Created
July 6, 2020 21:19
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| import 'package:evtrip/utils/my_future_nullable_builder.dart'; | |
| import 'package:flutter/widgets.dart'; | |
| class PreloadingImageBuilder extends StatefulWidget { | |
| final ImageProvider imageProvider; | |
| final AsyncWidgetBuilder<dynamic> builder; | |
| PreloadingImageBuilder({this.imageProvider, this.builder}); | |
| @override | |
| _PreloadingImageBuilderState createState() => _PreloadingImageBuilderState(); | |
| } | |
| class _PreloadingImageBuilderState extends State<PreloadingImageBuilder> { | |
| Future future; | |
| @override | |
| void didChangeDependencies() { | |
| super.didChangeDependencies(); | |
| if (this.future == null) { | |
| this.future = precacheImage(this.widget.imageProvider, context); | |
| } | |
| } | |
| @override | |
| Widget build(BuildContext context) { | |
| return MyFutureNullableBuilder( | |
| future: this.future, | |
| builder: this.widget.builder, | |
| ); | |
| } | |
| } |
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