日期分类

标签：ios   nsdate   

日期中按年，月，日，分，时，星期，昨天，今天显示

@interface NSDate (PDate)

+(NSString *)stringWithTimeInterval:(NSTimeInterval)time;

- (BOOL)isYesterDay;

- (BOOL)isToday;

- (NSString *)stringWithExcludeThisYear;

- (BOOL)isEqualToDateIgnorTime:(NSDate *)date;

@end

//

//  NSDate+PDate.m

//

//  Created by hairong chen on 15/8/7.

//  Copyright (c) 2015年  All rights reserved.

//

#import "NSDate+PDate.h"

@implementation NSDate (PDate)

- (NSDateComponents *)componentsOfDay

{

    return [[NSCalendarcurrentCalendar]components:NSCalendarUnitYear|NSCalendarUnitMonth|NSCalendarUnitDay|NSCalendarUnitWeekday|NSCalendarUnitHour|NSCalendarUnitMinute|NSCalendarUnitSecond|NSCalendarUnitNanosecondfromDate:self];

}

- (BOOL)isEqualToDateIgnorTime:(NSDate *)date

{

   NSDateComponents *components = [selfcomponentsOfDay];

   NSDateComponents *componentd = [datecomponentsOfDay];

   return (componentd.year == components.year && components.month == componentd.month && components.day == componentd.day);

}

- (NSString *)stringWithExcludeThisYear

{

   BOOL isThisYear =NO;

   NSDate *nowDate = [NSDatedate];

    if ([nowDatecomponentsOfDay].year != [selfcomponentsOfDay].year) {

        isThisYear =NO;

    }else{

        isThisYear =YES;

    }

    NSDateFormatter *formatter = [[NSDateFormatteralloc]init];

   if (isThisYear) {

        [formattersetDateFormat:@"MM月dd日"];

    }else{

        [formattersetDateFormat:@"yyyy年MM月dd日"];

    }

   return [formatterstringFromDate:self];

}

//判断是否是今天

- (BOOL)isToday

{

   NSDate *date = [NSDatedate];

    return [selfisEqualToDateIgnorTime:date];

}

//判断是否是昨天

- (BOOL)isYesterDay

{

    NSTimeInterval time = [[NSDatedate]timeIntervalSince1970]-24*60*60;

   NSDate *yesterDayDate = [NSDatedateWithTimeIntervalSince1970:time];

   return [selfisEqualToDateIgnorTime:yesterDayDate];

}

+(NSString *)stringWithTimeInterval:(NSTimeInterval)time

{

    NSDate *date = [NSDatedateWithTimeIntervalSince1970:time];

   NSInteger hour = [datecomponentsOfDay].hour;

   NSInteger minute = [datecomponentsOfDay].minute;

    NSTimeInterval nowTime = [[NSDatedate]timeIntervalSince1970];

   if (nowTime - time>=7*24*60*60) {

        NSDateFormatter *formatter = [[NSDateFormatteralloc]init];

        [formattersetDateFormat:@"yyyy年MM月dd日 HH:mm"];

       return [formatterstringFromDate:date];

    }else{

       if ([dateisToday]) {

           return [NSStringstringWithFormat:@"今天 %ld:%ld",hour,minute];

        }elseif ([dateisYesterDay]){

           return [NSStringstringWithFormat:@"昨天 %ld:%ld",hour,minute];

        }else{

           NSArray *weekInfo =

@[@"星期日",@"星期一",@"星期二",@"星期三",@"星期四",@"星期五",@"星期六"];

           NSInteger weekDay = [datecomponentsOfDay].weekday;

           NSString *weekString = weekInfo[weekDay -1];

           return [NSStringstringWithFormat:@"%@ %ld:%ld",weekString, hour,minute];

        }

    }

}

@end

日期分类

标签：ios   nsdate   

原文地址：http://blog.csdn.net/baitxaps/article/details/47345607