From b850b31f0407752c3cc24d79883cebf7040acd61 Mon Sep 17 00:00:00 2001
From: Hampton Maxwell <me@hamptonmaxwell.com>
Date: Wed, 20 Jun 2018 15:46:04 -0700
Subject: [PATCH] Return empty string instead of null if text track title or
 language are not set

---
 .../java/com/brentvatne/exoplayer/ReactExoplayerView.java     | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java b/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
index 04c4bb2c..3d4702fb 100644
--- a/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
+++ b/android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java
@@ -520,9 +520,9 @@ class ReactExoplayerView extends FrameLayout implements
              Format format = groups.get(i).getFormat(0);
              WritableMap textTrack = Arguments.createMap();
              textTrack.putInt("index", i);
-             textTrack.putString("title", format.id);
+             textTrack.putString("title", format.id != null ? format.id : "");
              textTrack.putString("type", format.sampleMimeType);
-             textTrack.putString("language", format.language);
+             textTrack.putString("language", format.language != null ? format.language : "");
              textTracks.pushMap(textTrack);
         }
         return textTracks;