How to get Dismissable dragged amount before it's dismissed - Flutter

Question

The Dismissible widget in Flutter gives you an onDismissed: (direction) {....} to tell you the direction it was dragged after it has been dismissed. How can I get the direction (or delta) the widget is currently being dragged?

I tried wrapping it in a GestureDectecor() which has onHorizontalDragStart: etc but it seems to stop the Dismissible from working (i.e. you can't drag it)

score 10 · Answer 1 · answered Jan 01 '19 at 17:52

10

Wrap your Dismissible widget inside Listener and use the onPointerMove callBack.

  Listener(
            onPointerMove: (PointerMoveEvent event) {
              print("Event : $event");
            },
            child: Dismissible(
             ...
             ,
            ),
          )

answered Jan 01 '19 at 17:52

diegoveloper

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PointerMoveEvent contains a `delta`. For more info: https://api.flutter.dev/flutter/gestures/PointerMoveEvent-class.html – MSpeed Sep 02 '19 at 09:08

score 1 · Accepted Answer · answered Aug 27 '23 at 15:38

1

Dismissible has onUpdate callback that reports progress:

onUpdate: (details) {
  print("onUpdate : ${details.progress}");
},

answered Aug 27 '23 at 15:38

Andrey Gordeev

30,606
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How to get Dismissable dragged amount before it's dismissed - Flutter

2 Answers2