March 2014
Intermediate to advanced
672 pages
40h 11m
English
Content preview from The Core iOS Developer’s Cookbook, Fifth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Data Source and Delegate Methods
Implement three key data source methods for your UIPickerView to make it function properly at a minimum level. These methods are as follows:
numberOfComponentsInPickerView:—Return the number of columns, as an integer.
pickerView:numberOfRowsInComponent:—Return the maximum number of rows per wheel, as an integer. The number of rows does not need to be identical. You can have one wheel with many rows and another with very few.
pickerView:titleForRow:forComponent or pickerView:viewForRow:forComponent: reusingView: ...
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