huixiang_app/lib/community/community_view/class_details_video.dart

import 'package:chewie/chewie.dart';
import 'package:flutter/material.dart';
import 'package:chewie/src/chewie_progress_colors.dart' as chewie;
import 'package:flutter/services.dart';
import 'package:huixiang/view_widget/custom_image.dart';
import 'package:video_player/video_player.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

class ClassDetailsVideo extends StatefulWidget {
  final Function(bool isShowImg)? changeShowImg;
  final Function(double height)? heightFun;
  final bool? isShowImg;
  final Function? exitFull;
  final String? coverImg;
  final String? videoUrl;

  ClassDetailsVideo(
      {Key? key,
      this.changeShowImg,
      this.isShowImg,
      this.exitFull,
      this.heightFun,
      this.coverImg,
      this.videoUrl})
      : super(key: key);

  @override
  State<StatefulWidget> createState() {
    return ClassDetailsVideoState();
  }
}

class ClassDetailsVideoState extends State<ClassDetailsVideo> {
  VideoPlayerController? videoPlayerController;
  ChewieController? chewieAudioController;
  Chewie? chewies;
  GlobalKey globalKey = GlobalKey();
  double height = 0;

  @override
  void initState() {
    super.initState();
    SystemChrome.setPreferredOrientations([
      DeviceOrientation.portraitUp,
    ]);
    initVideo(widget.videoUrl);
  }

  @override
  void didChangeDependencies() {
    WidgetsBinding.instance.addPostFrameCallback(_getContainerHeight);
    super.didChangeDependencies();
  }

  _getContainerHeight(_) {
    if (globalKey.currentContext != null)
      height = globalKey.currentContext!.size?.height ?? 0;
    widget.heightFun?.call(height);
    print("height: $height");
  }

  initVideo(videoUrl) async {
    videoPlayerController?.pause();
    videoPlayerController?.dispose();
    videoPlayerController = VideoPlayerController.networkUrl(
      Uri.parse(videoUrl  ?? ""),
    )..initialize().then((value) {
        chewieAudioController = ChewieController(
          videoPlayerController: videoPlayerController!,
          aspectRatio: videoPlayerController?.value.aspectRatio,
          // aspectRatio: 1.44,
          //宽高比
          autoPlay: false,
          //自动播放
          looping: false,
          //循环播放
          allowFullScreen: true,
          // 允许全屏
          allowedScreenSleep: false,
          //允许屏幕休眠
          materialProgressColors: chewie.ChewieProgressColors(
            playedColor: Colors.white,
            handleColor: Colors.white,
            backgroundColor: Colors.grey,
            bufferedColor: Colors.transparent,
          ),
          // 拖动条样式颜色
          autoInitialize: true,
        );
        chewieAudioController?.addListener(_fullScreenListener);
        if (mounted) setState(() {});
      });
  }

  @override
  Widget build(BuildContext context) {
    return Container(
        padding: EdgeInsets.only(
          top:
              (Theme.of(context).platform == TargetPlatform.android) ? 0 : 70.h,
        ),
        color: Colors.black,
        key: globalKey,
        child: (videoPlayerController?.value.isInitialized ?? false)
            ? videoWidget(
                MediaQuery.of(context).size.height,
                (MediaQuery.of(context).size.height / 1.44) - 43,
                widget.coverImg,
              )
            : Container(),
    );
  }

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

    chewieAudioController?.pause();
    chewieAudioController?.dispose();

    videoPlayerController?.pause();
    videoPlayerController?.dispose();
  }

  Widget videoWidget(double width, double height, src) {
    print("src :  $src");
    return MediaQuery(
        data: MediaQuery.of(context).copyWith(
          textScaler: TextScaler.linear(0.9),
        ),
        child: Stack(
            children: [
          (chewieAudioController != null
              ? Container(
                  color: Colors.black,
                  width: width,
                  height: MediaQuery.of(context).size.width / 1.5,
                  // margin: EdgeInsets.only(top: MediaQuery.of(context).padding.top),
                  child: chewies = Chewie(
                    controller: chewieAudioController!,
                  ),
                )
              : Container(
                  width: width,
                  height: MediaQuery.of(context).size.width / 1.5,
                  // margin: EdgeInsets.only(top: MediaQuery.of(context).padding.top),
                )),
          if (widget.isShowImg ?? false)
            GestureDetector(
              onTap: () {
                setState(() {
                  widget.changeShowImg?.call(false);
                  chewieAudioController?.play();
                });
              },
              child: Container(
                width: width,
                height: MediaQuery.of(context).size.width / 1.5,
                // margin: EdgeInsets.only(top: MediaQuery.of(context).padding.top),
                color: Colors.black,
                child: Stack(
                  children: [
                    Positioned(
                      left: 0.0,
                      top: 0.0,
                      right: 0.0,
                      bottom: 0.0,
                      child: MImage(
                        src,
                        fit: BoxFit.cover,
                        errorSrc: "assets/image/default_2_1.webp",
                        fadeSrc: "assets/image/default_2_1.webp",
                      ),
                    ),
                    Center(
                      child: Icon(
                        Icons.play_circle_outline,
                        color: Colors.white,
                        size: 60,
                      ),
                    ),
                  ],
                ),
              ),
            ),
        ],
        ),
    );
  }

  Future<void> _fullScreenListener() async {
    if (!(chewieAudioController?.isFullScreen ?? false)) {
      Future.delayed(Duration(seconds: 1), () {
        widget.exitFull?.call();
      });
    }
  }
}