ios-时间换算
经常会遇到时间转换的，在此收藏一个时间换算的方法〜
1 #pragma mark 时间换算 2 3 + (NSString *)setcreateTime:(NSString *)str 4 { 5 //yyyy-MM-dd- HH:MMss"]; 6 7 8 NSDateFormatter* formatter = [[NSDateFormatter alloc] init]; 9 10 //[formatter setDateStyle:NSDateFormatterMediumStyle]; 11 12 //[formatter setTimeStyle:NSDateFormatterShortStyle]; 13 14 [formatter setDateFormat:@"yyyy"]; 15 16 [formatter setTimeZone:[NSTimeZone timeZoneWithAbbreviation:@"CCT"]]; 17 18 NSDate *date = [NSDate dateWithTimeIntervalSince1970:[str doubleValue]]; 19 20 NSString *dateStr = [formatter stringFromDate:date]; 21 22 //本地时间 23 NSDate * senddate=[NSDate date]; 24 NSDateFormatter * dateformatter=[[NSDateFormatter alloc] init]; 25 [dateformatter setDateFormat:@"YYYY"]; 26 NSString * locationString=[dateformatter stringFromDate:senddate]; 27 28 //[dateformatter setDateFormat:@"YYYY-MM-dd-HH-mm-ss"]; 29 30 //判断创建时间 与 本地时间 是否同一年 31 if ([dateStr isEqualToString:locationString]) { 32 [formatter setDateFormat:@"MM-dd HH:mm"]; 33 }else{ 34 [formatter setDateFormat:@"yyyy-MM-dd HH:mm"]; 35 } 36 37 date = [NSDate dateWithTimeIntervalSince1970:[str doubleValue]]; 38 dateStr = [formatter stringFromDate:date]; 39 40 return [self compareCurrentTime:date :dateStr]; 41 } 42 43 + (NSString *) compareCurrentTime:(NSDate*) compareDate :(NSString *)str 44 { 45 NSTimeInterval timeInterval = [compareDate timeIntervalSinceNow]; 46 timeInterval = -timeInterval; 47 long temp = 0; 48 NSString *result; 49 if (timeInterval < 60) { 50 if (timeInterval > 1) { 51 result = [NSString stringWithFormat:@"%d秒前",(int)timeInterval+1]; 52 }else if (timeInterval < -160){ 53 result = str; 54 } 55 else{ 56 result = [NSString stringWithFormat:@"%d秒前",1]; 57 } 58 59 } 60 else if((temp = timeInterval/60) <60){ 61 result = [NSString stringWithFormat:@"%ld分钟前",temp]; 62 }else{ 63 result = str; 64 } 65 66 67 68 return result; 69 }
