Using UIPickerView in Swift forms: Tutorial with examples

Using Apple's UIPickerView can enhance the usability of iOS apps by providing users with a spinning wheel format to select data, such as states, countries, or birth dates, rather than entering information manually. UIPickerView, a subclass of UIView, is commonly used in apps like a slot machine or the iOS Clock app, which employs the UIDatePicker subclass to set alarm times. The UIPickerViewDataSource protocol defines the number of components and rows, while the UIPickerViewDelegate protocol manages row content and user selection. The UIDatePicker subclass offers a specialized interface for selecting dates and times, employing a target-action pattern rather than delegation. A practical example in a Swift form demonstrates multiple picker views, including one for income type, source, and date received, showcasing UIPickerView's ability to handle single and double components. By implementing UIPickerView in apps, developers can create more intuitive and user-friendly interfaces, especially for tasks requiring selections from multiple options.