get position of a widget in screen flutter
extension GlobalKeyEx on GlobalKey {
Rect get globalPaintBounds {
final renderObject = currentContext?.findRenderObject();
var translation = renderObject?.getTransformTo(null)?.getTranslation();
if (translation != null && renderObject.paintBounds != null) {
return renderObject.paintBounds
.shift(Offset(translation.x, translation.y));
} else {
return null;
}
}
}flutter component position absolute
List<String> todos = [...];
return new Stack(
children: <Widget>[
new ListView(
children: todos
.map((todo) => new ListTile(title: new Text(todo)))
.toList(),
),
new Positioned(
left: 30.0,
top: 30.0,
child: new Container(
width: 100.0,
height: 80.0,
decoration: new BoxDecoration(color: Colors.red),
child: new Text('hello'),
)
),
],
);Copyright © 2021 Codeinu
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