flutter 如何使用svg图片作为TabBar的indicator指示器
时间: 2024-05-06 16:22:10 浏览: 311
Flutter中使用SVG图片作为TabBar的indicator指示器需要使用flutter_svg插件。以下是实现步骤:
1. 在pubspec.yaml文件中添加flutter_svg插件:
```yaml
dependencies:
flutter_svg: ^0.19.2
```
2. 导入flutter_svg:
```dart
import 'package:flutter_svg/flutter_svg.dart';
```
3. 在TabBar中使用SVG图片作为indicator:
```dart
TabBar(
indicator: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(30),
boxShadow: [
BoxShadow(
color: Colors.grey.withOpacity(0.5),
spreadRadius: 2,
blurRadius: 5,
offset: Offset(0, 2),
),
],
image: DecorationImage(
image: SvgPicture.asset(
'assets/my_icon.svg',
fit: BoxFit.contain,
color: Colors.blue,
).pictureProvider,
),
),
tabs: [
Tab(
text: 'Tab 1',
),
Tab(
text: 'Tab 2',
),
Tab(
text: 'Tab 3',
),
],
),
```
其中,SVG图片需要使用SvgPicture.asset方法进行加载,并通过pictureProvider获取图片的Provider。然后,将该Provider作为DecorationImage的image属性值,即可使用SVG图片作为TabBar的indicator指示器。
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