1 /** 2 * 計算上次日期距離現在多久 3 * 4 * @param lastTime 上次日期(需要和格式對應) 5 * @param format1 上次日期格式 6 * @param currentTime 最近日期(需要和格式對應) 7 * @param format2 最近日期格式 8 * 9 * @return xx分鍾前、xx小時前、xx天前 10 */ 11 + (NSString *)timeIntervalFromLastTime:(NSString *)lastTime 12 lastTimeFormat:(NSString *)format1 13 ToCurrentTime:(NSString *)currentTime 14 currentTimeFormat:(NSString *)format2{ 15 //上次時間 16 NSDateFormatter *dateFormatter1 = [[NSDateFormatter alloc]init]; 17 dateFormatter1.dateFormat = format1; 18 NSDate *lastDate = [dateFormatter1 dateFromString:lastTime]; 19 //當前時間 20 NSDateFormatter *dateFormatter2 = [[NSDateFormatter alloc]init]; 21 dateFormatter2.dateFormat = format2; 22 NSDate *currentDate = [dateFormatter2 dateFromString:currentTime]; 23 return [Utilities timeIntervalFromLastTime:lastDate ToCurrentTime:currentDate]; 24 } 25 26 + (NSString *)timeIntervalFromLastTime:(NSDate *)lastTime ToCurrentTime:(NSDate *)currentTime{ 27 NSTimeZone *timeZone = [NSTimeZone systemTimeZone]; 28 //上次時間 29 NSDate *lastDate = [lastTime dateByAddingTimeInterval:[timeZone secondsFromGMTForDate:lastTime]]; 30 //當前時間 31 NSDate *currentDate = [currentTime dateByAddingTimeInterval:[timeZone secondsFromGMTForDate:currentTime]]; 32 //時間間隔 33 NSInteger intevalTime = [currentDate timeIntervalSinceReferenceDate] - [lastDate timeIntervalSinceReferenceDate]; 34 35 //秒、分、小時、天、月、年 36 NSInteger minutes = intevalTime / 60; 37 NSInteger hours = intevalTime / 60 / 60; 38 NSInteger day = intevalTime / 60 / 60 / 24; 39 NSInteger month = intevalTime / 60 / 60 / 24 / 30; 40 NSInteger yers = intevalTime / 60 / 60 / 24 / 365; 41 42 if (minutes <= 10) { 43 return @"剛剛"; 44 }else if (minutes < 60){ 45 return [NSString stringWithFormat: @"%ld分鍾前",(long)minutes]; 46 }else if (hours < 24){ 47 return [NSString stringWithFormat: @"%ld小時前",(long)hours]; 48 }else if (day < 30){ 49 return [NSString stringWithFormat: @"%ld天前",(long)day]; 50 }else if (month < 12){ 51 NSDateFormatter * df =[[NSDateFormatter alloc]init]; 52 df.dateFormat = @"M月d日"; 53 NSString * time = [df stringFromDate:lastDate]; 54 return time; 55 }else if (yers >= 1){ 56 NSDateFormatter * df =[[NSDateFormatter alloc]init]; 57 df.dateFormat = @"yyyy年M月d日"; 58 NSString * time = [df stringFromDate:lastDate]; 59 return time; 60 } 61 return @""; 62 } 63 64 使用如下: 65 NSLog(@"\n\nresult: %@", [Utilities timeIntervalFromLastTime:@"2015年12月8日 15:50" 66 lastTimeFormat:@"yyyy年MM月dd日 HH:mm" 67 ToCurrentTime:@"2015/12/08 16:12" 68 currentTimeFormat:@"yyyy/MM/dd HH:mm"]); 69 70 輸出結果如下:
