I want to create a similar widget, but I don't know how to do it.
It seems you are looking for a slider , one of Flutters standard controls.
You can change it's appearance to match your example more closely as covered by the linked documentation.
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.