Enable the vertical scrollbar in recyclerView

collect_app/src/main/java/org/odk/collect/android/widgets/SelectWidget.java

@@ -18,9 +18,9 @@
 
 import android.content.Context;
 import android.support.v7.widget.DividerItemDecoration;
-import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.util.DisplayMetrics;
+import android.view.LayoutInflater;
 import android.widget.LinearLayout;
 import android.widget.TextView;
 
@@ -29,6 +29,7 @@
 import org.javarosa.form.api.FormEntryCaption;
 import org.javarosa.form.api.FormEntryPrompt;
 import org.javarosa.xpath.expr.XPathFuncExpr;
+import org.odk.collect.android.R;
 import org.odk.collect.android.activities.FormEntryActivity;
 import org.odk.collect.android.adapters.AbstractSelectListAdapter;
 import org.odk.collect.android.external.ExternalDataUtil;
@@ -162,9 +163,7 @@ public void addMediaFromChoice(MediaLayout mediaLayout, int index, TextView text
     }
 
     protected RecyclerView setUpRecyclerView() {
-        RecyclerView recyclerView = new RecyclerView(getContext());
-        recyclerView.setHasFixedSize(true);
-        recyclerView.setLayoutManager(new LinearLayoutManager(getContext()));
+        RecyclerView recyclerView = (RecyclerView) LayoutInflater.from(getContext()).inflate(R.layout.recycler_view, null); // keep in an xml file to enable the vertical scrollbar
         recyclerView.addItemDecoration(new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL));
 
         return recyclerView;

collect_app/src/main/res/layout/recycler_view.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2018 Nafundi
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+-->
+<android.support.v7.widget.RecyclerView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:scrollbars="vertical"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    app:layoutManager="android.support.v7.widget.LinearLayoutManager">
+
+</android.support.v7.widget.RecyclerView>