Databases
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PO
 

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  1. PO
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    <p>To respond directly to picker manipulation, use the delegate's <a href="http://developer.apple.com/iphone/library/documentation/uikit/reference/UIPickerViewDelegate_Protocol/Reference/UIPickerViewDelegate.html#//apple_ref/occ/intfm/UIPickerViewDelegate/pickerView:didSelectRow:inComponent:" rel="nofollow noreferrer">pickerView:didSelectRow:inComponent:</a>. </p> <p>To obtain the view corresponding to user selection, use <a href="http://developer.apple.com/iphone/library/documentation/uikit/reference/UIPickerView_Class/Reference/UIPickerView.html#//apple_ref/occ/instm/UIPickerView/viewForRow:forComponent:" rel="nofollow noreferrer">viewForRow:forComponent:</a>. From that view you can obtain information about what it displays (if it's a UILabel, inspect its <code>text</code> property).</p> <p>Also, you can obtain this information directly from the data source, referring to the piece of information you would return in the delegate's <a href="http://developer.apple.com/iphone/library/documentation/uikit/reference/UIPickerViewDelegate_Protocol/Reference/UIPickerViewDelegate.html#//apple_ref/occ/intfm/UIPickerViewDelegate/pickerView:titleForRow:forComponent:" rel="nofollow noreferrer">pickerView:titleForRow:forComponent:</a> or <a href="http://developer.apple.com/iphone/library/documentation/uikit/reference/UIPickerViewDelegate_Protocol/Reference/UIPickerViewDelegate.html#//apple_ref/occ/intfm/UIPickerViewDelegate/pickerView:viewForRow:forComponent:reusingView:" rel="nofollow noreferrer">pickerView:viewForRow:forComponent:reusingView:</a>, for the currently selected row and component.</p>
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    1. PODrawing the UIPicker values from multiple components?
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    1. USluvieere
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    1. COI don't quite understand what you are saying - what the difference between these are.
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      1. USstartuprob
    2. CO@Rob Your last edit was a bit clarifying, without it I thought you needed to get your information when your picker changed selection instead of when you touch the button. Now, I'm still confused what you mean by "to extrapolate the information". Would you mind giving an example of what kind of result you'd like to obtain? Give some mock data that's in the picker, and tell me what you'd like to get after extrapolating...
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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