在更改TextEditingController文本颤动时防止滚动

TextEditingController controller = TextEditingController();

TextField(
  controller: controller,
  ...
)

ScrollController scrollController = ScrollController();

controller.addListener(() {
  final oldScrollPosition = scrollController.position;
  final oldScrollExtent = oldScrollPosition.maxScrollExtent;
  
  // 在此处更新TextField的文本内容

  WidgetsBinding.instance.addPostFrameCallback((_) {
    final newScrollExtent = oldScrollPosition.maxScrollExtent;
    
    if (newScrollExtent > oldScrollExtent) {
      scrollController.jumpTo(newScrollExtent - oldScrollExtent);
    }
  });
});