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NSString * strUUID = ( NSString *)[SPIMyUUID load: @"KEY_USERNAME_PASSWORD" ]; //首次执行该方法时,uuid为空 if ([strUUID isEqualToString: @"" ] || !strUUID) { //生成一个uuid的方法 CFUUIDRef uuidRef = CFUUIDCreate(kCFAllocatorDefault); strUUID = ( NSString *)CFBridgingRelease(CFUUIDCreateString (kCFAllocatorDefault,uuidRef)); } NSLog ( @"%@" ,strUUID); |