A SAMPLE CODE FOR BROADCAST RECIVERS IN ANDROID

 MainActivity.java

package com.example.broadcastreciverex;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.telephony.TelephonyManager;
import android.widget.Toast;

public class MainActivity extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        // TODO Auto-generated method stub
        // Second phoneListener = new Second();
        Toast.makeText(context, "gahd", 2000).show();
      
        Bundle b = intent.getExtras();
        String s = b.getString(TelephonyManager.EXTRA_STATE);
        Toast.makeText(context, "hai" + s, 2000).show();

    }

}
AndroidManifest.xml



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.broadcastreciverex"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

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

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
      

        <receiver
            android:name="com.example.broadcastreciverex.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.PHONE_STATE" />
            </intent-filter>
        </receiver>
       
    </application>

</manifest>