Flutter onTap method for Containers

Question

Been developing a flutter app and dynamicly building some containers from some Firebase data. I wanted to know if there is a way to get a onTap method for containers (or any widget which is not a button ?

Here is a code sample :

  child: new Container(

    //INSERT ONTAP OR ONPRESSED METHOD HERE

    margin: const EdgeInsets.symmetric(vertical: 10.0),
    child: new Row(
      crossAxisAlignment: CrossAxisAlignment.start,
      children: <Widget>[
        new Container(
          margin: const EdgeInsets.only(right: 16.0),
          child: new GoogleUserCircleAvatar(snapshot.value['images'][0]),
        ),
        new Column(
          crossAxisAlignment: CrossAxisAlignment.start,
          children : [
            new Container(
              padding: const EdgeInsets.only(bottom: 8.0),
              child: new Text("${snapshot.value['name']}",
                style: new TextStyle(
                  fontWeight: FontWeight.bold,
                ),
              ),
             ),
            new Text("${snapshot.value['description']}",
              style: new TextStyle(
                color: Colors.grey[500],
              ),
            ),
          ]
        )
      ],
    ),

Solution 1

You can wrap your Container in an InkWell or GestureDetector. The difference is that InkWell is a material widget that shows a visual indication that the touch was received, whereas GestureDetector is a more general-purpose widget that shows no visual indicator.

Solution 2

You could wrap container inside an Inkwell() or in GestureDetector() as below

InkWell(                        
  child: Container(...),                        
  onTap: () {                          
  print("tapped on container");
  },                      
);

Using the Gesture Detector

GestureDetector(
  onTap: () { print("Container was tapped"); },
  child: Container(...),
)

The only difference between the two is InkWell provides a ripple effect when the pointer is in contact with the screen while this is no such visual feedback with GestureDetector.

Solution 3

Screenshot:

---

You can use both GestureDetector and InkWell but I'll suggest you to go for InkWell as it can show ripple effects which a GestureDetector can't.

Differences between GestureDetector and InkWell:

1. Both share many features in common like onTap, onLongPress etc. The main difference is that GestureDetector has more controls like dragging and so on. On the other hand, InkWell provides some nice ripple effects.

2. You can use either of them according to your needs. If you want ripple effect choose InkWell, and if you need more controls then go with GestureDetector or even combine both of them.

   Material(
     color: Colors.blue, // Background color
     child: InkWell(
       splashColor: Colors.grey, // Splash color
       onTap: () => print("Container pressed"), // Handle your onTap here.
       child: Container(height: 200, width: 200),
     ),
   )
   

Solution 4

Apart from what others have said in answers, if you use Card inside InkWell, then InkWell will hide away the ripply effect on Android—you can see it happening in the background but not on the card itself.

Solution to that is to create an InkWell inside the Card.

return Card(
  child: InkWell(
    child: Row(
      // Row content
    ),
    onTap: () => {
      print("Card tapped.");
    },
  ),
  elevation: 2,
);

This will help you gain the ripple effect and perform the tap captures on Android too.

View more solutions

Comments

[Ito]

Another observation: InkWell spread out and cover all the container area to handle ontap event instead of GestureDector.

[Reza Esfandiari]

thanks, I used GestureDetector but onTap not worked in free space only work when I click on child widget in the container but Inkwell was very good.

[Donatas]

I had the same problem with GestureDetector. Surprisingly, by adding container's background color solved the problem.

[BuffK]

for Reza and Donatas,maybe you need to set "behavior" option of GestureDetector

[eikuh]

If you use background color "Colors.transparent", then the GestureDetector will recognize taps (but the visual appearance is still the same).

[crollywood]

As BuffK mentioned, setting behavior: HitTestBehavior.opaque fixes the empty-click issue. HitTestBehavior.translucent also fixes the issue and the difference is that the underlying widget will also receive event.

[Hafiz Nordin]

I've been cracking my head trying to add the ripple effect to a Container with a InkWell. Thanks for this!