android - ViewPagerIndicator does not allow setBackgroundResource on ViewPager -

i'm trying use parallaxviewpager (https://github.com/andraskindler/parallaxviewpager) along viewpagerindicator (https://github.com/jakewharton/android-viewpagerindicator). problem i'm facing set background resource viewpager , works if not set page indicator. need viewpager indicator work parallaxviewpager.

the code i'm using

    final parallaxviewpager parallaxviewpager = (parallaxviewpager) rootview.findviewbyid(r.id.authentication_opening_fragment_viewpager);     pageindicator pageindicator = (circlepageindicator) rootview.findviewbyid(r.id.authentication_opening_fragment_indicator);      parallaxviewpager.setadapter(new authenticationopeningpageadapter(context.getfragmentmanager()));     parallaxviewpager.setbackgroundresource(r.drawable.bg_opening);      pageindicator.setviewpager(parallaxviewpager);  

if don't use last line, parallax background image works won't have indicator. if use .setviewpager() viewpager have blank background.

when debugging it, found "invalidates" setbackgroundresource line on viewpagerindicator library (on circlepageindicator file):

mviewpager.setonpagechangelistener(this); 

is there workaround or can fix problem?

for work, need modify little on parallaxviewpager this

private void init() {     source = new rect();     destination = new rect();     scaletype = fit_height;     overlap = overlap_half;     listener = new pagechangeparallaxlistener();     setonpagechangelistener(listener); }  public pagechangeparallaxlistener listener;  public viewpager.onpagechangelistener getpagechangelistener() {     return listener; }  public class pagechangeparallaxlistener implements         viewpager.onpagechangelistener {      @override     public void onpagescrolled(int position, float positionoffset,             int positionoffsetpixels) {         if (bitmap != null) {             source.left = (int) math                     .floor((position + positionoffset - correction_percentage)                             * chunkwidth);             source.right = (int) math                     .ceil((position + positionoffset + correction_percentage)                             * chunkwidth + projectedwidth);             destination.left = (int) math                     .floor((position + positionoffset - correction_percentage)                             * getwidth());             destination.right = (int) math.ceil((position + positionoffset                     + 1 + correction_percentage)                     * getwidth());             invalidate();         }          if (secondonpagechangelistener != null) {             secondonpagechangelistener.onpagescrolled(position,                     positionoffset, positionoffsetpixels);         }     }      @override     public void onpageselected(int position) {         if (secondonpagechangelistener != null) {             secondonpagechangelistener.onpageselected(position);         }     }      @override     public void onpagescrollstatechanged(int state) {         if (secondonpagechangelistener != null) {             secondonpagechangelistener.onpagescrollstatechanged(state);         }     }  } 

and while implementing circlepageindicator, have this

parallaxviewpager viewpager; circlepageindicator circlepageindicator;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(your layout);     //do view initialization id      viewpager.setadapter(your adapter);     circlepageindicator.setonpagechangelistener(viewpager             .getpagechangelistener());     circlepageindicator.setviewpager(viewpager);     viewpager.setbackgroundresource(r.drawable.parallax_bg); }