java - Open the Google-drive Application with floating button pressed -

i have button in fragment when use press opens screen google drive screen. in other words opens google drive simply.

but need screen in can see floating button or plus button pressed.

here code of java file

public class threefragment extends fragment{     public threefragment() {         // required empty public constructor     }      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container, bundle savedinstancestate) {         // inflate layout fragment         view rootview = inflater.inflate(r.layout.fragment_three, container, false);          button b1 = (button) rootview.findviewbyid(r.id.managecloud);         b1.setonclicklistener(new view.onclicklistener() {             @override             public void onclick(view v) {                 intent intent = new intent();                 intent.setaction(intent.action_main);                 intent.addcategory(intent.category_launcher);                 intent.setcomponent(new componentname("com.google.android.apps.docs",                         "com.google.android.apps.docs.app.newmainproxyactivity"));                 try {                     startactivity(intent);                 }catch (exception e){                     toast.maketext(getcontext(), "error: "+e, toast.length_long).show();                 }             }         });         return rootview;     }  }