+ (NSTimeInterval)getTimeIntervalWithDateStr:(NSString *)dateString
{
NSDate *tempDate = [self getDateFromString:dateString formatterStr:@"YYYY-MM-dd HH:mm:ss"];
NSTimeInterval timeInterval = (long)[tempDate timeIntervalSince1970];
return timeInterval;
}
- 获取当前时间(YYYY-MM-dd hh:mm:ss )
+ (NSString *)currentDateStr
{
NSDate *currentDate = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"YYYY-MM-dd HH:mm:ss"];
NSString *dateString = [dateFormatter stringFromDate:currentDate];
return dateString;
}
- 获取当前时间(YYYY-MM-dd hh:mm:ss )
+ (NSDate *)getCurrentDate
{
NSDate *data = [NSDate dateWithTimeIntervalSinceNow:0];
return data;
}
- 8601国际标准时间字符串(yyyy-MM-dd'T'HH:mm:ss)转化成NsDate(yyyy-MM-dd HH:mm:ss)
+ (NSDate *)getDateFromISOString:(NSString *)dateStr
{
NSDateFormatter *formatter = [self setDateFormatterWithString:@"yyyy-MM-dd'T'HH:mm:ss"];
NSLocale *posix = [[NSLocale alloc] initWithLocaleIdentifier:@"zh_CN"];
[formatter setLocale:posix];
NSDate *date = [formatter dateFromString:dateStr];
return date;
}
- 计算两个日期之间的时间戳
inBegin与inEnd 时间 顺序为 inBegin ---> inEnd 是正值, 顺序为inEnd ---> inBegin 是负值)
+ (NSInteger)calcIntervalFromBegin:(NSDate *)inBegin end:(NSDate *)inEnd
{
NSTimeInterval interval = [inEnd timeIntervalSinceDate:inBegin];
return (NSInteger)interval;
}
+ (NSInteger)calcDaysFromBegin:(NSDate *)inBegin end:(NSDate *)inEnd
{
NSInteger unitFlags = NSCalendarUnitDay| NSCalendarUnitMonth | NSCalendarUnitYear;
NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *comps = [cal components:unitFlags fromDate:inBegin];
NSDate *newBegin = [cal dateFromComponents:comps];
NSDateComponents *comps2 = [cal components:unitFlags fromDate:inEnd];
NSDate *newEnd = [cal dateFromComponents:comps2];
NSDateComponents *dayComponents = [cal components:unitFlags fromDate:newBegin toDate:newEnd options:0];
return [dayComponents day];
}
+ (NSDate *)getPriousorLaterDateFromDate:(NSDate *)date withMonth:(int)month
{
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setMonth:month];
NSCalendar *calender = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *mDate = [calender dateByAddingComponents:comps toDate:date options:0];
return mDate;
}
+ (NSDate *)getDayLaterDateFromDate:(NSDate *)date withDay:(int)day
{
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setDay:day];
NSCalendar *calender = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *mDate = [calender dateByAddingComponents:comps toDate:date options:0];
return mDate;
}
+ (NSString *)getDayLaterDateFromDateStr:(NSString *)dateStr withDay:(int)day
{
NSDate *date = [self getDateFromString:dateStr formatterStr:@"yyyy-MM-dd HH:mm:ss"];
NSDateComponents *comps = [[NSDateComponents alloc] init];
[comps setDay:day];
NSCalendar *calender = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDate *mDate = [calender dateByAddingComponents:comps toDate:date options:0];
NSString *mDateStr = [self getStringFromDate:mDate formatterStr:@"yyyy-MM-dd HH:mm:ss"];
return mDateStr;
}
+ (NSInteger)getYearFrameDate:(NSDate *)date
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSUInteger unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:date];
NSInteger year = [dateComponent year];
return year;
}
+ (NSInteger)getMonthFrameDate:(NSDate *)date
{
NSCalendar *calendar = [NSCalendar currentCalendar];
NSUInteger unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSDateComponents *dateComponent = [calendar components:unitFlags fromDate:date];
NSInteger month = [dateComponent month];
return month;
}
+ (NSString *)weekDayStringFromDate:(NSDate *)date
{
NSArray *weekdays = [NSArray arrayWithObjects:@"",@"周日",@"周一",@"周二",@"周三",@"周四",@"周五",@"周六", nil];
NSCalendar *calendar = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSTimeZone *timeZone = [[NSTimeZone alloc] initWithName:@"Asia/Shanghai"];
[calendar setTimeZone:timeZone];
NSCalendarUnit calendarUnit = NSCalendarUnitWeekday;
NSDateComponents *theComponents = [calendar components:calendarUnit fromDate:date];
NSString *weekDay = [weekdays objectAtIndex:theComponents.weekday];
return weekDay;
}
+ (BOOL)isThisYear:(NSDate *)date
{
NSCalendar *calendar = [NSCalendar currentCalendar];
int unit = NSCalendarUnitYear;
NSDateComponents *nowCmps = [calendar components:unit fromDate:[NSDate date]];
NSDateComponents *selfCmps = [calendar components:unit fromDate:date];
return nowCmps.year == selfCmps.year;
}
- 将时间戳转换为格式化后的字符串 (刚刚 几分钟前 几小时前 几天以前...)
