getShareAnnotation method
Get share annotation object.
Parameter userId
User ID
Returns
- non-null: a pointer to the share annotation object
- others: Failure
获取共享标注对象
Parameter userId
用户ID
Returns
- 非空指针: 指向共享标注对象的指针。
- 空指针: 失败
Implementation
@override
Future<RtcAnnotation?> getShareAnnotation(String userId) async {
var annotationId =
await _invokeMethod('getShareAnnotation', {'userId': userId}) as String;
if (annotationId.isNotEmpty) {
annotations[annotationId] ??= RtcAnnotation(annotationId);
return annotations[annotationId];
}
return null;
}