Comments on: iPhone SDK 3 and Deprecated Method Warnings

By: John Muchow

John Muchow — Mon, 07 Sep 2009 05:03:09 +0000

Chris,

iPhone apps are targeted for one base platform. For example, if you create a build for 2.2.1, you cannot include any features of the 3.0 SDK.

John

By: Chris

Chris — Mon, 07 Sep 2009 02:38:47 +0000

So do you release two different versions of your app, one for = 3.0? Or do both of these get put into a “universal binary” for the iPhone?

By: Marco Lazzeri

Marco Lazzeri — Wed, 22 Jul 2009 09:03:37 +0000

Great hint! Thanks

By: Wim Verhoef

Wim Verhoef — Sat, 11 Jul 2009 13:04:10 +0000

Mike,

If you are targeting an SDK prior to 3.0 the preprocessor variable __IPHONE_3_0 is undefined so the else part is used. Now if you are compiling for an SDK equal to or after 3.0 the variable WILL be defined so the then part is used. No need to do a comparison.
To check how this works just have a look at Availablity.h in the SDK.
As you see all previous versions are defined as well:

#define __IPHONE_2_0 20000
#define __IPHONE_2_1 20100
#define __IPHONE_2_2 20200
#define __IPHONE_3_0 30000
#define __IPHONE_NA 99999 /* not available */

If you really want to do a comparison, the comments in Availability.h recommend this:

#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 30000
// code for OS3.0 and later
#else
// code for earlier versions
#endif

By: Mike Weller

Mike Weller — Fri, 03 Jul 2009 14:44:56 +0000

I’ve been using similar code, but my problem is this: what happens when the version goes up to 3_1? Now that code is going to revert to the pre 3.0 version. Is there some way to do a “if version < 3″ test?

By: Maksim Horbul

Maksim Horbul — Tue, 30 Jun 2009 07:17:03 +0000

The most often met deprecation warning is related to the cell.text.

UITableViewCell in SDK 3 offers textLabel and detailTextLabel:

#if __IPHONE_3_0
cell.textLabel.text = @”The Text”;
cell.detailTextLabel.text = @”The Sub-text”;
#else
// cell with the custom content view
cell.text = @”The Text”
cell.customSubTextLabel = @”The Sub-Text”
#endif

Editor’s note: cell.customSubTextLabel does not exist in 2.x. To have functionality similar to the 3.0 cell.detailTextLabel, you would have to add a custom label to a subclass of cell.