Flutter视频播放器在iOS端和Android端都能实现全屏播放

news2024/11/15 14:43:18

Flutter开发过程中，对于视频播放的三方组件有很多，在Android端适配都挺好，但是在适配iPhone手机的时候，如果设置了`UIInterfaceOrientationLandscapeLeft`和`UIInterfaceOrientationLandscapeRight`都为false的情况下，无法做到全屏播放，因为FLutter的`SystemChrome.setPreferredOrientations`方法不适配iOS端，无法控制屏幕进行旋转，下面我们看效果

在Android手机上效果

在IPhone手机上效果

我们可以看到，当在iPhone手机上进行全屏播放的时候，屏幕并没有旋转过来，查阅了很多资料，都没能很好的解决，后来只能自己在iOS端用原生写了个播放器，利用FLutter嵌入原生的开发模式来适配全屏播放，

最终效果如下

如果有什么好的方法解决这个在iOS不能旋转屏幕的想法的，欢迎在下方留言。。。。

下面贴出代码

1、FLutter视频播放器采用的是`chewie`

封装的播放器代码如下：

import 'dart:io';
import 'package:chewie/chewie.dart';
import 'package:flutter/material.dart';
// ignore: depend_on_referenced_packages
import 'package:video_player/video_player.dart';

class VideoPlayerWidget extends StatefulWidget {
  final String videoUrl;
  final bool fullScreenByDefault;
  const VideoPlayerWidget({
    super.key,
    required this.videoUrl,
    this.fullScreenByDefault = false,
  });

  @override
  State<VideoPlayerWidget> createState() => _VideoPlayerWidgetState();
}

class _VideoPlayerWidgetState extends State<VideoPlayerWidget> {
  late VideoPlayerController _videoPlayerController;
  ChewieController? _chewieController;
  int? bufferDelay;

  @override
  void initState() {
    super.initState();
    initializePlayer();
  }

  @override
  void dispose() {
    _videoPlayerController.dispose();
    _chewieController?.dispose();
    super.dispose();
  }

  List<String> srcs = [
    "https://assets.mixkit.co/videos/preview/mixkit-spinning-around-the-earth-29351-large.mp4",
    "https://assets.mixkit.co/videos/preview/mixkit-daytime-city-traffic-aerial-view-56-large.mp4",
    "https://assets.mixkit.co/videos/preview/mixkit-a-girl-blowing-a-bubble-gum-at-an-amusement-park-1226-large.mp4"
  ];

  Future<void> initializePlayer() async {
    //判断是本地视频还是网络请求下来的视频
    if (widget.videoUrl.contains('http')) {
      _videoPlayerController =
          VideoPlayerController.networkUrl(Uri.parse(widget.videoUrl));
    } else {
      _videoPlayerController =
          VideoPlayerController.file(File(widget.videoUrl));
    }
    await Future.wait([
      _videoPlayerController.initialize(),
    ]);
    _createChewieController();
    setState(() {});
  }

  void _createChewieController() {
    _chewieController = ChewieController(
      videoPlayerController: _videoPlayerController,
      autoPlay: true,
      hideControlsTimer: const Duration(seconds: 10),
      allowPlaybackSpeedChanging: false,
      fullScreenByDefault: widget.fullScreenByDefault,
    );
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      color: const Color.fromRGBO(28, 34, 47, 1),
      width: MediaQuery.of(context).size.width - 20,
      height: 300,
      child: Center(
        child: _chewieController != null &&
                _chewieController!.videoPlayerController.value.isInitialized
            ? Chewie(
                controller: _chewieController!,
              )
            : const Column(
                mainAxisAlignment: MainAxisAlignment.center,
                children: [
                  CircularProgressIndicator(),
                  SizedBox(height: 20),
                  Text(
                    'Loading',
                    style: TextStyle(
                      color: Colors.white,
                    ),
                  ),
                ],
              ),
      ),
    );
  }
}

如果碰到Video Player "UnimplementedError: init() has not been implemented的错误，关闭App，重新运行（Flutter run）就行了
视频播放链接https://assets.mixkit.co/videos/preview/mixkit-spinning-around-the-earth-29351-large.mp4

2、使用的时候区分了Android端和iOS端

body: Center(
        child: ElevatedButton(
          onPressed: () {
            showDialog(
              context: context,
              builder: (context) {
                return Dialog(
                  insetPadding: const EdgeInsets.only(left: 0),
                  child: Platform.isAndroid
                      ? const VideoPlayerWidget(
                          videoUrl: videoUrl,
                        ) //Android视频播放器
                      : SizedBox(
                          width: MediaQuery.of(context).size.width,
                          height: MediaQuery.of(context).size.width * 9 / 16,
                          child: const UiKitView(
                            viewType:
                                'plugins.flutter.io/custom_platform_view_plugin',
                            creationParams: {
                              'videoUrl': videoUrl,
                            },
                            creationParamsCodec: StandardMessageCodec(),
                          ),
                        ), //iOS视频播放器
                );
              },
            );
          },
          child: const Text('点击播放视频'),
        ),
      ),