I am working in a project in android, this app needs to receives a sms from a specifict phone number to launch another app. I already attained to get the message tray, but I do not know how use a filter to be able to get the sms from that specifict phone number in order to launch (activate) the app.

Here is the code from where I am getting the full sms list:

ArrayList smsList = new ArrayList();

public void onItemClick(AdapterView<?> parent, View view, int pos, long id) {     try {         String[] splitted = smsList.get(pos).split("\n");         String sender = splitted[0];         String encryptedData = "";         for (int i = 1; i < splitted.length; ++i) {             encryptedData += splitted[i];         }         String data = sender + "\n" + StringCryptor.decrypt(new String(SmsReceiver.PASSWORD), encryptedData);         Toast.makeText(this, data, Toast.LENGTH_SHORT).show();     } catch (Exception e) {         e.printStackTrace();     } }