IOS开发入门教程

1.

Use Foundation to:

• Create and manage collections such as arrays and dictionaries.

• Access images and other resources stored in your app.

• Create and manage strings.

• Post and observe notifications.

• Create date and time objects.

• Automatically discover devices on IP networks.

• Manipulate URL streams.

• Perform code asynchronously.

2.

Use UIKit to:

• Construct and manage your user interface.

• Handle touch and motion-based events.

• Present text and web content.

• Optimize your app for multitasking.

• Create custom user-interface elements.

3.

Use Core Data to:

• Save and retrieve objects from storage.

• Support basic undo/redo.

• Validate property values automatically.

• Filter, group, and organize data in memory.

• Manage results in a table view with [NSFetchedResultsController].

• Support document-based applications