Working with SMS messages in Android?

Question

Android

Is it possible to implement an Android application that can somehow process incoming SMS messages and, depending on the text of the message, react in a certain way? Is there such functionality in the Android API?
At the same time, it is important that the standard application for viewing SMS messages work normally.

Answer 1

stackoverflow.com/questions/848728/how-can-i-read-sms-messages-from-the-inbox-programmatically-in-android
_

Answer 2

Thanks, it's helpful.
but in addition to reading SMS, I also need to make sure that the application instantly reacts to a new incoming SMS.
How can this be done, please?