toString method

  1. @override
String toString()
override

A string representation of this object.

Some classes have a default textual representation, often paired with a static parse function (like int.parse). These classes will provide the textual representation as their string represetion.

Other classes have no meaningful textual representation that a program will care about. Such classes will typically override toString to provide useful information when inspecting the object, mainly for debugging or logging.

Implementation

@override
String toString() {
  return '''
Error: Could not find the correct Provider<$valueType> above this $widgetType Widget

This happens because you used a `BuildContext` that does not include the provider
of your choice. There are a few common scenarios:

- You added a new provider in your `main.dart` and performed a hot-reload.
To fix, perform a hot-restart.

- The provider you are trying to read is in a different route.

Providers are "scoped". So if you insert of provider inside a route, then
other routes will not be able to access that provider.

- You used a `BuildContext` that is an ancestor of the provider you are trying to read.

Make sure that $widgetType is under your MultiProvider/Provider<$valueType>.
This usually happens when you are creating a provider and trying to read it immediately.

For example, instead of:

```
Widget build(BuildContext context) {
  return Provider<Example>(
    create: (_) => Example(),
    // Will throw a ProviderNotFoundError, because `context` is associated
    // to the widget that is the parent of `Provider<Example>`
    child: Text(context.watch<Example>()),
  ),
}
```

consider using `builder` like so:

```
Widget build(BuildContext context) {
  return Provider<Example>(
    create: (_) => Example(),
    // we use `builder` to obtain a new `BuildContext` that has access to the provider
    builder: (context) {
      // No longer throws
      return Text(context.watch<Example>()),
    }
  ),
}
```

If none of these solutions work, consider asking for help on StackOverflow:
https://stackoverflow.com/questions/tagged/flutter
''';
}