1 -(NSString *) FormartTime:(NSDate*) compareDate 2 { 3     if( compareDate == nil ) return @""; 4      5     NSTimeInterval  timeInterval = [compareDate timeIntervalSinceNow]; 6     timeInterval = -timeInterval; 7     long temp = timeInterval; 8     NSString *result; 9     10     if (timeInterval < 60) {11         if( temp == 0 )12             result = @"刚刚";13         else14             result = [NSString stringWithFormat:@"%d秒前",(int)temp];15     }16     else if(( timeInterval/60) <60){17         result = [NSString stringWithFormat:@"%d分钟前",(int)temp/60];18     }19     20     else if(( temp/86400) <30){21         22         NSDateFormatter *date = [[NSDateFormatter alloc] init];23         [date setDateFormat:@"dd"];24         NSString *str = [date stringFromDate:[NSDate date]];25         int nowday = [str intValue];26         27         NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];28         [dateFormatter setDateFormat:@"dd"];29         NSString *strDate = [dateFormatter stringFromDate:compareDate];30         int day = [strDate intValue];31         if (nowday-day==0) {32             //[dateFormatter setDateFormat:@"今天 HH:mm"];33             [dateFormatter setDateFormat:@"HH:mm"];34             result =    [dateFormatter stringFromDate:compareDate];35             36         }37         else if(nowday-day==1)38         {39             40             [dateFormatter setDateFormat:@"昨天 HH:mm"];41             // result =  [dateFormatter stringFromDate:compareDate];42             result =  @"昨天";43             44         }45         46         else if( temp < 8 )47         {48             if (temp==1) {49                 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];50                 [dateFormatter setDateFormat:@"昨天HH:mm"];51                 NSString *strDate = [dateFormatter stringFromDate:compareDate];52                 result = strDate;53             }54             else if(temp == 2)55             {56                 NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];57                 [dateFormatter setDateFormat:@"前天HH:mm"];58                 NSString *strDate = [dateFormatter stringFromDate:compareDate];59                 result = strDate;60             }61             62         }63         else64         {65             NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];66             [dateFormatter setDateFormat:@"MM-dd HH:mm"];67             NSString *strDate = [dateFormatter stringFromDate:compareDate];68             result = strDate;69             70         }71     }72     else73     {
   //超过一个月的就直接显示时间了74         NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];75         [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm"];76         NSString *strDate = [dateFormatter stringFromDate:compareDate];77         result = strDate;78     }79     80     /*81      else if((temp = (temp/(3600*24))/30) <12){82      result = [NSString stringWithFormat:@"%d个月前",(int)temp];83      }84      else{85      temp = temp/12;86      result = [NSString stringWithFormat:@"%d年前",(int)temp];87      }88      */89     90     return  result;91 }