searchable_dropdown Ui不更新，并且在按钮的onPressed()内调用setState()ENFlutter 允许您使用FloatingActionButton小部件添加浮动操作按钮。但是，它不允许您拖动按钮。如果你想让它可拖动怎么办。本教程有一个示例，说明您需要做什么才能创建浮动操作按钮，只要它位于父小部件内，就可以将其拖动到屏幕周围的任何位置。
I open Xcode, click on Pods, and then there are 8 pods for which the "IOS deployment target" is below 8.0 (which are mentioned in the error logs), then I click in the dropdown box and set each one to 8.0. Then I also set google maps flutter Pod from 8.0 to 10.0 (which is als...