PageView.builder Widget with Indication Bar in Flutter
The "PageView.builder" widget in Flutter, when combined with an indication bar, provides a user-friendly way to display a series of child widgets that can be horizontally or vertically scrolled through. The indication bar is used to visually represent the current position within the PageView. Here are the key components and concepts involved:
PageView.builder: This widget allows you to create a scrollable view of child widgets on-demand. It's suitable for scenarios with a dynamic or large number of child widgets. You specify the total number of items, and a builder function is used to create the widgets as needed.
PageController: You can use a PageController to control the PageView's position programmatically and to listen to page change events.
Indication Bar: The indication bar is a set of visual indicators, often represented as dots or other shapes, aligned horizontally or vertically to show the user's current position within the PageView. The color or style of the indicator representing the current page is typically different from the others to provide visual feedback.
onPageChanged: This callback function can be used to listen for page change events in the PageView. It's commonly used to update the indication bar when the user swipes to a different page.
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