Create Browser using WebView with navigation button(Next and Previous) or reload button.

Hear is the code which explain, How to create Browser using WebView with navigation button Functionality.

Layout File : activity_detailed_news.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.bhadreshtech.Activity.DetailedNewsActivity">
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">
        <WebView
            android:id="@+id/mWebNews"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_above="@+id/linearLayout4">
        </WebView>
        <ImageView
            android:layout_width="wrap_content"
            android:src="@drawable/my_progress_indeterminate"
            android:id="@+id/mImgProgress"
            android:layout_centerInParent="true"
            android:layout_height="wrap_content" />
        <RelativeLayout
            android:id="@+id/linearLayout4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true">
            <LinearLayout
                android:orientation="horizontal"
                android:layout_width="match_parent"
                android:layout_alignTop="@+id/mImgRefresh"
                android:layout_alignBottom="@+id/mImgRefresh"
                android:layout_height="wrap_content"
                android:layout_toLeftOf="@+id/mImgRefresh"
                android:layout_toStartOf="@+id/mImgRefresh">
                <TextView
                    android:id="@+id/mLblPrevious"
                    android:layout_width="0dp"
                    android:layout_height="match_parent"
                    android:layout_weight="1"
                    android:layout_gravity="center_vertical"
                    android:padding="10dp"
                    android:gravity="center"
                    android:text="Previous"
                    android:textColor="@color/blue_light"
                    android:textSize="15dp" />
                <TextView
                    android:id="@+id/mLblNext"
                    android:layout_width="0dp"
                    android:layout_weight="1"
                    android:layout_height="match_parent"
                    android:layout_gravity="center_vertical"
                    android:padding="10dp"
                    android:textColor="@color/blue_light"
                    android:gravity="center"
                    android:paddingLeft="20dp"
                    android:text="Next"
                    android:textSize="15dp" />
            </LinearLayout>
            <ImageView
                android:id="@+id/mImgRefresh"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_alignParentRight="true"
                android:layout_gravity="right"
                android:padding="10dp"
                android:src="@drawable/reload_icon"
                android:textSize="15dp" />
        </RelativeLayout>
    </RelativeLayout>
</RelativeLayout>

Class File : DetailedNewsActivity

package com.bhadreshtech.Activity;

import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.ImageView;
import android.widget.TextView;

import com.bhadreshtech.R;

public class DetailedNewsActivity extends AppCompatActivity implements View.OnClickListener {

    private TextView mLblTitleAction;
    private ImageView mImgMenuToggle;
    private ImageView mImgAction;
    private String url = "http://www.google.com";
    private int from = 0;
    private WebView mWebNews;
    private ImageView mImgBacks, mImgRefresh;
    private TextView mLblNext, mLblPrevious;
    private ImageView mImgProgress;
    private boolean blag_progress;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_detailed_news);
        Bundle bundle = getIntent().getExtras();
        if (bundle != null) {
            url = bundle.getString("url") + "";
            from = bundle.getInt("from");
        }
        initializeView();
        setClickEvent();

    }

    private void setClickEvent() {
        mImgRefresh.setOnClickListener(this);
        mLblNext.setOnClickListener(this);
        mLblPrevious.setOnClickListener(this);
        mImgMenuToggle.setOnClickListener(this);
    }

    private void initializeView() {
        getSupportActionBar().setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM | ActionBar.DISPLAY_SHOW_HOME);
        getSupportActionBar().setCustomView(R.layout.custome_actiobar);
        getSupportActionBar().setDisplayHomeAsUpEnabled(false);
        mLblTitleAction = (TextView) findViewById(R.id.mLblTitleAction);
        mLblTitleAction.setText("News Detail");
        mImgProgress = (ImageView) findViewById(R.id.mImgProgress);
        mImgProgress.setVisibility(View.VISIBLE);
        mImgMenuToggle = (ImageView) findViewById(R.id.mImgMenuToggle);
        mImgMenuToggle.setImageDrawable(getResources().getDrawable(R.drawable.cloase_bt));
        mImgAction = (ImageView) findViewById(R.id.mImgAction);
        mImgAction.setVisibility(View.INVISIBLE);
        mImgRefresh = (ImageView) findViewById(R.id.mImgRefresh);
        mLblNext = (TextView) findViewById(R.id.mLblNext);
        mLblPrevious = (TextView) findViewById(R.id.mLblPrevious);
        intializeWebView();
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.mImgRefresh:
                if (blag_progress) {
                    mWebNews.onPause();
                    mImgProgress.setVisibility(View.GONE);
                    mImgRefresh.setImageDrawable(getResources().getDrawable(R.drawable.reload_icon));
                    blag_progress = false;
                } else {
                    mImgProgress.setVisibility(View.VISIBLE);
                    mWebNews.reload();
                    mImgRefresh.setImageDrawable(getResources().getDrawable(R.drawable.close_icon));
                    blag_progress = true;
                }
                break;
            case R.id.mImgMenuToggle:
                this.finish();
                break;
            case R.id.mLblNext:
                if (mWebNews.canGoForward()) {
                    mWebNews.goForward();
                }
                break;
            case R.id.mLblPrevious:
                if (mWebNews.canGoBack()) {
                    mWebNews.goBack();
                }
                break;
        }
    }

    private void intializeWebView() {
        mWebNews = (WebView) findViewById(R.id.mWebNews);
        mWebNews.getSettings().setJavaScriptEnabled(true);
        mWebNews.loadUrl(url);
        //mWebNews.loadUrl("file:///android_asset/ppp1.html");
        mWebNews.setWebViewClient(new WebViewClient());
        mWebNews.setInitialScale(1);
        mWebNews.getSettings().setBuiltInZoomControls(true);
        mWebNews.getSettings().setUseWideViewPort(true);
        mWebNews.setWebChromeClient(new WebChromeClient() {
            public void onProgressChanged(WebView view, int progress) {
                if (progress >= 80) {
                    mImgRefresh.setImageDrawable(getResources().getDrawable(R.drawable.reload_icon));
                    blag_progress = false;
                    mImgProgress.setVisibility(View.GONE);
                } else {
                    mImgRefresh.setImageDrawable(getResources().getDrawable(R.drawable.close_icon));
                    blag_progress = true;
                    mImgProgress.setVisibility(View.VISIBLE);
                }

            }
        });

    }


}