Run a task in the background of an iPhone App

Question

I want to be able to load data from my API server in the background of my iPhone app. How do I achieve this?

Answer 1

Assuming it's an http based api, use the asynchronous methods of NSURLConnection. More information can be found here. Otherwise you can use the async methods of NSOutputStream and NSInputStream with a CFSocket.

Answer 2

Lots of options:

• Grand Central Dispatch
• NSThread
• NSOperationQueue
• Asynchronous network calls