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https://github.com/marcelgarus/implicitly_animated_list

A Flutter widget that implicitly animates a list whenever it rebuilds with new items.
https://github.com/marcelgarus/implicitly_animated_list

Last synced: 8 days ago
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A Flutter widget that implicitly animates a list whenever it rebuilds with new items.

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README

        

Often, your lists represent some kind of data.

You can just pass the original list data to the `ImplicitlyAnimatedList` as
well as an `itemBuilder` for building a widget from one data point and it'll
animate whenever the data changes:

```dart
ImplicitlyAnimatedList(
// When you change items of this list and hot reload, the list animates.
itemData: [1, 2, 3, 4],
itemBuilder: (_, number) => ListTile(title: Text('$number')),
),
```

It works with all classes and works well with `StreamBuilder`:

```dart
class User {
String firstName;
String lastName;

// The ImplicitlyAnimatedList uses the == operator to compare items.
bool operator== (Object other) => other is User
&& firstName == other.firstName
&& lastName == other.lastName;
}

...

StreamBuilder>(
stream: someSource.usersStream,
builder: (context, snapshot) {
if (!snapshot.hasData) {
return ...;
}
return ImplicitlyAnimatedList(
itemData: snapshot.data,
itemBuilder: (context, user) {
return ListTile(title: Text('${user.firstName} ${user.lastName}'));
}
);
}
),
```

Here's an example that generates random numbers and animates from one state to the next (notice it's only 10 fps because of being a gif):

![example showcase](showcase.gif)