How to use ViewPager in NestedScrollView in Android

In this android programming source code example, we are going to use ViewPager in NestedScrollView in Android.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to use ViewPager in NestedScrollView in Android.

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nextedScrollView"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#ededed">

        <android.support.design.widget.TabLayout
            android:id="@+id/tabs"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/material_blue_grey_800"
            app:tabGravity="fill"
            app:tabIndicatorColor="@color/colorPrimary"
            app:tabMode="scrollable"
            app:tabSelectedTextColor="@color/colorPrimary"
            app:tabTextColor="@color/white" />

        <android.support.v4.view.ViewPager
            android:id="@+id/viewpager"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_below="@id/tabs"/>

    </RelativeLayout>

</android.support.v4.widget.NestedScrollView>

MainActivity.java

import android.support.design.widget.TabLayout;
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.v4.widget.NestedScrollView;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class TabLayoutAndViewPagerActivity18 extends AppCompatActivity {
    private TabLayout tabLayout;
    private ViewPager viewPager;
    private NestedScrollView nestedScrollView;
    private int int_items = 5 ;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_tab_layout_and_view_pager18);
        tabLayout = (TabLayout) findViewById(R.id.tabs);
        viewPager = (ViewPager) findViewById(R.id.viewpager);
        nestedScrollView = (NestedScrollView) findViewById(R.id.nextedScrollView) ;
        nestedScrollView.setFillViewport(true);

        viewPager.setAdapter(new MyAdapter(getSupportFragmentManager()));

        tabLayout.post(new Runnable() {
            @Override
            public void run() {
                tabLayout.setupWithViewPager(viewPager);
            }
        });
    }

    private class MyAdapter extends FragmentPagerAdapter {

        public MyAdapter(FragmentManager fm) {
            super(fm);
        }

        @Override
        public Fragment getItem(int position) {
            switch (position){
                case 0 : return new TabFragment();
                case 1 : return new TabFragment();
                case 2 : return new TabFragment();
                case 3 : return new TabFragment();
                case 4 : return new TabFragment();
            }
            return null;
        }

        @Override
        public int getCount() {
            return int_items;
        }

        @Override
        public CharSequence getPageTitle(int position) {

            switch (position){
                case 0 :
                    return "TabLayout1";
                case 1 :
                    return "TabLayout2";
                case 2 :
                    return "TabLayout3";
                case 3 :
                    return "TabLayout4";
                case 4 :
                    return "TabLayout5";
            }
            return null;
        }
    }
}

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