Intercept android SMS going to default inbox - BroadcastReceiver

Question

I'm developing a SMS based chat application using some Telco APIS. I am receiving SMS only from a particular number and I want to know how I can prevent SMS being sent to the the default inbox of android.

Following is the code of my SMS receiver.

Compile SDK: 27

public void onReceive(Context context, Intent intent) {

        Thread.currentThread().setPriority(Thread.MAX_PRIORITY);

        this.intent = new Intent(BROADCAST_ACTION);
        this.context = context;
        chatlogDBAdapter = new ChatlogDBAdapter(context);
        final Bundle bundle = intent.getExtras();

        try {

            if (bundle != null) {

                final Object[] pdusObj = (Object[]) bundle.get("pdus");

                for (int i = 0; i < pdusObj.length; i++) {

                    SmsMessage currentMessage = SmsMessage.createFromPdu((byte[]) pdusObj[i]);
                    String phoneNumber = currentMessage.getDisplayOriginatingAddress();

                    String senderNum = phoneNumber;

                    if(senderNum.equals("77100")){
                        String message = currentMessage.getDisplayMessageBody();

                        Log.i("SmsReceiver", "senderNum: "+ senderNum + "; message: " + message);
                        String timestamp = String.valueOf(System.currentTimeMillis());
                        String[] messagearray = message.split(",", -1);
                        String username = messagearray[0];
                        String messagebody = messagearray[1];

                        chatlogDBAdapter.addMessage(username,username,"username",messagebody,timestamp);

                        msgusername = username;
                        handler.removeCallbacks(sendUpdatesToUI);
                        handler.postDelayed(sendUpdatesToUI, 10);
                    }


                }
                abortBroadcast();
                return;
            }

        } catch (Exception e) {
            Log.e("SmsReceiver", "Exception smsReceiver" +e);

        }

    }

And the manifest

<receiver
            android:name=".IncomingSms"
            android:permission="android.permission.BROADCAST_SMS">
            <intent-filter android:priority="999">
                <action android:name="android.provider.Telephony.SMS_RECEIVED" />
                <action android:name="android.provider.Telephony.SMS_DELIVER" />
                <action android:name="android.provider.Telephony.SMS_DELIVER_ACTION" />
                <action android:name="android.intent.action.BOOT_COMPLETED" />
            </intent-filter>
        </receiver>

Answer 1

As of KitKat only one app can consume received sms directly with SMS_DELIVER_ACTION: changelog blog here.

Any filters for the SMS_RECEIVED_ACTION broadcast in existing apps will continue to work the same on Android 4.4, but only as an observer of new messages, because unless your app also receives the SMS_DELIVER_ACTION broadcast, you cannot write to the SMS Provider on Android 4.4.