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Editorial Team
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Asked: 2026-05-24T11:37:53+00:00

Is there any way I can have an object receive a message when the

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Is there any way I can have an object receive a message when the user changes the selected row in the picker view? My pickerview has two components and it is dismissed when the user taps the screen once. But I need to gray out certain options in the second component depending on which option in the first component is chosen.

One other option is to use a timed function to periodically check which row is selected, but that’s really hacky. Are there any delegate functions I can use?

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1 Answer

  1. Editorial Team

    UIPickerView has a delegate that you can use, called UIPickerViewDelegate. In it, there is a method called:

    - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component

    That lets you know what row they’ve selected and in what component, and should accomplish what you’re asking, if I understood correctly.

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