我遇到了一个类似的问题，将一个Inkwell添加到现有的复杂小部件中，用一个容器包装一个带有颜色的BoxDecoration。通过添加材质和墨水井，墨水井仍然被盒子装饰遮挡，所以我只是让盒子装饰的颜色稍微不透明，这样墨水井就能被看到

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

InkWell()将永远不会显示涟漪效应，直到您添加

onTap : () {} 

或任何回调，如onDoubleTap, onLongPress等。

当你指定这个参数时，InkWell才会开始监听你的点击。

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'),
          ),
        ),
      ),

添加onTap:(){}监听器后，涟漪效应应该工作良好。如果你在InkWell()小部件中使用BoxShadow()，它就不工作了。

I ran into this same problem trying to create an alternating color of InkWell's in a ListView. In that particular case, there's a simple solution: wrap the alternates in a Container that uses a mostly transparent tint/brightness change -- the InkWell touch animation will still be visible beneath it. No Material needed. Note there are other issues when trying to work around this with a Materal -- e.g., it will override a DefaultTextStyle you're using with the default (it installs an AnimatedDefaultTextStyle) which is a huge pain.