InkWell not showing ripple effect - flutter

Question

Tapping the container triggers the onTap() handler but does not show any ink splash effect.
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(widget.title),
),
body: new Center(
child: new InkWell(
onTap: (){print("tapped");},
child: new Container(
width: 100.0,
height: 100.0,
color: Colors.orange,
),
),
),
);
}
}
I tried putting the InkWell inside the Container as well but in vain.

Answer 1

I think adding color to the container is covering over the ink effect
https://api.flutter.dev/flutter/material/InkWell/InkWell.html
This code seems to work
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,
),
),
just click the middle square.
Edit: I found the bug report. 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.
--hixie
Update: Hixie merged a new Ink solution last year. The Ink provides a convenient way to splash over images.
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)),
),
)
),
),
),
)
Please Note: I did not test the new Ink Widget. I coped the code from ink_paint_test.dart and the Ink class docs
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

Answer 2

Screenshot:
Use Ink widget wrapped in an InkWell.
InkWell(
onTap: () {}, // Handle your onTap
child: Ink(
width: 200,
height: 200,
color: Colors.blue,
),
)

Answer 3

The InkWell widget must have a Material widget as an ancestor otherwise it can't show effects. E.g.:
Material(
child : InkWell(
child : .....
you have to add onTap method to see the actual effects as like
Buttons {RaisedButton,FlatButton etc}.
e.g -> Material(
child : InkWell(
onTap : (){}
child : .....
Let's come to the main points see some examples below and try to understand
the actual concepts of InkWell.
In Below example Material is parent of InkWell with onTap but it still not working. Please try to understand the concept of it. You should provide some margin to container or other widget to show the effects. Actually below code working fine but we can't see because we did not provide any margin or align so it has no space to show the effects.
Widget build(BuildContext context) {
return Center(
child: Material(
child: new InkWell(
onTap: () {
print("tapped");
},
child: new Container(
width: 100.0,
height: 100.0,
color: Colors.orange,
),
),
),
);
}
Below example show InkWell effects only to upwards because we provide space {margin}.
Widget build(BuildContext context) {
return Center(
child: Material(
child: new InkWell(
onTap: () {
print("tapped");
},
child: new Container(
margin: EdgeInsets.only(top: 100.0),
width: 100.0,
height: 100.0,
color: Colors.orange,
),
),
),
);
}
Below exp. show the effects in all the page because center create margin from all the side. Centre align it's child widget from top, left, right and bottom.
Widget build(BuildContext context) {
return Center(
child: Material(
child: new InkWell(
onTap: () {
print("tapped");
},
child: Center(
child: new Container(
width: 100.0,
height: 100.0,
color: Colors.orange,
),
),
),
),
);
}

Answer 4

InkWell() will never show the ripple effect until you add the
onTap : () {}
or any of the callbacks like onDoubleTap, onLongPress etc.
parameter inside the InkWell as it starts listening to your taps only when you specify this parameter.

Answer 5

I have found this solution for me. I think it can help you:
Material(
color: Theme.of(context).primaryColor,
child: InkWell(
splashColor: Theme.of(context).primaryColorLight,
child: Container(
height: 100,
),
onTap: () {},
),
)
Color is given to Material widget. It is the default color of your widget.
You can adjust color of ripple effect using splashColor property of Inkwell.

Answer 6

A better way is to use the Ink widget instead of any other widget.
Instead of defining color inside container you can define it in Ink widget itself.
Below code will work.
Ink(
color: Colors.orange,
child: InkWell(
child: Container(
width: 100,
height: 100,
),
onTap: () {},
),
)
Do not forget to add a onTap: () {} in the InkWell else it will
not show the ripple effect too.

Answer 7

If you want a Ripple Effect on any widget just:
1- Wrap widget with Material and Inkwell.
2- set color to widget from Material.
3- Never set color to the widget you want it to ripple.
Material (
color: const Color(0xcffFF8906),
child: InkWell(
ontap:() { },
child: Container(
color: Colors.transparent,
height: 80,
width: 80,
)

Answer 8

Quick solution in easy words:
This solution works in any place of the widget tree.
Just add additional Material before InkWell, like so:
return Container(
.......code.......
),
child: Material(
type: MaterialType.transparency,
child: InkWell(
onTap: () {},
child: Container(
.......code.......
),
),
),
);
Reference:
https://api.flutter.dev/flutter/material/InkWell-class.html
Section called "The ink splashes aren't visible!"

