How can I remove ARC from iPhone project build for iOS 5?

Question

Now I have a Xcode project which is built for iOS 5, but now i have to install it on an iPhone 3GS, which has a older iOS. I came to know that this is because I am using ARC in this project and it is not available in iOS 3.2. How can I remove ARC from my current project?

Answer 1

If you want it disabled for the whole project, you need to go to the target's build settings and set it to No

Answer 2

very simple first go to targets in that go "buldphases"-->compileSource--> here " yourfile.m " --> set value - fno-objc-arc (only particular files )

if u want remove ARC in entire project go to targets in that go "buldsettings" ---> objective-c automaticrefcount :NO

Answer 3

Go Build Settings确保选中“all”选项搜索自动你会发现Objective-c Automatic Reference计数设置NO

Answer 4

In XCode, there is a global compiler flag called -fobjc-arc . If you disable this ( -fno-objc-arc ), ARC will be disabled in your whole project. If only a few files don't support ARC, use the -fno-objc-arc flag on those files only. The last flag "wins", see http://clang.llvm.org/docs/AutomaticReferenceCounting.html#general .

However, make sure that you know what you're doing! If the project was designed around ARC, there may not be any deallocation-code in there, including dealloc methods. Also, your properties might be unsupported ( strong , weak etc.). You'll most likely end up in a complete mess.

Your best bet would be to just upgrade your 3GS.