How to use extension methods in flutter

Question

I am trying to understand how to use extension methods in dart/flutter.

the extension

extension on Text {
  Text get boldCardTitle {
    
    return Text(this.data!, style:const TextStyle(fontSize: 20, fontWeight: FontWeight.w500) );
  }
  
}

I am trying to do something like this, and have it inherit those styles

Text('5401 Odom Ave \nFort Worth, TX 76114').boldCardTitle,

follow this answer https://stackoverflow.com/questions/58288235/how-do-i-use-dart-extension-functions — mohammad esmaili, Aug 08 '22 at 14:28
without naming the extension i am getting this error `The getter 'boldCardTitle' isn't defined for the type 'Text'. Try importing the library that defines 'boldCardTitle', correcting the name to the name of an existing getter, or defining a getter or field named 'boldCardTitle'.` which is what I was asking about in the answer below @Lebecca — bihire boris, Aug 08 '22 at 14:38

score 1 · Accepted Answer · answered Aug 08 '22 at 14:22

1

You have to give a name for the extension:

extension TextExtension on Text {
  ...
}

answered Aug 08 '22 at 14:22

Roslan Amir

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can I just ask why a name if I don't have to call the name? – bihire boris Aug 08 '22 at 14:31
An extension is like a subclass. When you extends a class you must give a name to the subclass. – Roslan Amir Aug 09 '22 at 09:34

How to use extension methods in flutter

1 Answers1