So latest update came out for iOS today and although I've run into this before I've sort of managed but now that I'm doing a lot of testing it is driving me nuts.
Is there a way to still deploy to devices running 4.1? I can't set the project settings to any other base SDK other than 4.2 and I can't deploy to devices running 4.2 if I don't upgrade.
Yes. In the Build Settings, there's a value called "iOS Deployment Target". You can set this to an older version of iOS. Note that this does not prevent you from using new features of iOS 4.2, so you have to be careful, as if you do so it will throw a runtime error on the older OS.
There's actually a couple of places, and the settings can be different for your Debug, Release and Deployment configs.
So you can go to:
Project info
- Deployment - iOS deployment target. ('Delete' if it's bold and it will go to the default of the base SDK)
These are overridden by the target settings, so check them too.
Target (double click on the target icon)
- Deployment - iOS deployment target
This way you can do your debugging on 4.2 or 4.1 without changing your release build config until you have any bugs resolved!
Related
Does anyone know how to compile an iPhone app targeting iOS 4.0 using Xcode 4?
It seems that it is only possible to select iOS 4.2 as target.
Thanks in advance
Peter
There's a "Deployment Target" setting and a "Base SDK" setting. You can set the deployment target by clicking on the project name at the top of the tree, then bring up the "Summary" page. Deployment Target is the 4th item, and can be set to 4.0.
"Base SDK" is on the "Build Settings" page and is usually the latest SDK you have installed, but can be set to older SDKs if you go to the trouble to keep them around. Normally you shouldn't need to though, because apps built with newer SDKs should run on older iOS versions as long as you restrict your coding to the older API.
So an app built with the 4.2 SDK should run fine on iOS 4.0 if you set the deployment target to 4.0 or earlier and don't use any methods introduced after 4.0.
See also:
How to target previous version of iOS in XCode4?
What's the real difference between Base SDK and Deployment Target or Deployment OS Version?
How to target 4.2 version with XCode 4
iOS deployment target set to iOS 4.2. Will the app run on devices running earlier versions of iOS?
so - for an iPhone project in Xcode (version 3.2.4) the project settings offer settings for "Base SDK" as well as "iOS Deployment Target" - the later of which determines what's the lowest iOS version to be supported.
however - this "iOS Deployment Target" option is shown to me only in the "Release" configuration. When I switch to "Debug" this option disappears and minimum iOS version required seems to be automatically set to the same as Base SDK.
The problem is that my iPhone runs on iOS 3.1.2 (and I want it to stay on this version!) - but the recent Xcode versions don't have Base SDK options for these older versions (lowest available Base SDK is 3.2) - so I need the "iOS Deployment Target" option to make it compatible with my phone.
how can I make this option available in Debug Configuration?
You need to install an older SDK to run anything prior to 3.2, but don't uninstall your latest. Just put the older version in a directory other than /Developer, I use /Xcode personally. Code normally in the new version, then open the older SDK to test your app on your phone.
Most users are 4.0 or above though, so keep that in mind when trying to make your app backwards compatible (stats from major apps on Quora).
i was add a new target in my existing project.
Everything work fine, but... this warning is become.
Mac OS X Deployment Target '10.6' is newer than SDK 'iOS 4.2' in target snow iphone
Anybody knows how i can disable it?
XCode4 is different and I had trouble finding this option. Here is how to do it - to access the Base SDK for the project, select the project (blue xcode icon) in the navigator top-left; select project properties (not targets) in the next pane; then select "Build Settings".
I tried to post a screenshot but apparently I need to earn more "reputation points" first...
I know this is an old question, but I ran across the same issue and want to provide help. The warning means your version of Xcode is using an SDK older than your deployment target. For example, you have Xcode 6.2 but are deploying for iOS 8.3. You would need to update Xcode to version 6.3 to resolve that error. Another option is to simply download the SDK manually from the Apple Developer center.
Right-click on your target and select Get Info. Go to the Build tab and ensure that the Base SDK setting is Latest iOS.
go to target settings and make sure that Base SDK is set to the latest one. Also check the deployment target.
I hit this problem when I accidentally opened my older version of Xcode. If you have 2 versions of Xcode installed on your computer, make sure you are using the one you intend to! The older version won't understand a newer deployment SDK.
The only option I am able to see in my Base SDK is IOS 4.2 but I can see all SDK versions in IOS Deployment Target. I am trying to run a project which was written using IOS 3.2 do able to run the current XCODE settings.
Any clue?
If you don't have anything incompatible between the iOS 3 and iOS 4 APIs, you should be able to compile and run successfully by changing the Base SDK setting on Project - Edit Project settings (Build tab), and Edit Active Target. Those are the two places that make reference to the original SDK you used (3.2), and the two places you should change to reflect your current SDK (4.2).
yes, change base SDK to "latest iOS" or one which is available with your XCode installation; that should work.
deployment target is the OS version on which the app should be able to run, base SDK is the version you compile and test the app with.
I've downloaded the final version (and never installed any beta versions before) of xcode 3.2.3 with sdk 4, and now I can't seem to find a way to compile my app for a 3.1.3 iOS.
Does anybody know how can I do that ?
As it is, you can't. They probably did this on purpose to discourage new apps compiled for 3.1.3 which foils multitasking.
Instead you can compile for iOS 4 but make your deployment target 3.1.3. This doesn't really require any more real work, as long as you don't use any non-3.1.3 methods/classes etc. and the application can install and run on a 3.1.3 device. You can also then make your application multitasking aware so that it works nicely on a device that does run iOS 4 and is capable of multitasking.
Just a note: the Base SDK may be set at the project level, but you will need to go to the build settings for the target itself to set the deployment target (that setting is not available at the project level).
To expand on Jason Coco's answer:
If you go to the Project Info screen and click Build, you can choose what Base SDK to use (4.0) and then scroll down to iPhone OS Deployment Target version and set it to 3.1.3 or whatever.
However, you also have to go to the Targets section under Groups & Files (red bullseye) select your target and get the Info build page, and set your iPhone OS Deployment Target there too.
Once that's done, you should be able to test it with a device that's still running 3.0 or whatever you selected.
if you want to be compatible with iPhone OS 3.x you still compile for SDK 4.0, but open target settings and choose that application can run on 3.x (iPhone OS Deployment Target). If you did not use any iOS 4.0 specific APIs then your app will run smoothly on 3.x and 4.x, here is a screenshot of setting to change:
Screenshot