.

lib/main.dart

@@ -59,6 +59,7 @@ void main() async {
   SystemChrome.setSystemUIOverlayStyle(SystemUiOverlayStyle.light.copyWith(
     statusBarColor: Colors.transparent,
   ));
+  await SystemChrome.setPreferredOrientations([DeviceOrientation.portraitUp]);
   final prefs = await SharedPreferences.getInstance();
   print(prefs.getString('token'));
   //测试token