Answer 9

Wrap the InkWell with Material and use there the color that you need:
class _MyHomePageState extends State<MyHomePage> {
#override
Widget build(BuildContext context) {
return new Scaffold(
appBar: new AppBar(
title: new Text(widget.title),
),
body: new Center(
child: Material(
color: Colors.orange,
child: new InkWell(
onTap: (){ print("tapped"); },
child: new Container(
width: 100.0,
height: 100.0,
),
),
),
),
);
}
}

Answer 10

This is the best way I found and use it always. You can try it.
Wrap your Widget with InkWell
Wrap InkWell with Material
Set the opacity 0% anyhow. e.g.: color: Colors.white.withOpacity(0.0),
Material(
color: Colors.white.withOpacity(0.0),
child: InkWell(
child: Container(width: 100, height: 100),
onTap: (){print("Wow! Ripple");},
),
)

Answer 11

This is working for me:
Material(
color: Colors.white.withOpacity(0.0),
child: InkWell(
splashColor: Colors.orange,
child: Text('Hello'), // actually here it's a Container wrapping an image
onTap: () {
print('Click');
},
));
After trying many answers here, it was a combination of:
Setting splashColor
Wrapping InkWell in Material(color: Colors.white.withOpacity(0.0), ..)
Thanks to the answers here that make those 2 points

Answer 12

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

Answer 13

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.

Answer 14

After you added onTap:(){} listener, ripple effect should work fine. It doesn't work if you use BoxShadow() with in the InkWell() widget.

Answer 15

I was able to make my situation work by using a Stack.
Stack(
children: [
MyCustomWidget(), // <--- Put this on bottom
Material(
color: Colors.transparent,
child: InkWell(
onTap: () {},
child: Ink(
width: 100,
height: 100,
),
),
),
],
),
The reason that the other answers on this page weren't working for me is that my custom widget hid the ink effect and I didn't have a plain image (so I couldn't use Ink.image).
Edit:
You still may be able to use Ink.image if you convert the image to the right format.

Answer 16

now using MaterialButton, in newer version flutter
Widget build(BuildContext context) {
return Padding(
padding: const EdgeInsets.symmetric(horizontal: 16.0),
child: MaterialButton(
child: Text(
labelText,
style: TextStyle(fontSize: 22),
),
onPressed: () {},
color: backgroundColor,
height: 45,
minWidth: double.infinity,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(
Radius.circular(16),
),
),
),
);
}

Answer 17

For handling ripple effect you should use the below rules:
onTap shouldn't be null (or empty).
InkWell must be inside any of the Material Widgets

Answer 18

Single Line:
Use splashColor widget in an InkWell.
InkWell(
onTap: () {}, // Handle your onTap
splashColor: Colors.grey,
child: Container(
width: 200,
height: 200,
),
)

Answer 19

You might have set the properties in theme or parent of the material
ThemeData(
...
splashFactory: NoSplash.splashFactory,
...
)
if you don't want splash effect for specific use it explicitly
InkWell(
splashFactory: NoSplash.splashFactory,
...
child: Row(
...
)
);

Answer 20

Make sure you have not added the below properties in the material theme:
(In my case this was the issue)
splashColor: Colors.transparent
splashFactory: NoSplash.splashFactory
eg:-
MaterialApp(
home:......,
theme: ThemeData(
splashFactory: NoSplash.splashFactory, // Remove this
splashColor: AppColors.transparent, // Remove this OR Change the color
......
),
)

Answer 21

Create a widget that supports tap.
Wrap it in an InkWell widget to manage tap callbacks and ripple
animations.
that's point 2 mentioned in documentation
example:
InkWell(
child: TextButton(
onPressed: () {},
child: Text('Tapped'),
),
),
),

Answer 22

I was hit by a similar problem adding an Inkwell to an existing complex Widget with a Container wrapping a BoxDecoration with a color. By adding the Material and Inkwell in the way suggested the Inkwell was still obscured by the BoxDecoration so I just made the BoxDecoration's color slightly opaque which allowed the Inkwell to be seen

Answer 23

The solution to circular widgets, do like below:
Material(
color: Colors.transparent,
child: Container(
alignment: Alignment.center,
height: 100,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
IconButton(
enableFeedback: true,
iconSize: 40,
icon: Icon(
Icons.skip_previous,
color: Colors.white,
size: 40,
),
onPressed: () {}),
IconButton(
iconSize: 100,
enableFeedback: true,
splashColor: Colors.grey,
icon: Icon(Icons.play_circle_filled, color: Colors.white, size: 100),
padding: EdgeInsets.all(0),
onPressed: () {},
),
IconButton(
enableFeedback: true,
iconSize: 40,
icon: Icon(
Icons.skip_next,
color: Colors.white,
size: 40,
),
onPressed: () {}),
],
),
),
)

Answer 24

For me it was another problem. InkWell was not showing ripple effect when i had onTap function as parameter of my widget defined as below.
Function(Result) onTapItem;
...
onTap: onTapItem(result),
I don't know what's the difference, but next code is working well.
onTap: (){ onTapItem(result); },

Answer 25

Adding transparent color to Material worked in my case:
child: new Material(
color: Colors.transparent
child: new InkWell(
onTap: (){},
child: new Container(
width: 100.0,
height: 100.0,
color: Colors.amber,
),
),
),

Answer 26

Instead of providing the color for the Container widget, provide color for the Material widget.
Material(
color: Colors.orange,
child: InkWell(
onTap: () {
print("tapped");
},
child: Container(
width: 100.0,
height: 100.0,
),
),
)