Degcosta / CallBlocker

Call Blocker is an Android Application that blocks incomming call without intervention of the user. This Source code is about How? we can use the internal API com.android.internal.telephony.ITelephony to access the endCall() function

Android Call Blocker

Step 1:

• create a new project in Android Studio

Step 2:

• create an AIDL folder
• create a new package in AIDL folder name must be com.android.internal.telephony
• create an AIDL file in that package name must be the ITelephony.aidl
• add that code in ITelephony.aidl

  package com.android.internal.telephony;
  interface ITelephony {
    boolean endCall();
    void answerRingingCall();
    void silenceRinger();
  }

Step 3:

• now its time to block all incomming calls
• Create a a BroadcastReceiver class
• add that code to the class

package jovial.callblocker;

import android.app.Application;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.widget.Toast;

import com.android.internal.telephony.ITelephony;
import java.lang.reflect.Method;



public class CallReceiver extends BroadcastReceiver {
    public CallReceiver() {
    }

    @Override
    public void onReceive(Context context, Intent intent) {
        ITelephony telephonyService;
        TelephonyManager telephony = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);

        try {
            String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
            String incomingNumber = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);

            Class c = Class.forName(telephony.getClass().getName());
            Method m = c.getDeclaredMethod("getITelephony");
            m.setAccessible(true);
            telephonyService = (ITelephony)m.invoke(telephony);
            telephonyService.endCall();

            /*
            if(state.equals(TelephonyManager.EXTRA_STATE_RINGING)){
                Toast.makeText(context,"Ringing State Number is -"+incomingNumber,Toast.LENGTH_SHORT).show();

            }
            if ((state.equals(TelephonyManager.EXTRA_STATE_OFFHOOK))){
                Toast.makeText(context,"Received State",Toast.LENGTH_SHORT).show();
            }
            if (state.equals(TelephonyManager.EXTRA_STATE_IDLE)){
                Toast.makeText(context,"Idle State",Toast.LENGTH_SHORT).show();
            }
            */

        }
        catch (Exception e){
            e.printStackTrace();
        }

    }
}

try this out, facing any issue? let me know