilder.MODE_SUBSCRIPTION && result.noWatchedTags
                     ? R.string.gallery_list_empty_hit_subscription
                     : R.string.gallery_list_empty_hit);
             mHelper.setEmptyString(emptyString);