解决Flutter报错The named parameter |method ‘xxxx‘ isn‘t defined.

客官°小女子只卖身不卖艺 2023-01-13 09:12 273阅读 0赞

# 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);