CODEWITHSUNDEEP
objective-ciosios5ios4automatic-ref-counting
Saroj Ojha
Saroj Ojha

Reputation: 79

ARC enabled App will run in lower version of ios

I have developed an application using xcode 4.3.2 with ARC enabled ,my app users having ios3.2, ios4.0,ios5.0 devices how can I give support to lower version ios device uses .Should I need to do anything in code side . or Is there any way set ARC dynamically like.

Any have any idea regarding this plz share with me. Thanks

Upvotes: 1

Views: 701

Answers (3)

Evan Mulawski
Evan Mulawski

Reputation: 55334

ARC is not device- or OS-dependent (see note below). It is a LLVM compiler feature (which can be disabled using the -fno-objc-arc compiler flag). The compiler manages the memory instead of the programmer. The final executables will not be very different from one another and will work on the minimum OS specified for your project (if you are not using ARC-specific keywords, etc.).

Note: According to Apple's Transitioning to ARC Release Notes from Apple, ARC-compiled executables will only run on iOS 4 and above. In addition, weak references are only supported on iOS 5.

Upvotes: 2

Hailei
Hailei

Reputation: 42163

I think at least it is not guaranteed to work correctly on iOS 3.x. See Transitioning to ARC Release Notes from Apple:

ARC is supported in Xcode 4.2 for Mac OS X v10.6 and v10.7 (64-bit applications) and for iOS 4 and iOS 5. Weak references are not supported in Mac OS X v10.6 and iOS 4.

Upvotes: 0

Haris Hussain
Haris Hussain

Reputation: 2581

Just set the target deployment to the lowest iOS version your users might be on.. AutoMatic Reference Counts only while compiling the app in Xcode. The memory of app enabled ARC is managed by compiler (Xcode). So you need not to worry about the target iOS version of the device. Just set the Target Deployment to 3.2 or 4 etc.

Upvotes: 0

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