android - SlidingTabLayout not displaying on output -

i using android studio 1.2.2 , trying implement tabs 1 of activities. have added code don't seem getting output on phone. not need actionbar, slidingtablayout, doesn't show other blank screen when run.

iphone6activity.java

package com.hashmi.omar.vodafonestore;   import android.app.activity; import android.graphics.typeface; import android.os.bundle; import android.support.annotation.nullable; import android.support.v4.app.fragment; import android.support.v4.app.fragmentmanager; import android.support.v4.app.fragmentpageradapter; import android.support.v4.view.viewpager; import android.support.v7.app.actionbaractivity; import android.view.layoutinflater; import android.view.view; import android.view.viewgroup; import android.widget.textview;   public class iphone6activity extends activity {    private viewpager mpager;  private slidingtablayout mtabs;     @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_iphone6);      //sets font text     //typeface vodalt = typeface.createfromasset(getassets(), "vodafonelt.ttf");     //textview vodaheading = (textview) findviewbyid(r.id.textview10);    // vodaheading.settypeface(vodalt);      mpager = (viewpager) findviewbyid(r.id.ip6pager);      //mpager.setadapter(new mypageradapter(getsupportfragmentmanager()));      mtabs = (slidingtablayout) findviewbyid(r.id.ip6tabs);      mtabs.setviewpager(mpager);   }     class mypageradapter extends fragmentpageradapter{      string[] tabs;      public mypageradapter(fragmentmanager fm) {         super(fm);         tabs=getresources().getstringarray(r.array.tabs);     }       @override     public fragment getitem(int position) {         myfragment myfragment=myfragment.getinstance(position);         return myfragment;     }       @override     public charsequence getpagetitle(int position){         return tabs[position];     }       @override     public int getcount() {         return 3;     } }  public static class myfragment extends fragment{     private textview textview;     public static myfragment getinstance(int position){         myfragment myfragment = new myfragment();         bundle args = new bundle();         args.putint("position", position);         myfragment.setarguments(args);         return myfragment;     }       @override      public view oncreateview(layoutinflater inflater, @nullable viewgroup     container, @nullable bundle savedinstancestate) {         view layout=inflater.inflate(r.layout.fragment_my, container,     false);         textview= (textview) layout.findviewbyid(r.id.position);         bundle bundle=getarguments();         if(bundle!=null)         {             textview.settext("the page selected "+bundle.getint("position"));         }          return layout;     } }  } 

activity_iphone6.xml

<linearlayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/iphone6" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.hashmi.omar.vodafonestore.iphone6activity" android:background="#ffffffff">   <com.hashmi.omar.vodafonestore.slidingtablayout     android:id="@+id/ip6tabs"     android:layout_width="match_parent"     android:layout_height="wrap_content"     />  <android.support.v4.view.viewpager     android:id="@+id/ip6pager"     android:layout_width="match_parent"     android:layout_height="0dp"     android:layout_weight="1"     />    </linearlayout> 

fragment_my.xml

<?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent">  </linearlayout> 

you not using mypageradapter class. uncomment out line set adapter viewpager:

//mpager.setadapter(new mypageradapter(getsupportfragmentmanager()));