Using HTML pages loading in Android

activity_main.xml
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<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:layout_behavior="@string/appbar_scrolling_view_behavior"
    tools:showIn="@layout/activity_main"
    tools:context=".MainActivity"
    android:orientation="vertical"
    android:background="#c78bd3">

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Load Html Page"
        android:id="@+id/button"
        android:layout_gravity="center_horizontal"
        android:layout_marginTop="5dp" />

    <WebView
        android:layout_width="match_parent"
        android:layout_height="fill_parent"
        android:id="@+id/webView"
        android:layout_marginTop="20dp" />
</LinearLayout>

MainActivity.Java
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package com.android.anil.htmlpagesinandroid;

import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {
    Button loadhtmlpage;
    WebView webView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        webView=(WebView)findViewById(R.id.webView);
        loadhtmlpage=(Button)findViewById(R.id.button);
        loadhtmlpage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                webView.loadUrl("file:///android_asset/myfile.html");

            }
        });

    }
}

Output is:
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