android - Sending simple data with notification to another app -


i'm working on 2 seperate apps need @ point exchange messages, both apps share mysql database, want first app able send data 1 of other app's users (specified id, email or phone number ), , last able reply request accepting or rejecting button click.

now, don't know best:

  • something similar chat ?is possible extract necessary data rest of chat message ?
  • a broadcast.
  • a push notification.
  • or else ?

help me please i'm total newbie, use expert opinion.

what describing every other chat app exists. can suggest read code example idea how approach this:


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