Android Chrome Custom Tabs

fade_in.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true" >

    <alpha
        android:duration="1000"
        android:fromAlpha="0.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="1.0" />

</set>

fade_out.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
    android:fillAfter="true" >

    <alpha
        android:duration="1000"
        android:fromAlpha="1.0"
        android:interpolator="@android:anim/accelerate_interpolator"
        android:toAlpha="0.0" />

</set>

MainActivity.java

package com.suresh.chrometab;

import android.app.PendingIntent;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Color;
import android.net.Uri;
import android.os.Bundle;
import android.support.annotation.Nullable;
import android.support.customtabs.CustomTabsIntent;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.Button;

import com.games4playstore.aroundyou.R;

/**
 * Created by Suresh on 07-Feb-18.
 */

public class MainActivity extends AppCompatActivity {
    Button mButtonOpenChrome;
    Bitmap icon;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.layout_chrome_tab);

        icon = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);

        Intent intent = new Intent(MainActivity.this, MainActivity.class);
        final PendingIntent pendingIntent = PendingIntent.getActivity(this, 1016, intent, 0);

        mButtonOpenChrome = (Button) findViewById(R.id.button_open_chrome);
        mButtonOpenChrome.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String url = "https://developer.android.com/index.html";
                CustomTabsIntent.Builder builder = new CustomTabsIntent.Builder();
                //To add custom color to toolbar
                builder.setToolbarColor(Color.GREEN);
                
                //To add actionbutton to actionbar with respective intent
                builder.setActionButton(icon, "description", pendingIntent, true);
                
                //to add extra menu item with respective intent
                builder.addMenuItem("menuItemTitle", pendingIntent);
                
                //to add entry and exit animations to chrome tab
                builder.setStartAnimations(MainActivity.this, R.anim.fade_in, R.anim.fade_out);
                builder.setExitAnimations(MainActivity.this, R.anim.fade_in, R.anim.fade_out);
                
                CustomTabsIntent customTabsIntent = builder.build();
                customTabsIntent.launchUrl(MainActivity.this, Uri.parse(url));
            }
        });
    }
}