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注意:无特殊说明,Flutter版本及Dart版本如下:
- Flutter版本: 1.12.13+hotfix.5
- Dart版本: 2.7.0
InkWell
InkWell组件在用户点击时出现“水波纹”效果,InkWell简单用法:
InkWell(
onTap: (){},
child: Text('这是InkWell点击效果'),
)
onTap
是点击事件回调,如果不设置无法出现“水波纹”效果,效果如下:
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设置水波纹颜色:
InkWell(
onTap: () {},
splashColor: Colors.red,
...
)
效果如下:
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设置高亮颜色颜色:
InkWell(
onTap: () {},
highlightColor: Colors.blue,
...
)
高亮颜色是按住时显示的颜色,效果如下:
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给字体添加边距和圆角边框,扩大“水波纹”效果:
InkWell(
onTap: (){},
child: Container(
padding: EdgeInsets.symmetric(horizontal: 20,vertical: 8),
decoration: BoxDecoration(
border:Border.all(color: Colors.blue),
borderRadius: BorderRadius.all(Radius.circular(30))
),
child: Text('这是InkWell点击效果'),
),
)
效果如下:
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发现“水波纹”超出的了圆角边框,如何解决这个问题呢?Ink隆重登场。
Ink
Ink的官方解释:
A convenience widget for drawing images and other decorations on [Material] widgets, so that [InkWell] and [InkResponse] splashes will render over them.
简单翻译:Ink控件用于在[Material]控件上绘制图像和其他装饰,以便[InkWell]、[InkResponse]控件的“水波纹”效果在其上面显示。
上面的问题修改代码如下:
Ink(
decoration: BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topLeft,
end: Alignment.bottomRight,
colors: [Color(0xFFDE2F21), Color(0xFFEC592F)]),
borderRadius: BorderRadius.all(Radius.circular(20))),
child: InkWell(
borderRadius: BorderRadius.all(Radius.circular(20)),
child: Container(
padding: EdgeInsets.symmetric(vertical: 8, horizontal: 20),
child: Text(
'这是InkWell的点击效果',
style: TextStyle(color: Colors.white),
),
),
onTap: () {},
),
)
效果如下:
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更多相关阅读:
- Flutter系列文章总览
- Flutter Widgets 之 Expanded和Flexible
- Flutter Widgets 之 AnimatedList
- Flutter Widgets 之 SliverAppBar
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