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).
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?
I can't for the life of me find out how to run applicaitons on a device (specifically, and iPhone 4) using XCode 4.
The documentation says to "Set the run destination to iOS device in the scheme editor and build and run your application."
The dropdown menu in the schema editor only has simulator options.
Could someone present a step-by-step method for running applications on devices using Xcode 4?
Using:
Xcode 4.0.2 (iOS 4.3)
iPhone 4.3.3
UPDATE
I ended up doing a series of restarts (Macbook Pro, iPhone 4, Xcode), did a few cleans and builds of the project, and set the "Base SDK" build attribute for the TARGET to "Latest iOS (iOS 4.3).
After that, the device appeared in the destination drop-down in the scheme editing menu.
(Thank you for your time septi!)
Be sure to Verify the BASE SDK used in your project. From the docs:
"
Note: If you are building to your development device, the Base SDK version number defined on your Xcode project must be greater than or equal to the software version number on your development device; otherwise Xcode cannot initiate a debugging session with the device. In that case, you will need to download and install the latest iOS SDK version that is greater than or equal to your device software version.
"
I had a similar problem. My phone has iOS 4.2.1
I downloaded a sample app and my phone did not show up as an option, only the simulators were listed.
So this is just a configuration issue:
To fix this you need to select the project, and:
(as noted above) Select Build Settings/Base SDK = (in my case) Latest iOS (iOS 4.3)
Select Summary: Devices: iPhone
Select Deployment Target: (in my case) 4.2
Now I get the following in the dropdown list of targets:
Myiphone (4.2.1, overriding Base SDK to 4.3)
Also watch out for the UIRequiredDeviceCapabilities property in the plist file. This can prevent a device from showing up sometimes.
I encountered this today in XCode 5 and tried the steps specified. Eventually, I found another solution that may be of use to future readers (Xcode 4 or otherwise).
Go to your project settings and select your target.
Select the "General" tab and scroll to Deployment Info.
Under "Deployment Target", make sure that your device's OS, or something lower, is specified.
---> Your device should now show up as available for debugging in the listing.
Came across this by checking the same device in another project. In that project, the device was listed just fine. When looking at the project settings between the two, the above difference was what stuck out and resolved the issue.
The "Deployment Target" in the project general settings needs to be <= your device, as Danny said above.
Be aware that when you create a new project in a new version of XCode, the default deployment target will be the latest OS release. If your iPhone is on a lower release, this means you either need to upgrade your iPhone, or install an older SDK into your XCode.
You can install an older SDK by copying it into the XCode package at location:
/Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/SDKs
I have little knowledge about how to make application to compatible to a device.
I have iPhone SDK 4.0 and want my app to run on iOS 2.0 or later.
I have read that set only the iPhone OS Deployment Target to 2.0 and use only those API methods which are common after 2.0.
Is it enough?
or do I have to use another (lower) SDK?
or do I have to do something more...?
You should always be developing with the latest SDK. You can set this in your project's properties under "Base SDK" in the "Architectures" section of your project's settings (right click on the project in the organizer, and go to "Get Info").
However, to make sure that your app runs on older devices, you would do this by setting the "iOS Deployment Target" to iOS 3.0 under the "Deployment" section of the project's settings.
For the record, I said version 3.0 above because that's the lowest possible supported version that I see in my Xcode. I don't think it's possible to target 2.0 devices anymore.
The newest Sdk. Apple may not accept the Sdk create by old Sdk.
You can target your min required version os for your App even you are using latest version Sdk.
Each time a new SDK came out, there has been the problem with the "Base SDK" which is really a "max SDK" and backward compatible. My project builds fine after adjusting the "Base SDK" in the Project Info.
But why do I get these messages on the console below the Target Info window when I change the "iOS Deployment Target" to iOS 4.0?
"iOS 4.0 - Code will not load on systems earlier than 4.0. [4.0]" and
"iOS 4.1 - Code will not load on systems earlier than 4.1. [4.1]"
The code did not change since the last successful install on iOS 4.0 under iOS 4.0 SDK.
The project builds without error, but the installation on the device (iOS 4.0) fails with
The Info.plist for application [path/to/app.app] specifies
a minimum OS version of 4.1 which is too high to be installed
on [device].
But there is no mention of a minimum OS version in [project]-Info.plist.
Any ideas?
Did you change the iOS Deployment Target in both your Project and Target Build Settings? If you only change the project setting, an old target setting will override it.
I have installed the new 3.0 SDK, but when I start up Xcode, I don't see an option to build for "Device - iPhone OS 3.0" or "Simulator - iPhone OS 3.0"
The Xcode About box says I am running: 3.1.2
Is there something else I have to do?
I think you need to upgrade to Xcode 3.1.3. I have the latest version and that's what my About box reads.
If you are sure you downloaded the latest version, perhaps you installed in to a different location?
If you are using an existing project you may have to tell your project to build to the 3.0 targets. I didn't have to do this for any of my projects but ...
Under the Deployment section of your project properties you should see:
iPhone OS Deployment Target - (change this to use iPhone OS 3.0)
You can also check that the Architectures section has the Base SDK set to 3.0.
This happens quite often when downloading Apple's sample code projects which are targeted for iOS 3.x but you've got iOS 4.x.
To show Simulator option go to Project Info window -> General tab -> Base SDK for All Configurations - choose Latest iOS.
If it doesn't appear straight away, close and reopen Xcode.
This is what worked for me:
I clicked on the box (where I expected iPhone Simulator to be shown), right clicked manage scheme. After that deleted all schemes, and in similar way, created a new scheme. It automatically produced all simulators including the ones for devices.