Flutter解析網頁內容

 Future _detail() async {
    setState(() {
        getString('https://wx.vzan.com/live/PlayPage?tpid=${res.url}');
    }
    });
  }

  void getString(String url) async {

    print("get: $url");
    Response response;
    try {
      response = await Dio().get<String>(url);
      getVideoUrl(response.toString());
    } on DioError catch (e) {
      print('get錯誤：$e');
    }
    getVideoUrl(response.toString());
  }

  void getVideoUrl(String html) {
    var htmlArr = html.split('\n');
//    print(htmlArr);
    htmlArr.forEach((element) {
      if(element.indexOf('m3u8?time') > -1){
        vzanVideo = element.replaceAll('var url = ', '').replaceAll('"', '').replaceAll(';', '');
        print(vzanVideo);

      }
    });
  }