Iphone UIPickerView: Change selector height

is it possible to change 开发者_JS百科the selector height on a picker view?

Thanks

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Implement this in your picker delegate

pickerView:rowHeightForComponent:

From UIPickerViewDelegate Reference:

Called by the picker view when it needs the row height to use for drawing row content.

- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component

• Parameters

  pickerView - The picker view requesting this information.

  component - A zero-indexed number identifying a component of pickerView. Components are numbered left-to-right.

  Return Value - A float value indicating the height of the row in points.

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no it is not possible to change the height of SelectionIndicator. the only way to achieve is, to add a custom view on the controller's view(or where-ever you are adding your picker) and animate it with PickerView(because it is not possible to add UIView on top of UIPickerView)