I have a 2.67 GHz Celeron processor, 1.21 GB of RAM on a x86 Windows XP Professional machine. My understanding is that the Android emulator should start fairly quickly on such a machine, but for me it does not. I have followed all instructions in setting up the IDE, SDKs, JDKs and such and have had some success in staring the emulator quickly but is very particulary. How can I, if possible, fix this problem?
ARC is function of the compiler rather than the device, so technically it has nothing to do with the OS it is being used on. The difference between the two is the actual zeroing of weak references. Read this for even more info about it.
ReplyDeleteRunning an application that was compiled with ARC on a device with an OS prior to 5.0 will essentially manually zero out references rather than actually zero them out. The automatic zeroing is a core feature of ARC and is why you no longer need to call dealloc or release objects.
Don't know where you saw the bit about 4.3 (do you have a link?) - but in the "Transitioning to ARC Release Notes" Apple says iOS 4.
ReplyDeleteARC is a compiler level feature. So it should work if you are able to compile your code with the latest LLVM 3 compiler. Some very old code bases (mostly old C language third party libraries) that require GCC compiler will not work (such code bases are very very rare)
ReplyDeleteZero-ing weak references, a run time feature that ARC takes advantage of, is not available on OSes before iOS 5/Lion. But ARC without weak references will still work.