场景
更新Flutter到2.0后，某些代码或三方库编译出错。
../../../dev_tools/flutter/.pub-cache/hosted/pub.flutter-io.cn/city_pickers-0.1.18/lib/src/cities_selector/cities_selector.dart:387:9: Error: No named parameter with the name 'resizeToAvoidBottomPadding'. resizeToAvoidBottomPadding: false, ^^^^^^^^^^^^^^^^^^^^^^^^^^ ../sdk/flutter/packages/flutter/lib/src/material/scaffold.dart:1437:9: Context: Found this candidate, but the arguments don't match. const Scaffold({ ^^^^^^^^ ../../../dev_tools/flutter/.pub-cache/hosted/pub.flutter-io.cn/city_pickers-0.1.18/lib/src/mod/inherit_process.dart:20:20: Error: The method 'inheritFromWidgetOfExactType' isn't defined for the class 'BuildContext'. - 'BuildContext' is from 'package:flutter/src/widgets/framework.dart' ('../../../apps/flutter/packages/flutter/lib/src/widgets/framework.dart'). Try correcting the name to the name of an existing method, or defining a method named 'inheritFromWidgetOfExactType'. context.inheritFromWidgetOfExactType(PageProvider); ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
解决方案
查看具体代码发现，是Scaffold的命名参数未定义，BuildContext的方法未定义 。
resizeToAvoidBottomPadding是Scaffold以前版本的参数，Flutter 2.0后改成了resizeToAvoidBottomInset。
同样的地,inheritFromWidgetOfExactType是BuildContext以前的方法，2.0后改成了dependOnInheritedWidgetOfExactType。
Scaffold( backgroundColor: Colors.white, // resizeToAvoidBottomPadding: false, resizeToAvoidBottomInset: false, )
//context.inheritFromWidgetOfExactType(PageProvider); context.dependOnInheritedWidgetOfExactType(aspect: PageProvider);
