Question 1

PageViewIndicator vs Flutter's built-in PageIndicator?

Accepted Answer

PageViewIndicator offers more customization with custom widgets and animations, while Flutter's built-in options like TabBar or DotsIndicator in some packages are more limited but easier for standard use cases. Choose based on design flexibility needs.

Question 2

How to sync PageViewIndicator with PageView in Flutter?

Accepted Answer

Use the pageIndexNotifier parameter to connect the indicator with the PageView's current page index. Update the notifier in the PageView's onPageChanged callback to ensure real-time synchronization.

Question 3

Can I use PageViewIndicator for vertical page views?

Accepted Answer

Yes, since PageView supports vertical scrolling, PageViewIndicator should work, but the indicator layout defaults to horizontal; you may need to adjust padding or orientation in your custom builders for vertical alignment.

Question 4

How to add custom animations to page indicators?

Accepted Answer

Leverage the normalBuilder and highlightedBuilder parameters to include Flutter animation widgets like ScaleTransition or FadeTransition, as demonstrated in the README with CurvedAnimation examples.

Question 5

PageViewIndicator not updating when pages change?

Accepted Answer

This usually stems from improper setup of the pageIndexNotifier. Ensure it's correctly linked to the PageView controller and that state management (e.g., using ValueNotifier) is handled to trigger rebuilds.

Question 6

What are the performance implications of PageViewIndicator?

Accepted Answer

It adds minimal overhead if animations are simple, but complex builders with heavy widgets can impact performance. Optimize by using lightweight widgets and avoiding unnecessary rebuilds in the builders.

PageView Indicator

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