Clean code

app/src/leanback/java/com/fongmi/android/tv/ui/activity/VideoActivity.java

@@ -958,7 +958,7 @@ public class VideoActivity extends BaseActivity implements CustomKeyDownVod.List
 
     private void updateHistory(Episode item, boolean replay) {
         replay = replay || !item.equals(mHistory.getEpisode());
-        long position = replay ? 0 : mHistory.getPosition();
+        long position = replay ? C.TIME_UNSET : mHistory.getPosition();
         mHistory.setPosition(position);
         mHistory.setEpisodeUrl(item.getUrl());
         mHistory.setVodRemarks(item.getName());

app/src/main/java/com/fongmi/android/tv/player/Players.java

@@ -186,7 +186,7 @@ public class Players implements Player.Listener, ParseCallback {
     }
 
     public long getPosition() {
-        return exoPlayer == null ? 0 : exoPlayer.getCurrentPosition();
+        return exoPlayer == null ? C.TIME_UNSET : exoPlayer.getCurrentPosition();
     }
 
     public long getDuration() {

app/src/mobile/java/com/fongmi/android/tv/ui/activity/VideoActivity.java

@@ -988,7 +988,7 @@ public class VideoActivity extends BaseActivity implements Clock.Callback, Custo
 
     private void updateHistory(Episode item, boolean replay) {
         replay = replay || !item.equals(mHistory.getEpisode());
-        long position = replay ? 0 : mHistory.getPosition();
+        long position = replay ? C.TIME_UNSET : mHistory.getPosition();
         mHistory.setPosition(position);
         mHistory.setEpisodeUrl(item.getUrl());
         mHistory.setVodRemarks(item.getName());