<?xml version="1.0" encoding="utf-8"?> 
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android" 
  xmlns:app="http://schemas.android.com/apk/res-auto" 
  xmlns:tools="http://schemas.android.com/tools" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" 
  android:fitsSystemWindows="true" 
  tools:context="com.ganshenml.slideholdsmoothdemo.ScrollingActivity"> 
 
  <android.support.design.widget.AppBarLayout 
    android:id="@+id/app_bar" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:fitsSystemWindows="true" 
    android:theme="@style/AppTheme.AppBarOverlay"> 
 
    <android.support.design.widget.CollapsingToolbarLayout 
      android:id="@+id/toolbar_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:fitsSystemWindows="true" 
      app:contentScrim="?attr/colorPrimary" 
      app:layout_scrollFlags="scroll|exitUntilCollapsed" 
      app:titleEnabled="false"> 
 
      <android.support.v7.widget.Toolbar 
        android:id="@+id/toolbar" 
        android:layout_width="match_parent" 
        android:layout_height="30dp" 
        app:popupTheme="@style/AppTheme.PopupOverlay"></android.support.v7.widget.Toolbar> 
 
      <ImageView 
        android:layout_width="match_parent" 
        android:layout_height="280dp" 
        android:scaleType="centerCrop" 
        android:src="@drawable/bg" /> 
 
      <android.support.design.widget.TabLayout 
        android:id="@+id/tabLayout" 
        android:layout_width="match_parent" 
        android:layout_height="30dp" 
        android:layout_gravity="bottom" 
        android:background="@color/colorAccent"></android.support.design.widget.TabLayout> 
 
    </android.support.design.widget.CollapsingToolbarLayout> 
  </android.support.design.widget.AppBarLayout> 
 
  <include layout="@layout/content_scrolling" /> 
</android.support.design.widget.CoordinatorLayout> 

public class ScrollingActivity extends AppCompatActivity { 
  private TabLayout tabLayout; 
  private ViewPager viewPager; 
 
  @Override 
  protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_scrolling); 
    initViews(); 
  } 
 
  private void initViews() { 
    tabLayout = (TabLayout) findViewById(R.id.tabLayout); 
    viewPager = (ViewPager) findViewById(R.id.viewPager); 
 
    viewPager.setOffscreenPageLimit(2); 
    viewPager.setAdapter(new MPagerAdapter(getSupportFragmentManager())); 
    tabLayout.setupWithViewPager(viewPager); 
  } 
 
} 

public class MPagerAdapter extends FragmentStatePagerAdapter { 
  private String[] tabTitle = new String[]{"tab01", "tab02"}; 
  private FirstFragment firstFragment; 
  private SecondFragment secondFragment; 
 
  public MPagerAdapter(FragmentManager fm) { 
    super(fm); 
  } 
 
  @Override 
  public Fragment getItem(int position) { 
    if (position == 0) { 
      if (firstFragment == null) { 
        firstFragment = new FirstFragment(); 
      } 
      return firstFragment; 
    } else if (position == 1) { 
      if (secondFragment == null) { 
        secondFragment = new SecondFragment(); 
      } 
      return secondFragment; 
    } 
    return null; 
  } 
 
  @Override 
  public int getCount() { 
    return tabTitle.length; 
  } 
 
  @Override 
  public CharSequence getPageTitle(int position) { 
    return tabTitle[position]; 
  } 
 
} 

<android.support.design.widget.AppBarLayout 
    android:id="@+id/app_bar" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:fitsSystemWindows="true" 
    android:theme="@style/AppTheme.AppBarOverlay"> 
 
    <android.support.design.widget.CollapsingToolbarLayout 
      android:id="@+id/toolbar_layout" 
      android:layout_width="match_parent" 
      android:layout_height="wrap_content" 
      android:fitsSystemWindows="true" 
      app:contentScrim="?attr/colorPrimary" 
      app:layout_scrollFlags="scroll|exitUntilCollapsed" 
      app:titleEnabled="false"> 
 
      <ImageView 
        android:layout_width="match_parent" 
        android:layout_height="280dp" 
        android:scaleType="centerCrop" 
        android:src="@drawable/bg" /> 
 
    </android.support.design.widget.CollapsingToolbarLayout> 
 
    <android.support.design.widget.TabLayout 
      android:id="@+id/tabLayout" 
      android:layout_width="match_parent" 
      android:layout_height="30dp" 
      android:layout_gravity="top" 
      android:background="@color/colorAccent"></android.support.design.widget.TabLayout> 
 
  </android.support.design.widget.AppBarLayout>