The third party APP is started through the main APP, and the third party APP sends and receives messages through the SDK of the main APP. Does the third party APP receive messages through Service polling?

  android, question

The third party APP is started through the main APP, and the third party APP sends and receives messages to Intelligent hardware through the SDK of the main APP. Does the third party APP receive messages through Service polling? ?

There are more than N schemes for communication between Android inside programs, such as AIDL, broadcasting and so on. Polling is the next step.