如何将一个 Future 的结果传递给另一个 Future？

Question

如何将 Future convertGroup 的结果传递给 Future getList() 以获取列表中的结果？

class GroupRepository extends BaseRepository<GroupDao, GroupDBData, Group> {
      @override
      GroupDao dao = injector<AppDb>().groupDao;
      @override
      BaseConverter<GroupDBData, Group> converter = GroupDbConverter();
      Future<Group> convertGroup(Group group) async {
        final convert = converter.outToIn(group);
        final groupId = await dao.insert(convert);
        Group groupWithID = Group(
          id: groupId,
          groupName: group.groupName,
        );
      
        return groupWithID;
      }

      Future<List<Group>> getList(Group group) async {
        final List<Group> groups = [];
        groups.add(groupWithID);
        
        return groups;
      }
    }

Answer 1

您只需在 getList 方法中 await convertGroup() 即可。例如：

Future<List<Group>> getList(Group group) async {
  final List<Group> groups = [];
  final groupWithId = await convertGroup(group);

  groups.add(groupWithId);

  return groups;
}

如何将一个 Future 的结果传递给另一个 Future？

How to pass the result of a Future to another Future?

dart

flutter