aidlSample 1. Run AIDLServer project 2. Run AIDLClient project 3. See the logcat and filter Alex 4. You wil get the result 2020-04-19 20:25:00.555 28181-28181/com.alex.aidlclient D/Alex: onServiceConnected 2020-04-19 20:25:00.555 28181-28181/com.alex.aidlclient D/Alex: get value: 99