Note that the earlier constructor’s infinite count cannot be used here, which enforces an itemCount. In essence, we construct two interweaved lists: one as the main List, one as the separator list. In the separated() constructor, we generate the list, and we can specify the separator between each item. The list items are constructed lazily, meaning only a specific number of list items are constructed, and when the user scrolls ahead, the earlier ones are destroyed. The constructor takes two main parameters:ġ) An itemCount for the number of items in the List and the itemBuilder for constructed each list item. The builder() constructor constructs the repeating list of items.
A ListView takes the list of children and makes it scrollable. ListView is the default constructor of a ListView class. Flutter ListViewįlutter provides ListView.builder which can be used to generate dynamic content from external sources. If we do not use ListView, it will throw a warning in a yellow line to indicate that we need to use some widget to show the proper user content, and that is why we will use the ListView widget Flutter. If the item’s length will be increased and reach the limit where we need to scroll down the page, then we need to display the scrollbar to scroll down the page quickly. So, when the button is pressed, the Widget state will change, and the UI will be re-rendered, and we will see the products list inside the mobile screen. In this tutorial, we will create a button widget, and when the button is pressed, it will add an item to the List and display that List on the mobile screen. What we will build using Flutter ListView Most of the time, dynamic behavior is achieved by changing the contents displayed in the body. Unless the app is fundamental and created for learning purposes, it will always use dynamic data, i.e., the contents of a screen will change based on user actions and the change in network data.
Flutter provides ListView.Builder() constructor, which can be used to generate dynamic content from external sources.
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