flutter - Get notification when user pauses dragging

Question

is there a way to get notified when user stops dragging over the screen (using GestureDetector) when the finger is still on the screen? After lifting the finger I do get DragEndDetails event. What I need is sort of "user paused scrolling". Current behaviour is: while moving the finger I do get DragUpdateDetails but when I stop dragging (finger on the screen, drag velocity is 0) neither DragUpdateDetails nor DragEndDetails are fired.

Cheers.

标签： flutter

Answer 1

当您收到拖动更新事件时，您可以设置一个计时器（例如 1 秒）。

如果在此期间没有发生拖动更新（或仅发生最小拖动），则触发您的回调。否则，如果有明显的移动，重新启动计时器...

当拖动被取消或手指被移除或小部件被释放时，取消定时器。