FLUTTER ERROR || Failed assertion: 'initialValue == null || controller == null': is not true.

Publicado el: 11 enero 2024
en el canal de: IFASTEK TV

275

In flutter, when you are trying to use both initial value and controller in your textform field

SOLUTION BY CopsOnRoad FROM STACK OVER FLOW
https://stackoverflow.com/questions/5...
You can't use both initialValue and controller at the same time. So, it's better to use controller as you can set default text in its constructor.

Here is an example.

// Create the controller.
final controller = TextEditingController(text: "Your initial value");

Widget build(BuildContext context) {
return TextFormField(
controller: controller, // Assign it here.
// ...
);
}
To get the value entered by the user, use:

controller.text

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