WheelView：滚轮选择框扩展

App Inventor 2

WheelView, like number picker, but can be any strings.

original code from WheelView: 效果类似android4.0以上原生的DatePicker 18

Thanks @wildcontrol to sponsor this extension

Demo picture:

this demo used 3 extensions

All the blocks

来源：https://wangsk789.github.io/wheelview/