Question

I want to develop an android application that would open a url in a webView, using shouldInterceptRequest method in webViewClient. I must get the data using HttpClient. So I built the application but as I run the application, the main.xml gets loaded and then when I click on the button it gives html code of the url.

main.xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
          android:orientation="vertical"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"
    >
<Button
        android:id="@+id/buttonurl"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="visit     www.stackoverflow.com"
        />


</LinearLayout>

webview.xml

<?xml version="1.0" encoding="utf-8"?>

<WebView xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/webView1"
          android:layout_width="fill_parent"
          android:layout_height="fill_parent"/>

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.example"
      android:versionCode="1"
      android:versionName="1.0">
<uses-sdk android:minSdkVersion="16"/>
<application android:label="@string/app_name" android:icon="@drawable/ic_launcher">
    <activity android:name="MyActivity"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN"/>
            <category android:name="android.intent.category.LAUNCHER"/>
        </intent-filter>
    </activity>
    <activity android:name=".WebViewActivity" android:label="@string/app_name">
        <intent-filter android:label="@string/app_name">
            <action android:name="android.intent.action.SEND" />
            <action android:name="android.intent.action.VIEW"/>
            <action android:name="android.intent.action.GET_CONTENT"/>
            <category android:name="android.intent.category.DEFAULT" />
            <!--    <data android:mimeType="image/png" /> -->
        </intent-filter>


    </activity>
</application>

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

MyActivity.java

package com.example;

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MyActivity extends Activity {


private Button button;

//String strURL="www.facebook.com";


/**
 * Called when the activity is first created.
 */
@Override
public void onCreate(Bundle savedInstanceState) {

    final Context context=this;
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    button =(Button) findViewById(R.id.buttonurl);

    button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent intent = new Intent(context,WebViewActivity.class);
            startActivity(intent);
        }
    });



}
}

WebViewActivity.java

package com.example;

import android.app.Activity;
import android.os.Bundle;

import android.webkit.WebView;
public class WebViewActivity extends Activity{

  String url="http://www.stackoverflow.com";
public void onCreate(Bundle savedInstanceState){


    super.onCreate(savedInstanceState);
setContentView(R.layout.webview);

    WebView webView=  (WebView)findViewById(R.id.webView1);

    //MyWebViewClient myWebViewClient=new MyWebViewClient();
    webView.setWebViewClient(new MyWebViewClient());

    webView.loadUrl(url);

   // myWebViewClient.shouldOverrideUrlLoading(webView,url);



}
}

MyWebViewActivity.java

package com.example;

import android.webkit.WebResourceResponse;
import android.webkit.WebViewClient;
import android.webkit.WebView;
import android.net.Uri;
import android.content.Intent;
import android.app.Activity;
import android.widget.Toast;
import org.apache.http.client.HttpClient;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.HttpResponse;
import org.apache.http.HttpEntity;
import java.io.*;
import org.apache.http.protocol.BasicHttpContext;
import org.apache.http.protocol.HttpContext;
import org.apache.http.client.ClientProtocolException;


public class MyWebViewClient extends WebViewClient {

                    public InputStream httpcall(WebView view,String url) {


                    HttpClient httpClient = new DefaultHttpClient();
                    HttpContext localContext = new BasicHttpContext();
                    HttpGet httpGet = new HttpGet("http://www.stackoverflow.com");

                    BufferedReader reader = null;
                    String result = null;
                    try {
                        HttpResponse response = httpClient.execute(httpGet, localContext);
                        result = "";



                        reader = new BufferedReader(
                                new InputStreamReader(
                                        response.getEntity().getContent()
                                )
                        );

                        String line = null;
                        while ((line = reader.readLine()) != null) {
                            result += line + "\n";
                        }
                    } catch (ClientProtocolException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();

                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();

                    } finally {
                        if (reader != null) {
                            try {
                                reader.close();
                            } catch (IOException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                        }
                    }
                        ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream( result.getBytes());

                        return byteArrayInputStream;

                    //String webData = result.toString();

                     //   return webData;
                    //view.loadDataWithBaseURL("http://www.stackoverflow.com", webData, "text/html", "UTF-8", "about:blank");


                }



    @Override
   public WebResourceResponse shouldInterceptRequest(WebView view,String url){

       return new WebResourceResponse("text/json","utf-8",httpcall(view,url));
   }







}

Answer 1

Please Add this setContentView(R.layout.webview); line into your WebViewActivity class before WebView webView= (WebView)findViewById(R.id.webView1); and write instead of , it will solve your problem.

and change below line of your activity.

String url="http://www.stackoverflow.com"