我从服务器获取一个 int Id，它在颤振的 HTTP 请求中，这没问题，我想将此值保存在一个变量中，但是当我调用返回值时，我收到此错误实例 'Future' ，有什么建议吗？ ? 这是代码
child: RaisedButton(onPressed:() {
CurrentPrjId= SaveProject();
print("CurrentPrjId Is saved CurrentPrjId :::::::: " );
print(CurrentPrjId);
Navigator.of(context).pushReplacementNamed('/AllUSerStories');
}
//Save Project
Future SaveProject() async {
//SaveProjectResult has the id of the current created project which i need that for its user stories
var SaveProjectResult = await GetPostProjects().createProject(_ProjectnameController.text, _CustomernameController.text, _dropNewItem, _dropNewItem2, _StartDateController.text, _EndDateController.text,);
print(":::::::::::::::::::::::::::::::The Project Is Created And Here Its ID In SaveProject:::::::::");
print(SaveProjectResult);
return SaveProjectResult;
}