我认为给容器添加颜色是在掩盖墨水的效果

https://api.flutter.dev/flutter/material/InkWell/InkWell.html

这段代码似乎可以工作

  body: new Center(
    child: new Container(
      child: new Material(
        child: new InkWell(
          onTap: (){print("tapped");},
          child: new Container(
            width: 100.0,
            height: 100.0,
          ),
        ),
        color: Colors.transparent,
      ),
      color: Colors.orange,
    ),
  ),

只要点击中间的方块。

编辑:我找到了错误报告。https://github.com/flutter/flutter/issues/3782

This is actually as expected, though we should update the docs to make it clearer. What's going on is that the Material spec says that the splashes are actually ink on the Material. So when we splash, what we do is we literally have the Material widget do the splash. If you have something on top of the Material, we splash under it, and you can't see it. I have wanted to add a "MaterialImage" widget that conceptually prints its image into the Material as well so that then the splashes would be over the image. We could have a MaterialDecoration which does something similar for a Decoration. Or we could have Material itself take a decoration. Right now it takes a color, but we could extend that to taking a whole decoration. It's not clear whether it's really material-spec-compatible to have a material with a gradient, though, so I'm not sure whether we should do that. In the short run, if you just need a workaround, you can put a Material on top of the container, with the material set to use the "transparency" type, and then put the ink well inside that.

--希克西

更新:Hixie去年合并了一个新的Ink解决方案。墨水提供了一种方便的方式溅在图像。

  testWidgets('Does the Ink widget render anything', (WidgetTester tester) async {
    await tester.pumpWidget(
      new Material(
        child: new Center(
          child: new Ink(
            color: Colors.blue,
            width: 200.0,
            height: 200.0,
            child: new InkWell(
              splashColor: Colors.green,
              onTap: () { },
            ),
          ),
        ),
      ),
    );


Material(
  color: Colors.grey[800],
  child: Center(
    child: Ink.image(
      image: AssetImage('cat.jpeg'),
      fit: BoxFit.cover,
      width: 300.0,
      height: 200.0,
      child: InkWell(
        onTap: () { /* ... */ },
        child: Align(
          alignment: Alignment.topLeft,
          child: Padding(
            padding: const EdgeInsets.all(10.0),
            child: Text('KITTEN', style: TextStyle(fontWeight: FontWeight.w900, color: Colors.white)),
          ),
        )
      ),
    ),
  ),
)

请注意:我没有测试新的墨水小部件。我从ink_paint_test中拷贝了代码。dart和Ink类文档

https://github.com/Hixie/flutter/blob/1f6531984984f52328e66c0cd500a8d517964564/packages/flutter/test/material/ink_paint_test.dart

https://github.com/flutter/flutter/pull/13900

https://api.flutter.dev/flutter/material/Ink-class.html

为材质添加透明颜色在我的案例中起作用:

  child: new Material(
    color: Colors.transparent
    child: new InkWell(
      onTap: (){},
      child: new Container(
        width: 100.0,
        height: 100.0,
        color: Colors.amber,
      ),
    ),
  ),

为了处理连锁反应，你应该使用以下规则:

onTap不应该为空(或空)。 InkWell必须在任何材质小部件中

我已经找到了这个解决方法。我认为它可以帮助你:

Material(
      color: Theme.of(context).primaryColor,
      child: InkWell(
        splashColor: Theme.of(context).primaryColorLight,
        child: Container(
          height: 100,
        ),
        onTap: () {},
      ),
    )

颜色被赋予材质小部件。它是小部件的默认颜色。 你可以使用Inkwell的splashColor属性来调整波纹效果的颜色。

child: Material(
color: Colors.transparent
child: InkWell(
  onTap: (){ print("this Ripple!";},
  splashColor: Colors.greenAccent,
  child: Container(
    height:100.0,
    color: Colors.white,
  ),
),
),

在InkWell之前添加材质，并将颜色设置为Colors.transparent。

创建一个支持tap的小部件。 将其包装在InkWell小部件中以管理点击回调和波纹 动画。

这是文档中提到的第二点

例子:

InkWell(
        child: TextButton(
          onPressed: () {},
          child: Text('Tapped'),
          ),
        ),
      ),