title: How can I show just 5 items of a list in flutter
body: <p>I want to show a list in flutter and I'm using <code>listView</code>. The thing is I just want to show 5 items, by this I mean that When the user scrolls down I want to remove from the beginning index and add another widget to the end of the list that contains my widgets, but when I do that the ScrollView instead of staying where it is(for example showing the item in the index 3) it goes to the next item(it jumps where the item 4 is).</p>
  <p>My data is kinda expensive and I can't keep them I have to remove them from the beginning. I'm really stuck I would really appreciate some help</p>