Capture Requests and Get Cookies of Web Page in a WebView in Android

Introduction

Using WebView we can create an Android application but not a native Android application.

Assuming we want to customize that application, we must capture the request executed when the web page is loaded.

When the request is captured then we can only redirect the control to an activity then we can develop the activity using an overridden method in WebViewClient.

public void onLoadResource(WebView view, String url){}

For instance,

WebView mWebView;
mWebView.setWebViewClient(new MyWebViewClient()
{
@Override
public void onLoadResource(WebView view, String url){
System.out.println("Current URL : "+ url + " " + Html.fromHtml("<br>") + " is http url ? "+ URLUtil.isHttpUrl(url));
if( url.equals("http://www.c-sharpcorner.com/1/247/android-programming.aspx"))
{
Toast.makeText(getApplicationContext(), "Android Articles page is loading... ", Toast.LENGTH_LONG).show();
}
}
}

Assume we want to get cookies to get session details and other information, then depending on the URL we can get the cookies.

We can also get the session of the web page loaded in the WebView.

CookieSyncManager

The CookieSyncManager synchronizes the browser cookie store between main memory and permanent storage.

CookieSyncManager.getInstance().sync();

For instance,

public void onPageFinished(WebView view, String url){
CookieSyncManager.getInstance().sync();
URL url1 = null;
try {
url1 = new URL(url);
}
catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("C sharp corner user Ref " + url1.getRef());
System.out.println(" C sharp corner user host " + url1.getHost());
System.out.println("C sharp corner user authority " + url1.getAuthority());
String cookies = CookieManager.getInstance().getCookie(url);
System.out.println("All COOKIES " + cookies);
Toast.makeText(getApplicationContext(),"All Cookies " + cookies , Toast.LENGTH_LONG).show();
}

Source Code-

MainActivity.java

package com.example.webviewdemo;
import java.net.MalformedURLException;
import java.net.URL;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.text.Html;
import android.webkit.CookieManager;
import android.webkit.CookieSyncManager;
import android.webkit.URLUtil;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends Activity {
public Context context;
public class MyWebViewClient extends WebViewClient {}
WebView mWebView;
String url = "http://www.c-sharpcorner.com/";@SuppressLint("SetJavaScriptEnabled")@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.webView1);
mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(true);
mWebView.getSettings().setBuiltInZoomControls(true);
mWebView.setWebViewClient(new MyWebViewClient() {@Override
public void onLoadResource(WebView view, String url) {
System.out.println("Current URL : " + url + " " + Html.fromHtml("<br>") + " is http url ? " + URLUtil.isHttpUrl(url));
if (url.equals("http://www.c-sharpcorner.com/1/247/android-programming.aspx")) {
Toast.makeText(getApplicationContext(), "Android Articles page is loading... ", Toast.LENGTH_LONG).show();
}
}@Override
public void onPageFinished(WebView view, String url) {
CookieSyncManager.getInstance().sync();
URL url1 = null;
try {
url1 = new URL(url);
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("C sharp corner user Ref " + url1.getRef());
System.out.println(" C sharp corner user host " + url1.getHost());
System.out.println("C sharp corner user authority " + url1.getAuthority());
String cookies = CookieManager.getInstance().getCookie(url);
System.out.println("All COOKIES " + cookies);
Toast.makeText(getApplicationContext(), "All Cookies " + cookies, Toast.LENGTH_LONG).show();
}
});
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.loadUrl(url);
}@Override
public void onBackPressed() {
if (mWebView.canGoBack()) {
mWebView.goBack();
} else {
super.onBackPressed();
}
}
}

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<WebView
android:id="@+id/webView1"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>

Note

Add Permission of the internet in the manifest file.

<uses-permission android:name="android.permission.INTERNET" />

Output

After capturing the request URL before a web page,

Android Program

After getting a cookies session in a WebView,

Figure 2- WebView

16 Comments

Join the conversation! Your thoughts help the community grow.

Santhakumar Munuswamy11y ago
Good Article. Thanks for sharing
- Abhijeet Singh11y ago
  thank you ..
Rakesh11y ago
Good one sir
- Abhijeet Singh11y ago
  Thank You :)
Sibeesh Venu11y ago
Nice Share
- Abhijeet Singh11y ago
  Thanks
Rajeesh Menoth11y ago
Nice Share
- Abhijeet Singh11y ago
  Thanks
Mohammed Ibrahim11y ago
nice....
- Abhijeet Singh11y ago
  Thanks
Gopi Chand11y ago
Nice work Abhijeet :)
- Abhijeet Singh11y ago
  Thanks Gopi
Vaikesh K P11y ago
Nice :)
- Abhijeet Singh11y ago
  thank u
Karthikeyan K11y ago
Nice one sir..Thanks for share
- Abhijeet Singh11y ago
  Thanks