我的第一个屏幕是登录屏幕，它需要检查用户是否已登录才能直接打开主屏幕，但是使用此检查却出现错误。
我正在检查initState，条件返回的是true，所以看起来问题出在导航器上。
如果用户已登录，跳过第一个屏幕的正确方法是什么？
错误：
I/flutter (20803): ??? EXCEPTION CAUGHT BY WIDGETS LIBRARY ????????????????????????????????????????????????????????????
I/flutter (20803): The following assertion was thrown building Navigator-[GlobalObjectKey<NavigatorState>
I/flutter (20803): _WidgetsAppState#8ce27](dirty, state: NavigatorState#db484(tickers: tracking 2 tickers)):
I/flutter (20803): 'package:flutter/src/widgets/navigator.dart': Failed assertion: line 2106 pos 12: '!_debugLocked':
I/flutter (20803): is not true.
I/flutter (20803): Either the assertion indicates an error in the framework itself, or we should provide substantially
I/flutter (20803): more information in this error message to help you determine and fix the underlying cause.
码： …