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UIPickerViewDataSource Protocol Reference Conforms to NSObject Framework /System/Library/Frameworks/UIKit.framework Availability Available in iOS 2.0 and later. Declared in UIPickerView.h Related sample code iPhoneCoreDataRecipes iPhoneMixerEQGraphTest LocateMe QuartzDemo OverviewThe UIPickerViewDataSource protocol must be adopted by an object that mediates between a UIPickerView object and your..

UIPickerViewDelegate Protocol Reference Conforms to NSObject Framework /System/Library/Frameworks/UIKit.framework Availability Available in iOS 2.0 and later. Declared in UIPickerView.h Related sample code iPhoneCoreDataRecipes iPhoneMixerEQGraphTest LocateMe QuartzDemo OverviewThe delegate of a UIPickerView object must adopt this protocol and implement at least some of its methods to provide th..

UIPickerViewDataSource 프로토콜을 따르면 반드시 구현해야 하는 메소드로써 해당 컬림의 줄 개수를 반환합니다. pickerView:numberOfRowsInComponent:Called by the picker view when it needs the number of rows for a specified component. (required) - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component ParameterspickerViewThe picker view requesting the data. componentA zero-indexed number identifying..