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iOS 10 Programming for Beginners
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Currently, if you hit Select a location in your simulator, a modal pops up. However, you cannot dismiss the modal without restarting the entire app. Therefore, we need a Cancel button and a Done button to dismiss the view. Let's work on this first:
Open Explore.storyboard and select the segue that is connected to your Select a Location. It should now be highlighted.
Then, go to your View Controller (not the Navigation Controller) of your modal:

As you have done in previous chapters, type in bar button into the filter area of the Objects library in the Utilities panel.
Drag and drop a Bar Button Item into the right area of the Navigation Bar of your View Controller Scene:

Drag another Bar Button Item into the left area of the Navigation Bar:

You should now have two Bar Button Items that both say Item:

Next, we need to update both of the Bar Button Items to say Cancel and Done:
Select the left Bar Button Item, and in the Utilities panel, select the...