//第一种方式
1普通格式转化，需要加减8个小时的时间
#if0
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
//设置日期格式,最后的结果以该格式为准
formatter.dateFormat =@"yy年MM月dd hh点mm分ss秒";
NSDate *n = [NSDate date];
NSString *result = [formatter stringFromDate:n];
NSLog(@"result = %@", n);
#endif
第二种格式转化，常用方法 //pub_time代表的是网络数据获取的参数属性
- (NSString*)pub_time //pub_time 为网络请求数据的时间戳属性
{
NSString*ret =@"";
NSCalendar*cal = [NSCalendarcurrentCalendar];//日历对象
//将时间戳转换为日期对象
NSDate*pubtime = [NSDatedateWithTimeIntervalSince1970:_pub_time.doubleValue];
NSDate*now = [NSDatedate];
//获取指定日期的指定部分
NSDateComponents*pubComponents = [calcomponents:NSCalendarUnitDay|NSCalendarUnitMonth|NSCalendarUnitHour|NSCalendarUnitMinutefromDate:pubtime];
NSDateComponents*nowCompents = [calcomponents:NSCalendarUnitDay|NSCalendarUnitMonth|NSCalendarUnitHour|NSCalendarUnitMinutefromDate:now];
//针对不同需求进行选择
if(pubComponents.day- nowCompents.day!=0) {
ret = [NSStringstringWithFormat:@"%02ld-%02ld", pubComponents.month, pubComponents.day];
}
else
{
ret = [NSStringstringWithFormat:@"%02ld:%02ld", pubComponents.hour, pubComponents.minute];
}
returnret;
}