+ (NSString *)timeBeforeInfoWithString:(NSString *)dateString
{
NSDate *date = [self getDateFromString:dateString formatterStr:@"YYYY-MM-dd HH:mm:ss"];
// 先 计算时间差
/*
//方法1. 时间戳 计算 时间差
NSTimeInterval timeInt = [self calcIntervalFromBegin:date end:[self getCurrentDate]];
int year = timeInt / (3600 * 24 * 30 *12);
int month = timeInt / (3600 * 24 * 30);
int day = timeInt / (3600 * 24);
int hour = timeInt / 3600;
int minute = timeInt / 60;
int second = timeInt;
*/
// 方法2. NSDateComponents 计算时间差
NSInteger unitFlags = NSCalendarUnitYear | NSCalendarUnitMonth | NSCalendarUnitDay | NSCalendarUnitHour | NSCalendarUnitMinute | NSCalendarUnitSecond;
NSCalendar *cal = [[NSCalendar alloc] initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
NSDateComponents *dayComponents = [cal components:unitFlags fromDate:date toDate:[self getCurrentDate] options:0];
NSInteger year = dayComponents.year;
NSInteger month = dayComponents.month;
NSInteger day = dayComponents.day;
NSInteger hour = dayComponents.hour;
NSInteger minute = dayComponents.minute;
NSInteger second = dayComponents.second;
if (year > 0) {
return [NSString stringWithFormat:@"%ld年以前",year];
}else if(month > 0){
return [NSString stringWithFormat:@"%ld个月以前",month];
}else if(day > 0){
return [NSString stringWithFormat:@"%ld天以前",day];
}else if(hour > 0){
return [NSString stringWithFormat:@"%ld小时以前",hour];
}else if(minute > 0){
return [NSString stringWithFormat:@"%ld分钟以前",minute];
}else{
return [NSString stringWithFormat:@"刚刚"];
}
}
- NSDate转化成日期字符串(yyyy-MM-dd HH:mm:ss)
+ (NSString *)getStringFromDate:(NSDate *)date formatterStr:(NSString *)formatterStr
{
NSDateFormatter *formatter = [self setDateFormatterWithString:formatterStr];
NSString *dateStr = [formatter stringFromDate:date];
return dateStr;
}
- 日期字符串转化成NSDate(yyyy-MM-dd HH:mm:ss)
+ (NSDate *)getDateFromString:(NSString *)dateStr formatterStr:(NSString *)formatterStr
{
NSDateFormatter *formatter = [self setDateFormatterWithString:formatterStr];
NSDate *date = [formatter dateFromString:dateStr];
return date;
}
- 格式化日期 yyyy-MM-dd HH:mm:ss
+ (NSDate *)dateWithFormat:(NSDate *)date
{
NSDateFormatter *formatter = [self setDateFormatterWithString:@"yyyy-MM-dd HH:mm:ss"];
NSString *selfStr = [formatter stringFromDate:date];
return [formatter dateFromString:selfStr];
}
+ (NSDateFormatter *)setDateFormatterWithString:(NSString *)dateFormatter
{
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
[formatter setDateFormat:dateFormatter];
return formatter;
}
