Flutter about Dismissible class - flutter

Question

First of all, I have class CheckList, in it I have list checkLists and many other variablse like name,position and others, in this list i have CheckList objects.
So in Dismissible key i pass CheckList.checkLists[index] but i got this error
The argument type 'CheckList' can't be assigned to the parameter type 'Key'
Scaffold(
body: Container(
padding: EdgeInsets.all(14.0),
child: ListView.separated(
itemCount: CheckList.checkLists.length,
itemBuilder: (BuildContext Context, int index){
return Dismissible(
key: CheckList.checkLists[index],
child: InkWell(
),
);
},
separatorBuilder: (BuildContext context, int index) {
return Container(
height: 14,
);
}),
),
);
what i need to pass into key?
Second question
Item in ListView must looks like this. This is item from other ListView in my app but i need same with other data in new ListView item
Will my Dismissble item dismiss normaly with this type of code?
Scaffold(
body:
Container(
padding: EdgeInsets.all(14.0),
child: ListView.separated(
itemCount: CheckList.checkListtemplateXmlList.length,
itemBuilder: (BuildContext context, int index) {
return InkWell(
onTap: (){
CheckList checkList = CheckList();
CheckList.addCheckList(index,checkList);
showDialog(context: context, builder: (BuildContext context){
return AlertDialog(
title: Text('Добавить описание'),
content: TextField(
onChanged: (String value) async{
checkList.description = value;
},
),
actions: [
ElevatedButton(onPressed: () async{
await checkList.writeToFile();
setState(() {
CheckList.checkLists.add(checkList);
});
Navigator.pushNamedAndRemoveUntil(context, '/',(route) => false );
},
child: Text('Добавить'))
],
);
});
},
child: Container(
decoration: BoxDecoration(
border: Border.all(
color: Color.fromARGB(255, 141, 166, 255), width: 1),
borderRadius: BorderRadius.circular(10)),
width: 50,
height: 80,
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(
"${CheckList.checkListTempaltexmlNameList[index]}",
style: TextStyle(fontSize: 40),
)
],
),
),
);
},
separatorBuilder: (BuildContext context, int index) {
return Container(
height: 14,
);
}),
),
);

Answer 1

The key parameter needs a Key object.
You can either pass
UniqueKey() which will generate a unique key automatically for you
ValueKey(dynamic value) if you want to generate one from some variable. In you case that would be ValueKey(CheckList.checkLists[index]).