Learning iCloud Data Management: A Hands-On Guide to Structuring Data for iOS and OS X

Converting Entities to Objects

As the template is written, you are working with an NSManagedObject for the Observation entity. At runtime, all entities become objects of that class or subclasses of it. The template displays the data from the instances that you create with + in the master view controller by looking up their attributes with KVC. Listing 10.1 shows the relevant code.

Listing 10.1 configureView in DetailViewController.m

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- (void)configureView{    // Update the user interface for the detail item.  if (self.detailItem) {    self.detailDescriptionLabel.text = [[self.detailItem      valueForKey:@"timeStamp"] description];  }}

When the same data is displayed in the table view in the master view controller, ...