java - How to link two xml pages in Android app when a button is clicked? -

i making simple app in on home page, button placed. when button clicked, must display new page (xml in layout). how ..

my app contains in src directory, there 2 java files. 1. activity2 2. main_activity , 2 xml files in layout: 1. fragment_main.xml 2. activity.xml

i want when click "technical button", should display activity.xml page layout..

my codes:

1. main_activity.java

   package com.example.vit; 

   import java.util.locale;

   import android.util.log; import android.support.v7.app.actionbaractivity; import android.support.v7.app.actionbar; import android.support.v4.app.fragment; import android.support.v4.app.fragmentmanager; import android.support.v4.app.fragmenttransaction; import android.support.v4.app.fragmentpageradapter; import android.app.activity; import android.content.intent; import android.os.bundle; import android.support.v4.view.viewpager; import android.view.gravity; import android.view.layoutinflater; import android.view.menu; import android.view.menuitem; import android.view.view; import android.view.viewgroup; import android.widget.textview;

   public class mainactivity extends actionbaractivity implements actionbar.tablistener {

   /**  * {@link android.support.v4.view.pageradapter} provide  * fragments each of sections. use {@link fragmentpageradapter}  * derivative, keep every loaded fragment in memory. if  * becomes memory intensive, may best switch  * {@link android.support.v4.app.fragmentstatepageradapter}.  */ sectionspageradapter msectionspageradapter;  /**  * {@link viewpager} host section contents.  */ viewpager mviewpager;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      // set action bar.     final actionbar actionbar = getsupportactionbar();     actionbar.setnavigationmode(actionbar.navigation_mode_tabs);      // create adapter return fragment each of 3     // primary sections of activity.     msectionspageradapter = new sectionspageradapter(             getsupportfragmentmanager());      // set viewpager sections adapter.     mviewpager = (viewpager) findviewbyid(r.id.pager);     mviewpager.setadapter(msectionspageradapter);      // when swiping between different sections, select corresponding     // tab. can use actionbar.tab#select() if have     // reference tab.     mviewpager             .setonpagechangelistener(new viewpager.simpleonpagechangelistener() {                 @override                 public void onpageselected(int position) {                     actionbar.setselectednavigationitem(position);                 }             });      // each of sections in app, add tab action bar.     (int = 0; < msectionspageradapter.getcount(); i++) {         // create tab text corresponding page title defined         // adapter. specify activity object, implements         // tablistener interface, callback (listener) when         // tab selected.         actionbar.addtab(actionbar.newtab()                 .settext(msectionspageradapter.getpagetitle(i))                 .settablistener(this));     } }  @override public boolean oncreateoptionsmenu(menu menu) {     // inflate menu; adds items action bar if present.     getmenuinflater().inflate(r.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();     if (id == r.id.action_settings) {         return true;     }     return super.onoptionsitemselected(item); }  @override public void ontabselected(actionbar.tab tab,         fragmenttransaction fragmenttransaction) {     // when given tab selected, switch corresponding page in     // viewpager.     mviewpager.setcurrentitem(tab.getposition()); }  @override public void ontabunselected(actionbar.tab tab,         fragmenttransaction fragmenttransaction) { }  @override public void ontabreselected(actionbar.tab tab,         fragmenttransaction fragmenttransaction) { }  /**  * {@link fragmentpageradapter} returns fragment corresponding  * 1 of sections/tabs/pages.  */ public class sectionspageradapter extends fragmentpageradapter {      public sectionspageradapter(fragmentmanager fm) {         super(fm);     }      @override     public fragment getitem(int position) {         // getitem called instantiate fragment given page.         // return placeholderfragment (defined static inner class         // below).         return placeholderfragment.newinstance(position + 1);     }      @override     public int getcount() {         // show 3 total pages.         return 3;     }      @override     public charsequence getpagetitle(int position) {         locale l = locale.getdefault();         switch (position) {         case 0:             return getstring(r.string.title_section1).touppercase(l);         case 1:             return getstring(r.string.title_section2).touppercase(l);         case 2:             return getstring(r.string.title_section3).touppercase(l);         }         return null;     } }  /**  * placeholder fragment containing simple view.  */ public static class placeholderfragment extends fragment {     /**      * fragment argument representing section number      * fragment.      */     private static final string arg_section_number = "section_number";      /**      * returns new instance of fragment given section number.      */     public static placeholderfragment newinstance(int sectionnumber) {         placeholderfragment fragment = new placeholderfragment();         bundle args = new bundle();         args.putint(arg_section_number, sectionnumber);         fragment.setarguments(args);         return fragment;     }      public placeholderfragment() {     }      @override     public view oncreateview(layoutinflater inflater, viewgroup container,             bundle savedinstancestate) {         view rootview = inflater.inflate(r.layout.fragment_main, container,                 false);         return rootview;     } }     public void onclick(view v)     {         intent intent = new intent (v.getcontext(),activity.class);         startactivityforresult (intent,0);     } 

   }

2.activity2.java

   package com.example.vit; import android.app.activity; public class activity2 extends activity       public void oncreate(bundle, savedinstancestate) {     {         super.oncreate(savedinstancestate);         setcontentview(r.layout.activity);     }  }  3. fragment_main.xml      <linearlayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:tools="http://schemas.android.com/tools"     android:layout_width="match_parent"     android:layout_height="match_parent"     android:orientation="vertical"     android:paddingbottom="@dimen/activity_vertical_margin"     android:paddingleft="@dimen/activity_horizontal_margin"     android:paddingright="@dimen/activity_horizontal_margin"     android:paddingtop="@dimen/activity_vertical_margin"     tools:context="com.example.vit.mainactivity$placeholderfragment" >      <textview         android:id="@+id/section_label"         android:layout_width="wrap_content"         android:layout_height="wrap_content" />      <button         android:id="@+id/button1"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_margintop="31dp"         android:onclick="dosomething"         android:text="technical" />      <button         android:id="@+id/button2"         android:layout_width="wrap_content"         android:layout_height="wrap_content"         android:layout_margintop="50dp"         android:text="non technical" />  </linearlayout> 

4. activity.xml

   <textview     android:id="@+id/section_label"     android:layout_width="wrap_content"     android:layout_height="wrap_content" />  <textview     android:id="@+id/textview1"     android:layout_width="wrap_content"     android:layout_height="wrap_content"     android:text="your request being processed"     android:textappearance="?android:attr/textappearancelarge" /> 

intent intent = new intent(this, activitytwo.class); this.startactivity ( intent );