ThreadedCoreData |
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DESCRIPTION: |
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This sample shows how to use Core Data in a multi-threaded environment. |
Based on the SeismicXML sample, it downloads and parses an RSS feed from the United States Geological Survey (USGS) that provides data on recent earthquakes around the world. |
What makes this sample different is that it persistently stores earthquakes using Core Data. |
Each time you launch the app, it downloads new earthquake data, parses it in an NSOperation which checks for duplicates and stores newly founded earthquakes as managed objects. |
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This sample follows the first recommended pattern mentioned in the Core Data Programming Guide: Multi-Threading with Core Data; General Guidelines section - "Create a separate managed object context for each thread and share a single persistent store coordinator." |
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For those new to Core Data, it can be helpful to compare SeismicXML sample with this sample and notice the necessary ingredients to introduce Core Data in your application. |
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BUILD REQUIREMENTS |
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iOS SDK 7.0 or later |
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RUNTIME REQUIREMENTS |
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iOS 6.0 or later |
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PACKAGING LIST |
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APLAppDelegate |
Delegate for the application, initiates the download of the XML data and parses the Earthquake objects at launch time. |
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Earthquake |
The model class (NSManagedObject) that stores the information about an earthquake. |
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APLViewController |
A UITableViewController subclass that manages the table view. |
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APLParseOperation |
The NSOperation class used to perform the XML parsing of earthquake data, creating managed objects based on each earthquake and stores them on the main thread. |
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APLEarthquakeTableViewCell |
Custom UITableViewCell for displaying each earthquake's data. |
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Copyright (C) 2011-2014 Apple Inc. All rights reserved. |
