read content from url when incoming call

I am trying to find out how to get string from url during incoming call, but it always ends with error "Unfortunatelly stopped". What am I doing wrong?

package com.example.detectincomingcall;

import java.io.IOException;

import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.HttpClient;
import org.apache.http.client.ResponseHandler;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.BasicResponseHandler;
import org.apache.http.impl.client.DefaultHttpClient;


//import android.app.ProgressDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.AsyncTask;
import android.telephony.TelephonyManager;
//import android.widget.TextView;
import android.widget.Toast;


public class MyCallReceiver extends BroadcastReceiver {


    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(TelephonyManager.EXTRA_STATE_RINGING)) {
            // This code will execute when the phone has an incoming call

            // Server Request URL
            String serverURL = "http://ift.tt/1E7O5Gi"; 

            // Create Object and call AsyncTask execute Method
            new LongOperation().execute(serverURL);

            // get the phone number 
            String incomingNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
            String mojText = "";
            if (incomingNumber.equals("+"))
            {
                mojText = "aaa";
            }
            Toast.makeText(context, "Call from:" +incomingNumber+ " "+mojText, Toast.LENGTH_LONG).show();
            //Toast.makeText(context, "Call from:" +incomingNumber, Toast.LENGTH_LONG).show();

        } else if (intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
                TelephonyManager.EXTRA_STATE_IDLE)
                || intent.getStringExtra(TelephonyManager.EXTRA_STATE).equals(
                        TelephonyManager.EXTRA_STATE_OFFHOOK)) {
            // This code will execute when the call is disconnected
            Toast.makeText(context, "Detected call hangup event", Toast.LENGTH_LONG).show();

        }
    }

    // Class with extends AsyncTask class
    private class LongOperation  extends AsyncTask<String, Void, Void> {

        private final HttpClient Client = new DefaultHttpClient();
        private String Content;
        private Context context;
        private String Error = null;
        protected void onPreExecute() {
            // NOTE: You can call UI Element here.
        }

        // Call after onPreExecute method
        protected Void doInBackground(String... urls) {
            try {

                // Call long running operations here (perform background computation)
                // NOTE: Don't call UI Element here.

                // Server url call by GET method
                HttpGet httpget = new HttpGet(urls[0]);
                ResponseHandler<String> responseHandler = new BasicResponseHandler();
                Content = Client.execute(httpget, responseHandler);

            } catch (ClientProtocolException e) {
                Error = e.getMessage();
                cancel(true);
            } catch (IOException e) {
                Error = e.getMessage();
                cancel(true);
            }

            return null;
        }

        protected void onPostExecute(Void unused) {
            // NOTE: You can call UI Element here.

            // Close progress dialog            
            if (Error != null) {
                Toast.makeText(context, "Call from:" +Error, Toast.LENGTH_LONG).show();
            } else {
                Toast.makeText(context, "Call from:" +Content, Toast.LENGTH_LONG).show();               
             }
        }

    }

}