android - I can't use Intent at Activity -

when click marker on google map, want enter activity, when got result javascript, can't intent

websettings websetting = webview.getsettings(); websetting.setjavascriptenabled(true); websetting.setdisplayzoomcontrols(true); websetting.setsupportzoom(true); websetting.setbuiltinzoomcontrols(true); webview.addjavascriptinterface(new javascriptinterfacetest(this), "android"); 

and javascriptinterfacetest():

public class javascriptinterfacetest {   context mcontext;    /** instantiate interface , set context */   javascriptinterfacetest(context c) {     mcontext = c;   }    /** show toast web page */   @javascriptinterface   public void responseresult(string result){     log.e("jscallback","drink");     intent mainintent = new intent(mainactivity.this, test.class);     startactivity(mainintent);   }    @javascriptinterface   private void startactivity(intent mainintent) {     // todo auto-generated method stub   } } 

html:

drinkmarker = new google.maps.marker({                    position: {lat: 25.079734,lng: 121.569519},                    map: map,                    }); drinkmarker.addlistener('click',function(){                         android.responseresult("drink");                         }); 

pass current context instead of mainactivity

public class javascriptinterfacetest {   context mcontext;    /** instantiate interface , set context */   javascriptinterfacetest(context c) {     mcontext = c;   }    /** show toast web page */   @javascriptinterface   public void responseresult(string result){     log.e("jscallback","drink");     intent mainintent = new intent(mcontext, test.class);      mcontext.startactivity(mainintent);   }    @javascriptinterface   private void startactivity(intent mainintent) {     // todo auto-generated method stub   } }