Regarding implementation of multi component dependent uipickerview

Question

I am having trouble grasping the concept of multi component uipickerviews. I really would like to just OWN this subject. I would like to make a 4 component pickerview with c

Answer 1

It's quite simple. In the pickerView:didSelectRow:inComponent: method, just call [myPicker reloadComponent:] for all components coming after the one where the selection changed. The picker will then automatically ask its datasource (your view controller, presumably) for the number of rows and the rows' values.

Then, in pickerView:numberOfRowsInComponent: and pickerView:titleForRow:forComponent:, return the appropriate values (the count and contents of the corresponding array) depending on the values of the parent components' selected rows.