NSString NSDate 计算时间差

    NSDate * now = [NSDate date];

    NSDateFormatter *df = [[NSDateFormatter alloc] init];

    [df setDateFormat:@"yyyy-MM-dd"];

    NSLocale *locale = [[NSLocale alloc] initWithLocaleIdentifier:@"en_US"];//本地化

    [df setLocale:locale];

    NSString *myDateString =  @"2013-04-09";

    NSDate *myDate = [df dateFromString:myDateString];

    NSTimeInterval timeBetween = [now timeIntervalSinceDate:myDate];

    NSLog(@"%f",timeBetween);

NSString NSDate 计算时间差,布布扣,bubuko.com

NSString NSDate 计算时间差

原文：http://blog.csdn.net/leochang130731/article/details/23290821