IncomingCallsReceiver.java

package net.learn2develop.autocalls;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.TelephonyManager;
import android.view.KeyEvent;
import android.widget.Toast;

import java.lang.reflect.Method;

import static android.content.Context.TELEPHONY_SERVICE;

public class IncomingCallsReceiver extends BroadcastReceiver {
    @Override
    public void onReceive(Context context, Intent intent) {
        if (!intent.getAction().equals("android.intent.action.PHONE_STATE")) return;
        String extraState = intent.getStringExtra(TelephonyManager.EXTRA_STATE);

        if (extraState.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
            String incomingNumber =
                intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
            Toast.makeText(context, incomingNumber,
                    Toast.LENGTH_LONG).show();
            answerPhoneHeadsethook(context, intent);
            

        }
        return;
    }

    private void answerPhoneHeadsethook(Context context, Intent intent) {
        String state = intent.getStringExtra(TelephonyManager.EXTRA_STATE);
        if (state.equals(TelephonyManager.EXTRA_STATE_RINGING)) {
            String number = intent.getStringExtra(TelephonyManager.EXTRA_INCOMING_NUMBER);
            Intent buttonUp = new Intent(Intent.ACTION_MEDIA_BUTTON);
            buttonUp.putExtra(Intent.EXTRA_KEY_EVENT, new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK));
            try {
                context.sendOrderedBroadcast(buttonUp, "android.permission.CALL_PRIVILEGED");
            }
            catch (Exception e) {
            }

            Intent headSetUnPluggedintent = new Intent(Intent.ACTION_HEADSET_PLUG);
            headSetUnPluggedintent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
            headSetUnPluggedintent.putExtra("state", 1); // 0 = unplugged  1 = Headset with microphone 2 = Headset without microphone
            headSetUnPluggedintent.putExtra("name", "Headset");
            // TODO: Should we require a permission?
            try {
                context.sendOrderedBroadcast(headSetUnPluggedintent, null);
            }
            catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();

            }

        }



    }
};