众所周知，苹果已经于近期禁止使用设备UDID的应用上架，理由是用户个人隐私和行为习惯可能被恶意追踪。官方文档建议在iOS6以上版本中使用 identifierForVendor取代UDID，而在低版本iOS中使用CFUUID。
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- (NSString *) idForDevice; { NSString *result = @""; UIDevice *thisDevice = [UIDevice currentDevice]; if ([thisDevice respondsToSelector: @selector(identifierForVendor)]) { NSUUID *myID = [[UIDevice currentDevice] identifierForVendor]; result = [myID UUIDString]; } else { NSUserDefaults *defaults = [NSUserDefaults standardUserDefaults]; result = [defaults objectForKey: @"appID"]; if (!result) { CFUUIDRef myCFUUID = CFUUIDCreate(kCFAllocatorDefault); result = (__bridge_transfer NSString *) CFUUIDCreateString(kCFAllocatorDefault, myCFUUID); [defaults setObject: result forKey: @"appID"]; [defaults synchronize]; CFRelease(myCFUUID); } } return result; } |