Robert Balousek » SDK http://robert.balousek.net Tue, 19 Jul 2011 08:19:55 +0000 http://wordpress.org/?v=2.8.4 en hourly 1 iPhone SDK: No Background Processes http://robert.balousek.net/2008/03/07/iphone-sdk-no-background-processes/ http://robert.balousek.net/2008/03/07/iphone-sdk-no-background-processes/#comments Fri, 07 Mar 2008 23:16:44 +0000 Robert http://robert.balousek.net/2008/03/07/iphone-sdk-no-background-processes/ The iPhone SDK presentation sounded great, but they didn’t answer every question. They also didn’t mention some important details. Most importantly:

Only one iPhone application can run at a time, and third-party applications never run in the background. This means that when users switch to another application, answer the phone, or check their email, the application they were using quits.

Apple iPhone SDKThis is one of the caveats explained in the 100 page iPhone Human Interface Guidelines PDF on the iPhone SDK website.

So what does this mean to the average non-programmer/layperson? Simply put:

If you are running an application such as AOL Instant Messenger on your iPhone, everytime you receive a call or browse away from the application you would be signed out, you would lose any unread messages, and your conversations would end.

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