颤动-如何调整VideoProgressIndicator()的对齐方式

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

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Video Progress Indicator Demo',
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(),
    );
  }
}

class MyHomePage extends StatefulWidget {
  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  VideoPlayerController _controller;

  @override
  void initState() {
    super.initState();
    _controller = VideoPlayerController.network(
        'https://example.com/video.mp4')
      ..initialize().then((_) {
        setState(() {});
      });
  }

  @override
  void dispose() {
    super.dispose();
    _controller.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Video Progress Indicator Demo'),
      ),
      body: Center(
        child: _controller.value.isInitialized
            ? AspectRatio(
                aspectRatio: _controller.value.aspectRatio,
                child: Stack(
                  alignment: Alignment.center,
                  children: [
                    VideoPlayer(_controller),
                    VideoProgressIndicator(
                      _controller,
                      allowScrubbing: true,
                      padding: EdgeInsets.all(16.0),
                      alignment: Alignment.center, // 调整对齐方式为居中对齐
                    ),
                  ],
                ),
              )
            : CircularProgressIndicator(),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () {
          setState(() {
            _controller.value.isPlaying
                ? _controller.pause()
                : _controller.play();
          });
        },
        child: Icon(
          _controller.value.isPlaying ? Icons.pause : Icons.play_arrow,
        ),
      ),
    );
  }
}