Fix for issue #31

Author: nshmura

library/src/main/java/com/nshmura/recyclertablayout/RecyclerTabLayout.java

@@ -290,10 +290,7 @@ protected void scrollToTab(int position, float positionOffset, boolean fitIndica
  mRequestScrollToTab = true;
  }
 
- if (mAdapter != null && mIndicatorPosition != position) {
- updateCurrentIndicatorPosition(position, positionOffset - mOldPositionOffset,
- positionOffset);
- }
+ updateCurrentIndicatorPosition(position, positionOffset - mOldPositionOffset, positionOffset);
  mIndicatorPosition = position;
 
  stopScroll();
@@ -311,6 +308,9 @@ protected void scrollToTab(int position, float positionOffset, boolean fitIndica
  }
 
  protected void updateCurrentIndicatorPosition(int position, float dx, float positionOffset) {
+ if (mAdapter == null) {
+ return;
+ }
  int indicatorPosition = -1;
  if (dx > 0 && positionOffset >= mPositionThreshold - POSITION_THRESHOLD_ALLOWABLE) {
  indicatorPosition = position + 1;