Error: The method 'call' isn't defined for the class 'InkWell'-CodePudding

   InkWell tile({String? date}) {
return InkWell(
  child: SizedBox(
    height: 40,
    child: ListTile(
      title: Text(
        date?? 'Null',
        style: const TextStyle(fontSize: 16),
      ),
    ),
  ),

  onTap: (() {
    if(date != null){   setState(() {
dateController.text = date;     });}}),);

I have a tappable List Tile with the title variable 'date' which I will assign later, so I am going to pass this to another file as shown now:

randomParameter: anotherFile(
... 
tile(), // might be an error idk

inside file where tile widget will be imported to:

anotherFile(required InkWell tile){
const String today = 'Today';
        const String tmrw = 'Tomorrow';
        const String week = 'Next Week';
    ExpansionTile(children: [tile(today), tile(tmrw), tile(week)]) ////Error!

Error: The expression doesn't evaluate to a function, so it can't be invoked. The method 'call' isn't defined for the class 'InkWell'.

CodePudding user response：

The error says that another file doesnt evaluate to a function

For example a function will look like

void someFunction()
{
}

In this case you are adding an expansion tile to a parameter which i assume you are trying to return an ExpansionTile

If you wish to return a widget then you can try writing it like

Widget anotherFile(required InkWell tile){
 return ExpansionTile();
}

Now this method will return a wodget of type expansion tile

CodePudding user response：

change anotherFile(required InkWell tile){ to anotherFile(required InkWell Function(string) tile){