android - Example of AIDL use

Question

to understand the AIDL in android, i want one real life example, means the at what scenario of development we need to use AIDL.

by reading the Android Docs ... It puts me in confusion and so many question, so it is hard to read whole doc for me, can anyone help me

1. is it for communicating with outside the phone.

2. or to communicating with different apps, (why we need to communicate with other apps)

3. what kind of service they are talking in docs

Answer 1

AIDL is used for Binder. Binder is a mechanism to do RPC calls on/from an Android Service.

When to use AIDL? When you need a Service. When do you need a Service? If you want to share data and control something in another application, you need a service using AIDL as an interface. (A Content Provider is used when sharing data only).

Services can be used within your application as the model roll in the MVC-pattern.