Flutter Tutorial | Listview in flutter | Flutter Listview | How to create a Simple listview Flutter

ListView is the most commonly used scrolling widget. It displays its children one after another in the scroll direction. In the cross axis, the children are required to fill the ListView.

If non-null, the itemExtent forces the children to have the given extent in the scroll direction.

If non-null, the prototypeItem forces the children to have the same extent as the given widget in the scroll direction.

Specifying an itemExtent or an prototypeItem is more efficient than letting the children determine their own extent because the scrolling machinery can make use of the foreknowledge of the children's extent to save work, for example when the scroll po

sition changes drastically.

You can't specify both itemExtent and prototypeItem, only one or none of them.

There are four options for constructing a ListView:

The default constructor takes an explicit List of children. This constructor is appropriate for list views with a small number of children because constructing the List requires doing work for every child that could possibly be displayed in the list view instead of just those children that are actually visible.

The ListView.builder constructor takes an IndexedWidgetBuilder, which builds the children on demand. This constructor is appropriate for list views with a large (or infinite) number of children because the builder is called only for those children that are actually visible.

The ListView.separated constructor takes two IndexedWidgetBuilders: itemBuilder builds child items on demand, and separatorBuilder similarly builds separator children which appear in between the child items. This constructor is appropriate for list views with a fixed number of children.

The ListView.custom constructor takes a SliverChildDelegate, which provides the ability to customize additional aspects of the child model. For example, a SliverChildDelegate can control the algorithm used to estimate the size of children that are not actually visible.

To control the initial scroll offset of the scroll view, provide a controller with its ScrollController.initialScrollOffset property set.

By default, ListView will automatically pad the list's scrollable extremities to avoid partial obstructions indicated by MediaQuery's padding. To avoid this behavior, override with a zero padding property.

Flutter ListView

Listview in flutter is a widget used to display items in a linear manner. For example, list view is used in apps like zomato & swiggy to display a list of restaurants. Since it is a scrollable widget we can display multiple items on the same screen. If the scroll direction is vertical the children will be arranged one after another from top to bottom. Every child should fill the listview horizontally. When the scroll direction is horizontal the children will be arranged from left to right. Generally, we will use ListTiles as children for a listview but we can use any widget instead.

Flutter provides a widget called ListView which helps us in adding a list view to our application. The most common usage of ListView is the FileManager app. It displays all the directories and files one after another in a list. In this tutorial, we will learn how to use the ListView widget in flutter with example. Creating ListView In Flutter

In Flutter, ListView class offers 4 types of constructors which help us create ListView based on different cases. Let’s see them below.

the basics of using a ListView and GridView in Flutter. This article is meant as a more detailed exploration on the ListView class, ScrollPhysics and tweaks and optimisations for the general widget.

A ListView in Flutter is a linear list of scrollable items. We can use it to make a list of items scrollable or make a list of repeating items. Exploring the types of ListView

We’ll start with looking at the types of ListViews and later look at the other features and neat modifications for it.

Let’s look at the types of ListViews there are:

ListView
ListView.builder
ListView.separated
ListView.custom

Let’s go around exploring these types one by one: ListView

This is the default constructor of the ListView class. A ListView simply takes a list of children and makes it scrollable.

Flutter Tutorial | Listview in flutter | Flutter Listview | How to create a Simple listview Flutter Flutter Tutorial | Listview in flutter | Flutter Listview | How to create a Simple listview Flutter Flutter Tutorial | Listview in flutter | Flutter Listview | How to create a Simple listview Flutter

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