Blocking Incoming call - Android

Step 1:
Create Broadcast receiver class for incoming call

package com.javaorigin.android.sample;

import java.lang.reflect.Method;

import com.android.internal.telephony.ITelephony;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent
import android.telephony.TelephonyManager;
import android.util.Log;

public class PhoneCallReceiver extends BroadcastReceiver {
 Context context = null;
 private static final String TAG = "Phone call";
 private ITelephony telephonyService;

 @Override
 public void onReceive(Context context, Intent intent) {
  Log.v(TAG, "Receving....");
  TelephonyManager telephony = (TelephonyManager) 
  context.getSystemService(Context.TELEPHONY_SERVICE);  
  try {
   Class c = Class.forName(telephony.getClass().getName());
   Method m = c.getDeclaredMethod("getITelephony");
   m.setAccessible(true);
   telephonyService = (ITelephony) m.invoke(telephony);
   //telephonyService.silenceRinger();
   telephonyService.endCall();
  } catch (Exception e) {
   e.printStackTrace();
  }

 }


}

Step 2:
Create IDL interface for getting core Telephony service
package name must be com.android.internal.telephony

FileName : ITelephony.aidl

package com.android.internal.telephony;

  interface ITelephony {


    boolean endCall();


    void answerRingingCall();


    void silenceRinger();

  }

Step 3:
AndroidManifest.xml configuration

      package="com.javaorigin.android.sample"
      android:versionCode="1"
      android:versionName="1.0">