flutter 报错记录:navigator.dart‘: Failed assertion: line 4041 pos 12: ‘!_debugLocked‘: is not true.

 做项目时登录页遇到的一个小问题,我在请求完成后要跳转到页面,代码如下

LoginApi.phoneLogin(phone: phoneNum, code: identifyingCode, checkid: codeId).then((userToken){
  print(userToken);
  Navigator.pop(context);
  SPUtils.saveUserToken(userToken);
  Navigator.pushReplacement(
      context, MaterialPageRoute(builder: (context) => (BaseTabBar())));
}).catchError((e){
  print(e);
});

遇到报错信息: 'package:flutter/src/widgets/navigator.dart': Failed assertion: line 4041 pos 12: '!_debugLocked': is not true.

因为是登录页面跳转所以使用的是Navigator.pushReplacement,查到原因是不能在build的过程中跳转,需要给跳转加一个延时。

解决代码如下:

 

LoginApi.phoneLogin(phone: phoneNum, code: identifyingCode, checkid: codeId).then((userToken){
  print(userToken);
  Navigator.pop(context);
  SPUtils.saveUserToken(userToken);
  Future.delayed(Duration.zero, () {
    Navigator.pushReplacement(
        context, MaterialPageRoute(builder: (context) => (BaseTabBar())));
  });
}).catchError((e){
  print(e);
});