我如何使用多个拣货员？

My app collects various types of information and sends it off to our server. Some of the questions are of fixed type so I need to use Pickers. When I've used pickers before they are initialised when the app starts with the array of selections. I had thought I would use different pickers through various subViews. Would it be better to use just one Picker and then reset the array used dynamically. If so how do I do this?My app collects various types of information an