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If I develop an app for iOS 9.1, my app will work in iOS 8?

I have this setup in Xcode (see image) Xcode setup

Bryam Rodriguez
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    Please read the [SDK Compatibility Guide](https://developer.apple.com/library/ios/documentation/DeveloperTools/Conceptual/cross_development/Introduction/Introduction.html#//apple_ref/doc/uid/10000163i). – rmaddy Nov 26 '15 at 17:45

3 Answers3

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Yes, just set the Deployment Target to iOS 8.

EricS
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  • Oh, I see! Thank You. So, If I set the Deployment Target to iOS 8, the app will work in iOS 8, 9 & 9.1, am I right? – Bryam Rodriguez Nov 26 '15 at 17:44
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    This is only the first step. You also need to take steps to ensure you don't use any iOS 9 APIs while running on an iOS 8 device. – rmaddy Nov 26 '15 at 17:44
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    Yes, you must not use any iOS 9 specific classes or calls unless you ensure that they exist at runtime. It should be pretty obvious if you test your app in iOS 8. If using Swift, see http://stackoverflow.com/questions/32730271/how-to-support-ios-9-features-while-keeping-ios-8-support – EricS Nov 26 '15 at 18:13
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You need to set "Deployment target" to iOS 8.0 in order to support iOS 8 onwards. What you have shown in the screenshot is "Base SDK" which is a different thing.

Rashmi Ranjan mallick
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Que : If I develop an app for iOS 9.1, my app will work in iOS 8?

Ans : If you set 1Deployment Target1 8.0 it will work, if you set 1Deployment Target1 9.1 it will not.

You have set Base SDK in your application as your attached image says, base SDK is your current iOS version library which is used to develop your application. It should be latest always.

While Deployment Target decides on which iOS versions your application works. Following image depicts how to change Deployment Target of your application. Set Deployment Target in your project

Dipen Panchasara
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