Fix topic-play-expanded-list (#316)

oppia · Nov 7, 2019 · 4f6476a · 4f6476a
1 parent a9d3e63
commit 4f6476a
Showing 1 changed file with 5 additions and 2 deletions.
diff --git a/app/src/main/java/org/oppia/app/topic/play/TopicPlayFragment.kt b/app/src/main/java/org/oppia/app/topic/play/TopicPlayFragment.kt
@@ -24,7 +24,10 @@ class TopicPlayFragment : InjectableFragment(), ExpandedChapterListIndexListener
 
   override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
     if (savedInstanceState != null) {
-      currentExpandedChapterListIndex = savedInstanceState.getInt(KEY_CURRENT_EXPANDED_LIST_INDEX)
+      currentExpandedChapterListIndex = savedInstanceState.getInt(KEY_CURRENT_EXPANDED_LIST_INDEX, -1)
+      if (currentExpandedChapterListIndex == -1) {
+        currentExpandedChapterListIndex = null
+      }
     }
     return topicPlayFragmentPresenter.handleCreateView(
       inflater,
@@ -36,7 +39,7 @@ class TopicPlayFragment : InjectableFragment(), ExpandedChapterListIndexListener
 
   override fun onSaveInstanceState(outState: Bundle) {
     super.onSaveInstanceState(outState)
-    if(currentExpandedChapterListIndex!=null) {
+    if (currentExpandedChapterListIndex != null) {
       outState.putInt(KEY_CURRENT_EXPANDED_LIST_INDEX, currentExpandedChapterListIndex!!)
     }
   }