client

AIDL Color Client

This project demonstrates how to connect to a remote AIDL service from another Android application.

The client app binds to the server app service and requests a random color.

The returned color is then applied to the Compose UI background.

What This Project Demonstrates

• Connecting to remote services
• Using AIDL interfaces
• Cross-app Binder communication
• Updating Compose UI using remote data

Flow

1. Client binds to the remote service.
2. Service connection returns the Binder object.
3. Client calls getColor().
4. Server returns a random color.
5. UI background updates with the received color.

Important Notes

• Android 11+ requires package visibility.
• The client app must declare the server package inside:

<queries>
    <package android:name="com.devbilal.ipc" />
</queries>

• Always check the result of bindService() during debugging.
• onServiceConnected() will not be called if binding fails.
• The service action name must exactly match the server manifest action.
• The server package name inside setPackage() must match the installed app package.
• Both apps must contain the exact same AIDL contract.
• Compose UI updates require mutableStateOf() for recomposition.
• Remote calls can throw RemoteException, so they should be wrapped in try/catch.