java - Palette (Android Support v22) doesn't generate Swatches -

first of all, never used palette, when wanted start it, see tutorials , blogs talk v21 , not v22.

my problem have swatch (in position 0 of swatch's array [palette.getswatches().get(0)]) returns black (title , body), here example i'm using this, maybe it's wrong i'm copying https://developer.android.com/reference/android/support/v7/graphics/palette.html

        palette.from(bitmapfactory.decoderesource(getresources(),r.drawable.prueba2)).generate(new palette.paletteasynclistener() {         @override         public void ongenerated(palette palette) {             text.settextcolor(palette.getvibrantswatch().getbodytextcolor());             text.setbackgroundcolor(palette.getvibrantswatch().gettitletextcolor());         }     }); 

when start app (i have activity textview , imageview) closes saying this

 caused by: java.lang.nullpointerexception: attempt invoke virtual method 'int android.support.v7.graphics.palette$swatch.getbodytextcolor()' on null object reference         @ com.alfondo.projectpalette.mainactivity.oncreate(mainactivity.java:33)" 

edit: drawable. (i cant't post imgs) http://imgur.com/ygv9xvs

first create bitmap of image using picasso palette color of image , set color collapsible toolbar

  // bitmap of image , generate toolbar color passing bitmap palette        bitmap bitmap = bitmapfactory.decoderesource(getresources(), r.drawable.nature);                 palette.from(bitmap).generate(new palette.paletteasynclistener() {         // muted color bitmap using palette , set collapsible toolbar          @override                     public void ongenerated(palette palette) {                         collapsingtoolbarlayout.setcontentscrimcolor(palette.getmutedcolor(getresources().getcolor(r.color.colorprimary)));                             collapsingtoolbarlayout.setstatusbarscrimcolor(palette.getmutedcolor(getresources().getcolor(r.color.colorprimarydark)));                         }                     });