The ShowCaseView is a Flutter package designed to help developers highlight various widgets step by step, making the user experience smoother and more informative. In this guide, we will walk you through the installation, implementation, and troubleshooting of the ShowCaseView package effectively.

Installation

To start using the ShowCaseView, follow these steps:

• Step 1: Add the dependency in your pubspec.yaml file:

dependencies:
  showcaseview: latest-version

• Step 2: Import the package in your Dart file:

import 'package:showcaseview/showcaseview.dart';

• Step 3: Wrap your target widget with ShowCaseWidget:

ShowCaseWidget(
  builder: (context) => SomeWidget(),
);

Creating Showcases

Once you have your widget wrapped in ShowCaseWidget, it’s time to create showcases. Each showcase needs a GlobalKey:

GlobalKey _one = GlobalKey();
GlobalKey _two = GlobalKey();
GlobalKey _three = GlobalKey();

// Creating a showcase
Showcase(
  key: _one,
  title: 'Menu',
  description: 'Click here to see menu options',
  child: Icon(Icons.menu, color: Colors.black45),
);

Starting the Showcase

To start the showcase when certain events occur, use the following code:

someEvent() {
  ShowCaseWidget.of(context).startShowCase([_one, _two, _three]);
}

If you want the showcase to start immediately after the UI is built, use:

WidgetsBinding.instance.addPostFrameCallback((_) {
  ShowCaseWidget.of(context).startShowCase([_one, _two, _three]);
});

Understanding the Code

Imagine you are giving a guided tour in a museum. Each room represents a widget, and the tour highlights these rooms one by one, providing descriptions of what each room has to offer. The GlobalKey acts as a tour guide’s pointer, directing attention to specific areas (widgets) in the museum (application). The ShowCaseWidget is your museum passageways, ensuring that visitors (users) move smoothly from one exhibit (widget highlight) to another. Just as a museum guide pauses to discuss each exhibit before moving on, the showcase pauses to allow users to learn about each widget before transitioning to the next!

Troubleshooting

• If the showcases are not appearing: Ensure that the ShowCaseWidget is correctly wrapping your widget, and all GlobalKey references are properly linked.
• If you don’t see the scroll effect: The auto-scrolling feature may not work correctly on scroll views rendering widgets on-demand (like ListView). To resolve this, consider using a SingleChildScrollView or manage scrolling manually with a ScrollController.
• For more insights, updates, or to collaborate on AI development projects, stay connected with fxis.ai.

Conclusion

With ShowCaseView, you can elevate your Flutter application by providing an engaging walkthrough experience for your users, enabling them to understand features effortlessly. At fxis.ai, we believe that such advancements are crucial for the future of AI, as they enable more comprehensive and effective solutions. Our team is continually exploring new methodologies to push the envelope in artificial intelligence, ensuring that our clients benefit from the latest technological innovations.