Building the UI for the iOS app that will control an actuator

Click on Main.storyboard in the Project Navigator on the left-hand side of the Xcode window. The editor will switch to a design view that displays how the view will look. Click on View Controller under View Controller Scene. Make sure that you see the Utilities pane on the right-hand side and check the values for Identity Inspector. In order to do so, select View | Utilities | Show Identity Inspector or press Command + Option + 3. The value for Class will be ViewController under Custom Class, as shown in the following screenshot:

Building the UI for the iOS app that will control an actuator

The previously introduced ViewController class is the ...

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