Async | 
The AsyncPicker type exposes the following members.
| Name | Description | |
|---|---|---|
| PickedDone | DoPick执行所有捕捉完成后会调用此回调函数 PickedDone(inputList) | |
| PickedOneInput | DoPick执行每个捕捉后会调用此回调函数 PickedOneInput(input, inputIndex) | |
| PickingInterrupted | DoPick执行过程中被异常中断 UserInterrupted(inputList, userInterrupted) |