按照指定格式返回时间戳

按照指定格式返回时间戳

//需求: 
//1，一分钟之内的显示“刚刚” 
//2，一分钟以上且一个小时之内的，显示“多少分钟前”，例如“5分钟前” 
//3，1小时以内的字颜色为黄色（以上三点与目前一样） 
//4，1小时以上三天以内的显示“今天/昨天/前天+具体时间” 
//5，前天以后的显示"日期+具体时间",如"2月11日 20:19" 
//数据前提: 
//1, 提供一个时间串(貌似是这样叫的吧) 
//方法调用: 
//1, [类名 timeStrTotimeStamp:时间串]; 
//方法来源: 
//1, 通过网络代码进行改造

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//按照指定格式返回时间 (日期+具体时间",如"2月11日 20:19") +(NSString *)speTimewithTimeStr:(NSString *)timeStr{     NSDateFormatter *formatter = [[[NSDateFormatter alloc]init]autorelease];     [formatter setDateFormat:@"MM月dd日 HH:mm:ss"];     NSTimeInterval timeInterval = [timeStr intValue];     NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeInterval];     NSString *str =  [formatter stringFromDate:confromTimesp];     return str; }   //返回时间所在日期当天的准确时间. (20:19) +(NSString *)smallTimewithTimeStr:(NSString *)timeStr{     NSDateFormatter *formatter = [[[NSDateFormatter alloc]init]autorelease];     [formatter setDateFormat:@" HH:mm:ss"];     NSTimeInterval timeInterval = [timeStr intValue];     NSDate *confromTimesp = [NSDate dateWithTimeIntervalSince1970:timeInterval];     NSString *str =  [formatter stringFromDate:confromTimesp];     return str; }     //判断两个日期是否是同一天 +(BOOL)isSameDay:(NSDate*)date1 date2:(NSDate*)date2 {     NSCalendar* calendar = [NSCalendar currentCalendar];     unsigned unitFlags = NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit;     NSDateComponents* comp1 = [calendar components:unitFlags fromDate:date1];     NSDateComponents* comp2 = [calendar components:unitFlags fromDate:date2];     return [comp1 day]   == [comp2 day] &&     [comp1 month] == [comp2 month] &&     [comp1 year]  == [comp2 year]; }     //时间转时间戳 +(NSString *)timeStrTotimeStamp:(id)timeStr{     //获取当前时间时间串     //与获得时间串进行对比     //根据时间差显示不同内容     //返回内容     int nowTime = [[DSUtils timeStamp] intValue];     int gapTime = nowTime - [timeStr intValue];     NSString *timeStamp = nil;     if (gapTime < 60) {         //一分钟内显示刚刚         timeStamp = [NSString stringWithFormat:@"刚刚"];     }else if(60<=gapTime && gapTime<60*60){         //一分钟以上且一个小时之内的，显示“多少分钟前”，例如“5分钟前”         timeStamp = [NSString stringWithFormat:@"%i分钟前",gapTime/60];     }else if (60*60<=gapTime && gapTime<60*60*24*3){         //1小时以上三天以内的显示“今天/昨天/前天+具体时间”         NSString *dayStr ;         int gapDay = gapTime/(60*60*24) ;         switch (gapDay) {             case 0:             {                 //在24小时内,存在跨天的现象. 判断两个时间是否在同一天内.                 NSDate *date1 = [NSDate date];                 NSTimeInterval timeInterval = [timeStr intValue];                 NSDate *date2 = [NSDate dateWithTimeIntervalSince1970:timeInterval];                 BOOL idSameDay = [DSUtils isSameDay:date1 date2:date2];                 if (idSameDay == YES) {                     dayStr = [NSString stringWithFormat:@"今天"];                 }else{                     dayStr = [NSString stringWithFormat:@"昨天"];                 }             }                 break;             case 1:                 dayStr = [NSString stringWithFormat:@"昨天"];                 break;             case 2:                 dayStr = [NSString stringWithFormat:@"前天"];                 break;             default:                 break;         } //        timeStamp = [dayStr stringByAppendingString:[DSUtils smallTimewithTimeStr:timeStrs]];         timeStamp = [NSString stringWithFormat:@"%@%@",dayStr,[DSUtils smallTimewithTimeStr:timeStr]];     }else{         //前天以后的显示"日期+具体时间",如"2月11日 20:19"         timeStamp = [NSString stringWithString:[DSUtils speTimewithTimeStr:timeStr]];     }     return [timeStamp copy]; }