Keychain group access to share data between my existing applications

Question

I have many iOS applications live on AppStore. Now for next version of apps, I want to keep a piece of data for every application to share in KeyChain. As far as I know I ne

Answer 1

Now you can use UIPasteboard

//First app, install->run->close->delete
UIPasteboard* board = [UIPasteboard pasteboardWithName:@"com.company.wtv" create:YES];
board.persistent=YES;// persistent to make what you write persist after your app closes, or gets deleted.
[board setValue:@"ccccc" forPasteboardType:@"com.company.wtv.sharedValue"];

//Second app, installed after first one is deleted and ran this one... While bundle identifier and bundle seed different (i tried it on adhoc, not really releasing the app, but i htink the same)
NSData* result=nil;
NSString*resultStr=nil;
result =[board valueForPasteboardType:@"com.company.wtv.sharedValue"];
resultStr=[[NSString alloc] initWithData:result encoding:NSUTF8StringEncoding];// I got resultStr containing ccccc

check UIPasteboard documentation for further info. I'll be coming back after using this for my store apps, in case of troubles