appId property Null safety

String appId
read / write

The App ID issued to you by Agora. See How to get the App ID. Only users in apps with the same App ID can join the same channel and communicate with each other. Use an App ID to create only one RtcEngine instance. To change your App ID, call destroy to destroy the current RtcEngine instance and then call createWithContext to create an RtcEngine instance with the new App ID.

Implementation

String appId;