UIPickerView选择链接到UITableView

Question

How do I link a UIPicker view on one scene to a UITableViewController ? I have a picker view in one view controller populated with a number of categories, I want to segue to a table view controller when a category is selected/pressed.

Answer 1

First, create the segue in the Storyboard by Ctrl-dragging from the view controller to the new TableViewController (don't link from the picker, link from the view controller in which it appears). Select the segue and give it an appropriate identifier. In your UIPickerView delegate, implement the pickerView:didSelectRow:inComponent: method, and save the selected rows/components to properties. Then invoke performSegueWithIdentifier:sender: to trigger the segue.

Separately, as part of the prepareForSegue method, read the properties you previously saved, and set the relevant properties of the segue destination view controller.

NB you may find, though, that this will trigger if the user hesitates whilst spinning through the picker view options.