A lightweight alternative to the Scaffold
widget for avoiding the on-screen software keyboard. Automatically scrolls obscured TextField
child widgets into view on focus.
In the video above, every colored area is wrapped in its own KeyboardAvoider
.
A basic Placeholder
:
import 'package:keyboard_avoider/keyboard_avoider.dart';
class MyWidget extends StatelessWidget {
@override
Widget build(BuildContext context) {
return KeyboardAvoider(
child: Placeholder(),
);
}
}
A ListView
containing multiple TextFields
, with auto-scroll enabled:
import 'package:keyboard_avoider/keyboard_avoider.dart';
class MyWidget extends StatelessWidget {
final ScrollController _scrollController = ScrollController();
@override
Widget build(BuildContext context) {
return KeyboardAvoider(
autoScroll: true,
child: ListView.builder(
controller: _scrollController,
itemCount: 40,
itemBuilder: (context, index) {
return TextFormField(
initialValue: 'TextFormField ${index + 1}',
);
},
),
);
}
}
Flutter comes with a built-in Scaffold
widget that automatically adjusts the bottom padding of its body widget to accomodate the on-screen keyboard. However, it comes with 2 major caveats:
- It pushes all content up, which you may not want.
- It assumes that it fills the whole screen, which it may not.
In contrast, you can apply the KeyboardAvoider
selectively to only certain widgets, and it only insets its bottom padding
by the actual amount obscured by the keyboard.
To auto-scroll to a focused widget such as a TextField
, set the autoScroll
property to true
. If child
is not a ScrollView
, it is automatically embedded in a SingleChildScrollView
to make it scrollable.