# roomId property Null safety

String roomId
read / write

参与混流的 userId 所在roomId，null表示当前房间

## Implementation

    String roomId;

1. tencent_trtc_cloud
2. trtc_cloud_def
3. TRTCMixUser
4. roomId property

##### TRTCMixUser class

1. Constructors
2. TRTCMixUser
3. Properties
4. hashCode
5. height
6. pureAudio
7. roomId
8. runtimeType
9. streamType
10. userId
11. width
12. x
13. y
14. zOrder
15. Methods
16. noSuchMethod
17. toJson
18. toString
19. Operators
20. operator ==