How to Go to New Screen/Page in Android Studio? -

i have quick question regarding android studio.

so first of new thing don't me wrong if make mistake.

so doing have created title screen app called "canada quiz". , below title have "start" button. , done far have attached code this: once start button clicked hide it. question.

how make once clicked should hide start button , show question , true , false button. have this. want questions appear person taps start button. , in content_main.xml have phone model witch displays start button , canada quiz. please me out possible

thank you!

package com.example.nilesh.myapplication;  import android.os.bundle; import android.support.v4.view.viewpager; import android.support.v7.app.appcompatactivity; import android.view.view; import android.view.menu; import android.view.menuitem; import android.widget.button;  import java.util.arraylist;  public class mainactivity extends appcompatactivity {      private button startbutton;     private button truebutton;     private button falsebutton;      @override     protected void oncreate(bundle savedinstancestate) {          super.oncreate(savedinstancestate);         setcontentview(r.layout.activity_main);          startbutton = (button) findviewbyid(r.id.startbutton);          arraylist <string> questions = new arraylist<string>();          string firstque = " canada located in north america? ";         string secondque = " ontario largest provice in canada? ";         string thridque = " toronto largest city in canada? ";         string fourque = " canada has 3 professional basketball teams. ";         string fiveque = " canada has 11 provinces , 3 territories. ";         string sixque = " justin trudeau not canada's prime minister. ";          final string [] allquestions = {firstque,secondque,thridque,fourque,fiveque,sixque};           startbutton.setonclicklistener(new view.onclicklistener() {             public void onclick (view v) {                 startbutton.setvisibility(view.invisible);             }         });     }      @override     public boolean oncreateoptionsmenu(menu menu) {         // inflate menu; adds items action bar if present.         getmenuinflater().inflate(r.menu.menu_main, menu);         return true;     }      @override     public boolean onoptionsitemselected(menuitem item) {         // handle action bar item clicks here. action bar         // automatically handle clicks on home/up button, long         // specify parent activity in androidmanifest.xml.         int id = item.getitemid();          //noinspection simplifiableifstatement         if (id == r.id.action_settings) {             return true;         }          return super.onoptionsitemselected(item);     }      public button gettruebutton() {         return truebutton;     }      public void settruebutton(button truebutton) {         this.truebutton = truebutton;     }      public button getfalsebutton() {         return falsebutton;     }      public void setfalsebutton(button falsebutton) {         this.falsebutton = falsebutton;     } } 

note cannot see true button , false button content_main.xml file....

to go next screen, use code:

intent intent = new intent(mainactivity.this, nextactivity.class);            startactivity(intent);