常用的一些时间格式常用的一些时间格式

1.NSString 转 NSDate格式：

- (NSDate *)stringToDate:(NSSTring *)str { NSDateFormatter *dateFormatter = [NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM"]; //自己改变日期格式 [dateFormatter setTimeZone:[NSTimeZone timeZoneForSecondsFromGMT:8]]; //解决八小时时差的问题 NSDate *myDate = [dateFormatter dateFromString:str]; return myDate; }

2.NSDate 转 NSString格式：

- (NSString *)dateToString:(NSDate *)dateTime { NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; [dateFormatter setDateFormat:@"yyyy-MM"]; //自己改变日期格式 NSString *strDate = [dateFormatter stringFromDate:dateTime]; return strDate; }

3.两个相同的时间日期格式相减：

- (double)dateSecondDifference:(NSString *)startTime endTime:(NSString *)endTime { NSDateFormatter *date = [[NSDateFormatter alloc]init]; [date setDateFormat:@"yyyyMMddHHmmss"]; NSDate *startD =[date dateFromString:startTime]; NSDate *endD = [date dateFromString:endTime]; NSTimeInterval start = [startD timeIntervalSince1970]*1; NSTimeInterval end = [endD timeIntervalSince1970]*1; NSTimeInterval value = https://www.it610.com/article/end - start; float timeF = (float)value; return timeF; }

4.一个是日期格式，获取多少秒之后的日期写法：

- (NSString *)dateAddTime:(NSString *)startTime endTime:(NSString *)endTime { NSDateFormatter *date = [[NSDateFormatter alloc]init]; [date setDateFormat:@"yyyyMMddHHmmss"]; NSDate *startD =[date dateFromString:startTime]; NSDate *endD = [date dateFromString:endTime]; NSTimeInterval start = [startD timeIntervalSince1970]*1; NSTimeInterval end = [endD timeIntervalSince1970]*1; NSTimeInterval value = https://www.it610.com/article/start + end; NSString *timDD = [self timeDateFormatted:value]; return timDD; }- (NSString *)timeDateFormatted:(NSInteger)totalSeconds{ NSDate *date = [[NSDate alloc] initWithTimeIntervalSince1970:totalSeconds]; NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init]; dateFormatter.dateFormat = @"yyyyMMddHHmmss"; return [dateFormatter stringFromDate:date]; }

5.日期格式返回时分秒：

-(NSString *)getSSFromSS:(NSString *)totalTime{ NSInteger seconds = [totalTime integerValue]; //format of minute NSString *str_minute = [NSString stringWithFormat:@"%02ld",(seconds%3600)/60]; //format of second NSString *str_second = [NSString stringWithFormat:@"%02ld",seconds%60]; //format of time NSString *format_time = [NSString stringWithFormat:@"%@:%@",str_minute,str_second]; return format_time; }

6.获取当前时间字符串格式:

- (NSString *)getGpsCurrentTime:(NSDate *)date {NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; [formatter setDateFormat:@"yyyyMMddHHmmss"]; NSString *dateTime = [formatter stringFromDate:date]; return dateTime; }

【常用的一些时间格式】7.获取当前时间date格式，转8小时制:

- (NSDate *)getCurrenDate { NSDate *date = [NSDate date]; NSTimeZone *zone = [NSTimeZone systemTimeZone]; NSInteger interval = [zone secondsFromGMTForDate: date]; NSDate *localeDate = [datedateByAddingTimeInterval: interval]; return localeDate; }