Merge with 78a450b Android - Keep screen on for Exoplayer TheWidlarzGroup#1798 https://github.com/react-native-community/react-native-video/pull/1798/commits

Author: zhulduz

android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -14,6 +14,7 @@
 import android.view.Window;
 import android.view.accessibility.CaptioningManager;
 import android.widget.FrameLayout;
+import android.view.WindowManager;
 import android.widget.ImageButton;
 import android.widget.ImageView;
 
@@ -223,11 +224,13 @@ private void createViews() {
     protected void onAttachedToWindow() {
         super.onAttachedToWindow();
         initializePlayer();
+        setKeepScreenOn(true);
     }
 
     @Override
     protected void onDetachedFromWindow() {
         super.onDetachedFromWindow();
+        setKeepScreenOn(false);
         /* We want to be able to continue playing audio when switching tabs.
          * Leave this here in case it causes issues.
          */
@@ -604,9 +607,6 @@ private void startPlayback() {
         } else {
             initializePlayer();
         }
-        if (!disableFocus) {
-            setKeepScreenOn(true);
-        }
     }
 
     private void pausePlayback() {
@@ -615,7 +615,6 @@ private void pausePlayback() {
                 setPlayWhenReady(false);
             }
         }
-        setKeepScreenOn(false);
     }
 
     private void stopPlayback() {
@@ -1188,6 +1187,7 @@ public void setPausedModifier(boolean paused) {
             } else {
                 pausePlayback();
             }
+            setKeepScreenOn(!isPaused);
         }
     }