title: Firestore CollectionGroup query not showing any result
body: <p>Im trying to make a search activity with firestore. This is my firestore structure.</p>
  <pre><code> /Collection/Document/Collection/Document(ID generated by firesotre)
   /Recipes/Food_Recipe/Rice_Recipe/5LlP3SZO27tL9IIlMhD2
  </code></pre>
  <p>And here is my java code,</p>
  <pre><code>Query query = FirebaseFirestore.getInstance()
              .collectionGroup(&quot;Recipes&quot;).orderBy(&quot;Recipe_name&quot;).startAt(InputSearchText).endAt(InputSearchText+&quot;\uf8ff&quot;);
   PagedList.Config config = new PagedList.Config.Builder()
              .setEnablePlaceholders(false)
              .setPrefetchDistance(2)
              .setInitialLoadSizeHint(2)
              .setPageSize(3)
              .build();
   FirestorePagingOptions&lt;FoodItems&gt; options = new FirestorePagingOptions.Builder&lt;FoodItems&gt;()
              .setQuery(query, config, FoodItems.class)
              .build();
  food_items_recycle_adapter = new Food_Items_Recycle_Adapter(options, progressIndicator,this);
      recyclerView.setHasFixedSize(true);
      recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
      recyclerView.setAdapter(food_items_recycle_adapter);
      food_items_recycle_adapter.notifyDataSetChanged();
      food_items_recycle_adapter.startListening();
  </code></pre>
  <p>And this is my single field index,
  <a href="https://i.stack.imgur.com/87PMp.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/87PMp.png" alt="enter image description here" /></a></p>
  <p>This is how i tried to get the result, But it does not show any result.</p>
  <p><strong>Edit</strong>
  I want to get the Document which Recipe_name start with InputSearchText</p>
  <hr />
  <p><strong>Edit</strong></p>
  <pre><code> 2020-09-21 11:59:24.560 26802-26802/com.example.thechef I/AssistStructure: Flattened final assist data: 5944 bytes, containing 1 windows, 26 views
  2020-09-21 11:59:24.665 26802-26802/com.example.thechef W/StaticLayout: maxLineHeight should not be -1.  maxLines:1 lineCount:1
   2020-09-21 11:59:24.689 26802-26802/com.example.thechef E/RecyclerView: No adapter attached; skipping layout
   2020-09-21 11:59:27.029 26802-26802/com.example.thechef D/Search_Fragment: onClick: InputSearchText is   badu
   2020-09-21 11:59:27.071 26802-26802/com.example.thechef D/Food_Items_Recycle_Adap: onLoadingStateChanged: loading initial pages
   2020-09-21 11:59:27.284 26802-26802/com.example.thechef D/Food_Items_Recycle_Adap: onLoadingStateChanged: Wholedata loaded
   2020-09-21 11:59:29.937 26802-26807/com.example.thechef I/zygote: Do partial code cache collection, code=111KB, data=98KB
   2020-09-21 11:59:29.937 26802-26807/com.example.thechef I/zygote: After code cache collection, code=111KB, data=98KB
   2020-09-21 11:59:29.937 26802-26807/com.example.thechef I/zygote: Increasing code cache capacity to 512KB
  </code></pre>
  <p>This is all I can see in the android studio logcat, when I type a text in inputEditText and press the search button.</p>