I have to develop browser that on click send push notification on button click

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Android

Create a single page app.There should be an input box and a button, pressing this button should send the text from the above text box to an external system(basically a rest call) . There should be an alert with above call's response status
App should be able to receive notification from external system and display the data received in the notification in the first page.
You can use any open source technology to solve the above task. Try to use gcm or facebook parse

Provide me the source code.

What I have tried:

I had tried only this.......................

package com.example.hp.browserbtn;

import android.content.Intent;
import android.net.Uri;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;


public class MainActivity extends ActionBarActivity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}



public void browser(View view){
Intent ib = ((new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.com/search?q=<android>"))));
startActivity(ib);
}