What type ListView widget has the following properties: itemCount and itemBuilder?*1 pointListView.customListView.builderListViewListView.separated
Question
What type ListView widget has the following properties: itemCount
and itemBuilder
?
- ListView.custom
- ListView.builder
- ListView
- ListView.separated
Solution
Break Down the Problem
- Identify the widgets available in Flutter that include the properties
itemCount
anditemBuilder
. - Determine the specific characteristics of each widget to find the correct one.
Relevant Concepts
- ListView Widget: A scrolling widget that displays a list of items.
- itemCount: The total number of items in the list.
- itemBuilder: A function that defines the layout and content of each item in the list.
Analysis and Detail
- ListView: This is the base class but isn't specifically tailored to the
itemCount
anditemBuilder
properties in a customizable way. - ListView.builder: This constructor is purpose-built for creating lists lazily. It takes
itemCount
to specify the number of items anditemBuilder
to define how each item is displayed. - ListView.custom: This allows for more complex layouts but does not explicitly use
itemCount
anditemBuilder
in the same standard way asListView.builder
. - ListView.separated: This is used for lists that require a separator and uses
itemCount
for the total items but has a different signature and requires a different setup for separators.
Verify and Summarize
After analyzing the characteristics of the available widgets, ListView.builder
is confirmed to be the widget that specifically employs both itemCount
and itemBuilder
properties for efficient list item management.
Final Answer
The correct answer is ListView.builder.
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