Dismissing a Dismissible with Flutter/Dart

Question

In the majority of the Dismissible examples provided by Flutter, they are dismissing items within a ListView. For example, this.

What I am currently doing is this:

Answer 1

Make sure the values you're passing to the key parameters are unique as well. And DO NOT use the index of an item. Since after removing an item from an array, the array will shift the positions of the items, the Dismissable widget will not recognize the removal of an item.