flutter-floating-bottom-bar

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I am using InAppWebView, it has no ScrollController, is there any way to display the icon when scrolling?

1

body的子组件是一个InAppWebView，它没有ScrollController 怎么能实现 icon的显示与隐藏？ The subcomponent of body is a InAppWebView. How can icon be displayed and hidden without ScrollController? Thanks.

disonwei