-(NSTimeInterval)timeIntervalSince1970
NSDate *date = [NSDate dateWithTimeIntervalSince1970:timeStamp];
NSDateFormatter*format =[[NSDateFormatter alloc] init]; format.dateFormat =@"dd-MM-yyyy"; NSLog(@"%@",[format stringFromDate:[NSDatenew]]);
NSDate code snippet,布布扣,bubuko.com
原文：http://www.cnblogs.com/hwei/p/3637100.html