gesture - Open a Second Android Activity while drawing in GestureOverlayView? -

i have mainactivity2 implements ongestureperformedlistener, cannot start second activity. missing?

public class mainactivity2 extends activity         implements ongestureperformedlistener {     private gesturelibrary gesturelib;      @override     protected void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main_activity2);          gesturelib = gesturelibraries.fromrawresource(this,                  r.raw.gestures);         if (!gesturelib.load()) {             finish();             }         gestureoverlayview gestures = (gestureoverlayview)                  findviewbyid(r.id.gestureoverlayview);         gestures.addongestureperformedlistener(this);     }      @override     public void ongestureperformed(gestureoverlayview overlay,              gesture gesture) {             arraylist <prediction> predictions = gesturelib.recognize(gesture);          if (predictions.size()>0) {             prediction prediction = predictions.get(0);             if (prediction.score>1.0) {                 if (prediction.name.equals("one")) {                     intent intent = new intent(                             mainactivity2.this,                              mainactivity3.class);                     startactivity(intent);                 }                  if (prediction.name.equals("two")) {                     intent intent = new intent(                             mainactivity2.this,                             mainactivity4.class);                     startactivity(intent);                 }             }         }     } }