注:以下方法都是写在NSDate的分类中
一 获取当前时间的时间戳
- 获取当前时间戳(以秒为单位)
+(NSString *)getNowTimeSecondTimestamp{
NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[[NSDate date] timeIntervalSince1970]];
return timeSp;
}
- 获取当前时间戳(以毫秒为单位）
+(NSString *)getNowTimeMillisecondTimestamp{
NSDateFormatter * formatter = [[NSDateFormatter alloc ] init];
[formatter setDateFormat:@"SSS"];
NSString *sssStr = [formatter stringFromDate:[NSDate date]];
NSTimeInterval resultSSS= [[NSDate date] timeIntervalSince1970]*1000+ sssStr.integerValue;
return [NSString stringWithFormat:@"%.0f",resultSSS];
}
二 评论模块时间的显示
- 宏定义
#define G_MINUTE 60
#define G_HOUR 3600
#define G_DAY 86400
#define G_WEEK 604800
#define G_YEAR 31556926
- 需求一:
- 1分钟内显示为“刚刚”，
- 大于1分钟小于1小时显示为“n分钟前”，
- 大于1小时小于一天显示为“n小时前”，
- 大于1天小于7天显示为“n天前”，其他时间显示年月日
//后端返回的是毫秒时间戳
+ (NSString *)dateStyleCommentProductManagerTimeIntervalToDateString:(NSString *)timeInterval{
if (timeInterval.length<10) {
return @"";
}
//转化为秒单位时间戳
NSMutableString *mutabletimeInterval=[[NSMutableString alloc]initWithString:timeInterval];
[mutabletimeInterval insertString:@"." atIndex:10];
NSTimeInterval timeInter = mutabletimeInterval.doubleValue;
NSTimeInterval timeNowInter = [NSDate getNowTimeSecondTimestamp].doubleValue;
NSTimeInterval timeDvalue = timeNowInter-timeInter;
NSString *dateString = [NSDate dateTimeIntervalToDateString:timeInterval];
if (timeNowInter-timeInter<G_MINUTE) {//1分钟内显示为“刚刚”
dateString = @"刚刚";
}else if ((timeDvalue>=G_MINUTE)&&(timeDvalue<G_HOUR)){//大于1分钟小于1小时显示为“n分钟前”
dateString = [NSString stringWithFormat:@"%.0f分钟前",timeDvalue/G_MINUTE];
}else if ((timeDvalue>=G_HOUR)&&(timeDvalue<G_DAY)){//大于1小时小于一天显示为“n小时前”
dateString = [NSString stringWithFormat:@"%.0f小时前",timeDvalue/G_HOUR];
}else if ((timeDvalue>=G_DAY)&&(timeDvalue<G_WEEK)){//大于1天小于7天显示为“n天前”
dateString = [NSString stringWithFormat:@"%.0f天前",timeDvalue/G_DAY];
}//其他时间显示年月日
NSLog(@"%@",dateString);
return dateString;
}
- 需求二:
- 今年以前显示"年月日"
- 今年今天
2.1 一分钟内显示为“刚刚”，
2.2 大于1分钟小于1小时显示为“n分钟前”，
2.3 大于1小时小于一天显示为“n小时前”，- 今年昨天显示"昨天"
- 今年昨天以前显示"月日"
+ (NSString *)dateStyleCommentTimeIntervalToDateString:(NSString *)timeInterval{
if (timeInterval.length<10) {
return @"";
}
NSMutableString *mutabletimeInterval=[[NSMutableString alloc]initWithString:timeInterval];
[mutabletimeInterval insertString:@"." atIndex:10];
NSTimeInterval timeInter = mutabletimeInterval.doubleValue;
NSDate *createDate = [NSDate dateWithTimeIntervalSince1970:timeInter];
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = @"yyyy-MM-dd";// HH:mm:ss
NSString *dateStr = [formatter stringFromDate:createDate];
NSDateComponents *detalCmp = [createDate detalDateWithNow];
if ([createDate isThisYear]) {
if ([createDate isToday]) {
if (detalCmp.hour >= 1) { // 大于1小时
dateStr = [NSString stringWithFormat:@"%ld小时前",(long)detalCmp.hour];
} else if (detalCmp.minute > 1) { // 大于1分钟
dateStr = [NSString stringWithFormat:@"%ld分钟前",(long)detalCmp.minute];
} else { // 刚刚
dateStr = @"刚刚";
}
} else if ([createDate isYesterday]) { //昨天
formatter.dateFormat = @"昨天";
dateStr = [formatter stringFromDate:createDate];
} else { // 昨天之前
formatter.dateFormat = @"MM-dd";
dateStr = [formatter stringFromDate:createDate];
}
}
return dateStr;
}
- (NSDateComponents *)detalDateWithNow{
// 判断下发布日期 与 当前日期 小时，分差值
NSCalendar *currentCalendar = [NSCalendar currentCalendar];
NSInteger unit = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
// 获取两个日期的差值，获取发布日期与当前日期差值
return [currentCalendar components:unit fromDate:self toDate:[NSDate date] options:NSCalendarWrapComponents];
}
- (BOOL) isThisYear{
NSDateComponents *components1 = [[NSDate currentCalendar] components:NSCalendarUnitYear fromDate:self];
NSDateComponents *components2 = [[NSDate currentCalendar] components:NSCalendarUnitYear fromDate:[NSDate date]];
return (components1.year == components2.year);
}
- (BOOL) isToday{
NSDateComponents *components1 = [[NSDate currentCalendar] components:componentFlags fromDate:self];
NSDateComponents *components2 = [[NSDate currentCalendar] components:componentFlags fromDate:[NSDate date]];
return ((components1.year == components2.year) &&
(components1.month == components2.month) &&
(components1.day == components2.day));
}
- (BOOL) isYesterday{
NSDateComponents *dateComponents = [[NSDateComponents alloc] init];
[dateComponents setDay:-1];
NSDate *newDate = [[NSCalendar currentCalendar] dateByAddingComponents:dateComponents toDate:[NSDate date] options:0];
NSDateComponents *components1 = [[NSDate currentCalendar] components:componentFlags fromDate:self];
NSDateComponents *components2 = [[NSDate currentCalendar] components:componentFlags fromDate:newDate];
return ((components1.year == components2.year) &&
(components1.month == components2.month) &&
(components1.day == components2.day));
}
+ (NSCalendar *) currentCalendar{
static NSCalendar *sharedCalendar = nil;
if (!sharedCalendar)
sharedCalendar = [NSCalendar autoupdatingCurrentCalendar];
return sharedCalendar;
}
static const unsigned componentFlags = (NSCalendarUnitYear| NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitWeekOfMonth | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond | NSCalendarUnitWeekday | NSCalendarUnitWeekdayOrdinal);
