mzgreen

private void initViewPagerAndTabs() {
   ViewPager viewPager = (ViewPager) findViewById(R.id.viewPager);
   PagerAdapter pagerAdapter = new PagerAdapter(getSupportFragmentManager());
   pagerAdapter.addFragment(PartThreeFragment.createInstance(20), getString(R.string.tab_1));
   pagerAdapter.addFragment(PartThreeFragment.createInstance(4), getString(R.string.tab_2));
   viewPager.setAdapter(pagerAdapter);
   
   TabLayout tabLayout = (TabLayout) findViewById(R.id.tabLayout);
   tabLayout.setupWithViewPager(viewPager);
}

mzgreen

<android.support.v4.view.ViewPager
   android:id="@+id/viewPager"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   app:layout_behavior="@string/appbar_scrolling_view_behavior"/>

mzgreen

<?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"
   android:id="@+id/coordinatorLayout"
   android:layout_width="match_parent"
   android:layout_height="match_parent">
   
    <android.support.design.widget.AppBarLayout
            android:id="@+id/appBarLayout"

mzgreen

<?xml version="1.0" encoding="utf-8"?>
<android.support.v7.widget.RecyclerView 
   xmlns:android="http://schemas.android.com/apk/res/android"
   android:id="@+id/recyclerView"
   android:layout_width="match_parent"
   android:layout_height="match_parent"/>

mzgreen

android {
    compileSdkVersion 22
    buildToolsVersion "22.0.1"

    defaultConfig {
        minSdkVersion 14
        targetSdkVersion 22
    }
}

mzgreen

public abstract class HidingScrollListener extends RecyclerView.OnScrollListener {

    private static final float HIDE_THRESHOLD = 10;
    private static final float SHOW_THRESHOLD = 70;

    private int mToolbarOffset = 0;
    private boolean mControlsVisible = true;
    private int mToolbarHeight;
    private int mTotalScrolledDistance;

mzgreen

private void initRecyclerView() {
   final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);

   int paddingTop = Utils.getToolbarHeight(PartTwoActivity.this) + Utils.getTabsHeight(PartTwoActivity.this);
   recyclerView.setPadding(recyclerView.getPaddingLeft(), paddingTop, recyclerView.getPaddingRight(), recyclerView.getPaddingBottom());

   recyclerView.setLayoutManager(new LinearLayoutManager(this));
   
   // ...
}

mzgreen

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="@dimen/tabsHeight"
    android:background="?attr/colorPrimary">
    <FrameLayout
            android:layout_width="0dp"
            android:layout_height="match_parent"
            android:layout_weight="1" >
        <TextView
                android:layout_width="match_parent"

mzgreen

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent">

    <android.support.v7.widget.RecyclerView
            android:id="@+id/recyclerView"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clipToPadding="false"/>

mzgreen

private void initRecyclerView() {
    final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView);
    recyclerView.setLayoutManager(new LinearLayoutManager(this));
    RecyclerAdapter recyclerAdapter = new RecyclerAdapter(createItemList());
    recyclerView.setAdapter(recyclerAdapter);

    recyclerView.setOnScrollListener(new HidingScrollListener(this) {

        @Override
        public void onMoved(int distance) {