buildAndroidWebView method

StreamBuilder<double> buildAndroidWebView()

监听Stream，每次值改变的时候，更新Text中的内容

Implementation

StreamBuilder<double> buildAndroidWebView() {
  return StreamBuilder<double>(
    //绑定stream
    stream: _streamController.stream,
    //默认的数据
    initialData: 0.0,
    //构建绑定数据的UI
    builder: (BuildContext context, AsyncSnapshot<double> snapshot) {
      return buildStreamBuilder(snapshot.data!);
    },
  );
}