如何关闭CircularProgressIndicator颤动

AnimationController _controller;

@override
void initState() {
  super.initState();
  _controller = AnimationController(
    vsync: this,
    duration: Duration(seconds: 1),
  );
  _controller.repeat();
}

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

void stopAnimation() {
  _controller.stop();
}

bool _showProgress = true;

@override
Widget build(BuildContext context) {
  return Column(
    children: [
      Visibility(
        visible: _showProgress,
        child: CircularProgressIndicator(),
      ),
      // 其他组件
    ],
  );
}

void hideProgress() {
  setState(() {
    _showProgress = false;
  });
}