5 Mind-Blowing Flutter Tricks to Boost Performance and Code Quality

Flutter is a compelling framework, but some hidden tricks can significantly improve your app’s performance and your productivity as a developer. Here are five advanced Flutter techniques that will make you say “Wow!”

1. Use const Widgets to Reduce Rebuilds

Flutter rebuilds widgets frequently, and unnecessary rebuilds can slow down your app. Using const where possible prevents widgets from being recreated, improving performance.

Example:

class MyScreen extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Column(
        children: const [
          Text("This widget will not rebuild!"),
          SizedBox(height: 20),
        ],
      ),
    );
  }
}

Why it works:

By marking widgets as const, Flutter reuses them instead of rebuilding them, saving processing time and improving UI responsiveness.

2. Optimize Lists with ListView.builder

Using ListView with a large dataset can be slow. ListView.builder optimizes memory usage by building only visible items.

Example: