how to implement an Drop Down List for iphone

I searched about UIPickerView and NSComboB开发者_StackOverflow中文版ox , I really don't understand the difference between these two !!! can anyone tell me what is the best way to show an Drop down list in xcode .

I saw the picker view but I think it is too much coding for a dropdown list !!!!

thank you

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For Drop Down List you can implement picker View.It takes very less coding effort. If you want to implement it like a drop down then you might take think to create a view which will have a label and a button (like in drop down) and on that button click show a table view. This will take a good coding effort.