Flutter - Function is called OnTap: but not with Ontap () {...}-CodePudding

I'm pretty inexperienced with Flutter, I created a widget with this piece of code inside:

With code written like this: (the ToolModify function is not called)

final VoidCallback ToolModify;


onTap: () {
  // rest of the code
  widget.ToolModify;
},

instead, it is called with code written like this:

onTap: widget.ToolModify,

Can anyone explain to me why this happens?

Since I need to write other lines of code besides widget.ToolModify; how can i call the ToolModify function inside OnTap: () {...} ??

Hope someone can help me. Thanks :)

CodePudding user response：

you need to actually call the method:

onTap: () {
  // rest of the code
  widget.ToolModify(); // notice the brackets
},