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A simple FPS monitor for Flutter. Helps to easily diagnose performance problems in your applications.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:statsfl/statsfl.dart';

void main() {
  //Enable this to measure your repaint regions
  //debugRepaintRainbowEnabled = true;
  runApp(Padding(
    padding: const EdgeInsets.only(top: 40),
    child: StatsFl(
      isEnabled: true,
      align: Alignment.topRight,
      height: 20,
      child: MaterialApp(debugShowCheckedModeBanner: false, home: Scaffold(body: MyApp())),
    ),
  ));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    int boxCount = 10;
    List<Widget> boxes = List.generate(
      boxCount,
      (index) => ShadowBox(),
    ).toList();

    return Stack(
      children: [
        /// Test 2nd level of nesting
        StatsFl(
            isEnabled: true,
            maxFps: 90,
            width: 200,
            height: 30,
            align: Alignment.topLeft,
            child: Center(child: ListView(children: boxes))),

        Center(child: IconButton(onPressed: () {}, icon: Icon(Icons.height))),

        /// Test floating version with no child
        Positioned.fill(child: Align(alignment: Alignment.bottomCenter, child: StatsFl())),
      ],
    );
  }
}

class ShadowBox extends StatelessWidget {
  const ShadowBox({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.only(bottom: 20),
      height: 50,
      decoration: BoxDecoration(color: Colors.white, boxShadow: [
        BoxShadow(spreadRadius: 4, blurRadius: 4, color: Colors.redAccent.withOpacity(.2)),
      ]),
      child: Container(
        width: double.infinity,
        alignment: Alignment.center,
        child: SizedBox.fromSize(size: Size(20, 20), child: CircularProgressIndicator()),
      ),
    );
  }
}
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Publisher

verified publishergskinner.com

A simple FPS monitor for Flutter. Helps to easily diagnose performance problems in your applications.

Repository (GitHub)
View/report issues

Documentation

API reference

License

MIT (license)

Dependencies

flutter

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