Is it possible to disable selection in a specific UIPickerView element?

Question

I can find a message that will teach you how to use the delegate method to check the correctness of the line and then scroll it to the right, if not.

But that I do not want. Is it possible to disable a specific row after pickerView initialization? Like the "gray" line and can not stop the indicator on it.

Thanks, experts.

Answer 1

There are two parts to this.

• Use -[<UIPickerViewDelegate> pickerView:viewForRow:forComponent:reusingView:] to return a custom view for each row, for example, UILabel . For the line that you want to display as disabled, you need to adjust the view to reflect this inability.
• In -[<UIPickerViewDelegate> pickerView:didSelectRow:inComponent:] you will need to determine when disabled is selected, and then use -[UIPickerView selectRow:inComponent:animated:] to "roll back" to the "valid" line.

Answer 2

You can also just leave a gap in the implementation, for example:

 - (void)pickerView:(UIPickerView *)thePickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component { if(row==0){ //Code } if(row==1){ //BLANK } if(row==2){ //Code }