ios - Multiple UIPickerViews Dependent On Previous Selection With Large Datasource -


i need able select village in thailand, based first off of province, region, district, , selecting village. select province first, , in turn shows regions in province, , on , forth. have spreadsheet @ http://www.316apps.com/fritch/dropdown.xlsx has information, not sure how convert datasource , implement in uipickerviews. advice on this?


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