Fix searchbar divider

app/src/main/java/com/hippo/ehviewer/widget/SearchBar.java

@@ -83,6 +83,7 @@ public class SearchBar extends MaterialCardView implements View.OnClickListener,
     private SearchEditText mEditText;
     private EasyRecyclerView mListView;
     private View mListContainer;
+    private View mListHeader;
 
     private ViewTransition mViewTransition;
 
@@ -124,6 +125,7 @@ public class SearchBar extends MaterialCardView implements View.OnClickListener,
         mEditText = (SearchEditText) ViewUtils.$$(this, R.id.search_edit_text);
         mListContainer = ViewUtils.$$(this, R.id.list_container);
         mListView = (EasyRecyclerView) ViewUtils.$$(mListContainer, R.id.search_bar_list);
+        mListHeader = ViewUtils.$$(mListContainer, R.id.list_header);
 
         mViewTransition = new ViewTransition(mTitleTextView, mEditText);
 
@@ -146,12 +148,19 @@ public class SearchBar extends MaterialCardView implements View.OnClickListener,
                 LinearDividerItemDecoration.VERTICAL,
                 AttrResources.getAttrColor(context, R.attr.dividerColor),
                 LayoutUtils.dp2pix(context, 1));
-        decoration.setShowFirstDivider(true);
         decoration.setShowLastDivider(false);
         mListView.addItemDecoration(decoration);
         mListView.setLayoutManager(layoutManager);
     }
 
+    private void addListHeader() {
+        mListHeader.setVisibility(VISIBLE);
+    }
+
+    private void removeListHeader() {
+        mListHeader.setVisibility(GONE);
+    }
+
     private void updateSuggestions() {
         updateSuggestions(true);
     }
@@ -188,6 +197,11 @@ public class SearchBar extends MaterialCardView implements View.OnClickListener,
         }
 
         mSuggestionList = suggestions;
+        if (mSuggestionList.size() == 0) {
+            removeListHeader();
+        } else {
+            addListHeader();
+        }
         mSuggestionAdapter.notifyDataSetChanged();
 
         if (scrollToTop) {