iOS 利用KeyChain+ IDFV + BundleID 来作为UUID,保证传给服务端的UUID唯一
- 查了相关资料,发现只有KeyChain + IDFV可以保证UUID唯一,参考以下代码 , UICKeyChainStore
+ (NSString*)identifierForVender{ UICKeyChainStore *keyChain = [UICKeyChainStore keyChainStore]; NSString *bundleID = [[NSBundle mainBundle] bundleIdentifier]; bool keyExist = [keyChain contains:bundleID]; NSString *uuidStr = nil; if (keyExist) { uuidStr = [keyChain stringForKey:bundleID]; return uuidStr; } uuidStr = [[[[UIDevice currentDevice] identifierForVendor] UUIDString] stringByAppendingString:bundleID]; NSLog(@"uuidStr2:%@",uuidStr); [keyChain setString:uuidStr forKey:bundleID]; return uuidStr; }
- 对于同一个设备上的com.company.app1 和com.company.app2 含有相同的IDFV,所以在最后再拼接一个BundleID即可标志整个UUID唯一(服务端根据这个UUID映射Token,这样尽管用户重装APP,UUID不变,覆盖旧的Token即可)
- IDFV会变化的几种情况(参考)
- 变化的情况:删除手机上所有相同Vendor后再安装新的,TestFlight安装的,还有ad-hoc安装的;