NSString *distanceTime = [self returnFromTheTimeOfToday:@"2016-09-29 01:45:10"]; #pragma mark 默认一分钟有60秒,一小时就60分钟 一天有24小时,一周有7天,一个月有30天,一年有12个月 不考虑其他的如平年2月28天,闰月29天这些情况 - (NSString *)returnFromTheTimeOfToday:(NSString *)timeStr { //timeStr 字符串格式->2016-09-29 01:45:10 NSDateFormatter *form = [[NSDateFormatter alloc] init]; //设置时区 form.locale = [NSLocale localeWithLocaleIdentifier:@"cn"]; form.dateFormat = @"yyyy-MM-dd HH:mm:ss"; NSDate *date = [form dateFromString:timeStr]; //得到当前的时间差 NSTimeInterval timeInterval = [date timeIntervalSinceNow]; timeInterval = -timeInterval; //然后进行时间的比较 if(timeInterval < 60) { return [NSString stringWithFormat:@"刚刚"]; } //分钟 NSInteger minute = timeInterval / 60; if(minute < 60) { return [NSString stringWithFormat:@"%ld分钟之前",minute]; } NSInteger hours = minute / 60; if(hours < 24) { return [NSString stringWithFormat:@"%ld小时之前",hours]; } NSInteger day = hours / 24; NSInteger month = day/30; NSInteger year = month/12; if(day <= 1) { form.dateFormat = @"HH:mm"; NSString *oldtime = [form stringFromDate:date]; return [NSString stringWithFormat:@"昨天 %@",oldtime]; } if(day < 7) { return [NSString stringWithFormat:@"%ld天之前",day]; } if((day/7)<4) { return [NSString stringWithFormat:@"%ld周之前",day/7]; } else if(month < 12) { return [NSString stringWithFormat:@"%ld月之前",month]; } else { form.dateFormat = @"yyyy-MM-dd HH:mm"; return [NSString stringWithFormat:@"%ld年之前",year]; } return nil; }