From ab273ed1b5bc75610f8907b6ce63a14eaa722dd7 Mon Sep 17 00:00:00 2001
From: Gerardo Pacheco <gerardo@lingokids.com>
Date: Wed, 25 Jul 2018 10:24:48 +0200
Subject: [PATCH] Android: MediaPlayer - Prevent screen from dimming, check for
 activity

---
 .../java/com/brentvatne/react/ReactVideoView.java   | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/android/src/main/java/com/brentvatne/react/ReactVideoView.java b/android/src/main/java/com/brentvatne/react/ReactVideoView.java
index a8cd590c..c3b52f02 100644
--- a/android/src/main/java/com/brentvatne/react/ReactVideoView.java
+++ b/android/src/main/java/com/brentvatne/react/ReactVideoView.java
@@ -508,20 +508,25 @@ public class ReactVideoView extends ScalableVideoView implements MediaPlayer.OnP
             return;
         }
 
+        Activity activity = mThemedReactContext.getCurrentActivity();
+        if (activity == null) {
+            return;
+        }
+
         if (state) {
-            mThemedReactContext.getCurrentActivity().runOnUiThread(new Runnable() {
+            activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
-                    mThemedReactContext.getCurrentActivity().getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
                 }
             });
         }
         
         if (!state) {
-            mThemedReactContext.getCurrentActivity().runOnUiThread(new Runnable() {
+            activity.runOnUiThread(new Runnable() {
                 @Override
                 public void run() {
-                    mThemedReactContext.getCurrentActivity().getWindow().clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+                    activity.getWindow().clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
                 }
             });
         }