Choose values with PickerView

Choose values with PickerView

The picker view is a slot-machine view to show one or more sets of values. Users select values by rotating the wheels so that the desired row of values aligns with a selection indicator. The user interface provided by a picker view consists of components and rows. A component is a wheel, which has a series of rows at indexed locations on the wheel. A UIPickerView must conform to the following delegates: UIPickerViewDataSource and UIPickerViewDelegate.

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