UIPickerViewDelegate methods

Q.85 UIPickerViewDelegate methods.Ans:-

• All are the @optional method.
• Following method are some selected important method for more read on Apple offical document.
• 1) -(NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger *)component;
• 2) -(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component;
• 3) -(CGFloat)pickerView : (UIPickerView *)pickerView widthForComponent:(NSInteger)component;
  4) -(CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent(NSInteger)component;