iOS获取唯一UUID/UDID的解决方案

SFHFKeychainUtils （点击下载）是一个封装了KeyChain简单操作的第三方类库

1、引入Security.frameWork框架。

2、引入头文件：SFHKeychainUtils.h.（注意：SFHKeychainUtils为MRC，在ARC环境需配置如下）

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3、方法如下

#pragma mark -获取唯一UUID

- (NSString*)UUID {

     NSDictionary *infoDict = [[NSBundle mainBundle] infoDictionary];

     NSString *userName = infoDict[@"CFBundleName"];

     NSString *serviceName = infoDict[@"CFBundleIdentifier"];

     NSString *UUID = [SFHFKeychainUtils getPasswordForUsername:userName         andServiceName:serviceName error:nil];

     if (UUID.length==0) {

          UUID = [[[UIDevice currentDevice] identifierForVendor] UUIDString];

          [SFHFKeychainUtils storeUsername:userName andPassword:UUID forServiceName:serviceName updateExisting:1 error:nil];

      }

         returnUUID;

}