问题描述
我的代码中出现了一个非常奇怪的错误。当我尝试使用 _dialogPlatform = newValue;或 _dialogGameName = newValue;我通过 VS 代码得到一个红色突出显示,说我不能将具有某种类型的值分配给相同类型的变量。 完全错误:无法将“平台”类型的值分配给“平台”类型的变量。 尝试更改变量的类型,或将右侧类型转换为“平台”。 请帮忙。
import 'package:all_gta_cheats/enums/enums.dart';
import 'package:all_gta_cheats/widgets/drop_down_menu.dart';
import 'package:Flutter/material.dart';
class FilterDialogBox extends StatefulWidget {
const FilterDialogBox({
Key? key,required this.initialPlatformValue,required this.initialGameNameValue,required this.initialIsFavValue,required this.onApply,}) : super(key: key);
final Platform initialPlatformValue;
final GameNameEnum initialGameNameValue;
final bool initialIsFavValue;
final Function(
Platform platform,GameNameEnum gameNameEnum,bool isFav,) onApply;
@override
_FilterDialogBoxState createState() => _FilterDialogBoxState();
}
class _FilterDialogBoxState extends State<FilterDialogBox> {
final TextStyle actionsTextStyle = TextStyle(fontSize: 18);
late GameNameEnum _dialogGameName;
late Platform _dialogPlatform;
late bool _dialogIsFav;
@override
void initState() {
super.initState();
_dialogGameName = widget.initialGameNameValue;
_dialogPlatform = widget.initialPlatformValue;
_dialogIsFav = widget.initialIsFavValue;
}
@override
Widget build(BuildContext context) {
return AlertDialog(
title: Text('Search Filter'),content: SingleChildScrollView(
child: ListBody(
children: <Widget>[
DropDownMenu<Platform>(
initialValue: _dialogPlatform,itemsList: Platform.values,onChanged: <Platform>(newValue) {
//Platform value changes here
_dialogPlatform = newValue;
print(newValue.toString());
},),DropDownMenu<GameNameEnum>(
initialValue: _dialogGameName,itemsList: GameNameEnum.values,onChanged: <GameNameEnum>(newValue) {
//GameName value changes here
_dialogGameName = newValue;
print(newValue.toString());
},SwitchListTile(
title: const Text('Show only favourites'),value: _dialogIsFav,onChanged: (bool value) {
setState(() {
_dialogIsFav = value;
print(_dialogIsFav);
//widget.dialogIsFav = value;
});
},secondary: const Icon(Icons.favorite),],actions: <Widget>[
TextButton(
child: Text(
'Cancel',style: actionsTextStyle,onpressed: () {
Navigator.of(context).pop();
},TextButton(
child: Text(
'Apply',onpressed: () {
widget.onApply(_dialogPlatform,_dialogGameName,_dialogIsFav);
Navigator.of(context).pop();
},);
}
}
解决方法
暂无找到可以解决该程序问题的有效方法,小编努力寻找整理中!
如果你已经找到好的解决方法,欢迎将解决方案带上本链接一起发送给小编。
小编邮箱:dio#foxmail.com (将#修改为@)