【Foundation-18-2】NSDate.h - 时间操作

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最新推荐文章于 2024-06-25 08:00:00 发布

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本文链接：https://blog.youkuaiyun.com/u013059266/article/details/49202921

本文详细介绍了NSDate类的扩展方法，包括获取不同基准时间的时间间隔、日期拼接、日期比较等功能，并提供了具体的使用示例。

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FOUNDATION_EXPORTNSString *const NSSystemClockDidChangeNotificationNS_AVAILABLE(10_6,4_0);

@interface NSDate (NSExtendedDate)

// 时间间隔

@property (readonly)NSTimeInterval timeIntervalSinceNow;

@property (readonly)NSTimeInterval timeIntervalSince1970;

+ (NSTimeInterval)timeIntervalSinceReferenceDate;

- (NSTimeInterval)timeIntervalSinceDate:(NSDate *)anotherDate;

    [date1 timeIntervalSinceNow];
    [date1 timeIntervalSince1970];
    [date1 timeIntervalSinceReferenceDate];
    [date1 timeIntervalSinceDate:date1];

// 拼接时间间隔

- (instancetype)dateByAddingTimeInterval:(NSTimeInterval)tiNS_AVAILABLE(10_6,2_0);

    NSDate *date = [date1 dateByAddingTimeInterval:60];

//判断返回符合条件的 date

- (NSDate *)earlierDate:(NSDate *)anotherDate;

- (NSDate *)laterDate:(NSDate *)anotherDate;

//    NSDate  *date = [date1 earlierDate:date2];
    NSDate *date = [date2 laterDate:date1];

//比较时间先后顺序

- (NSComparisonResult)compare:(NSDate *)other;

- (BOOL)isEqualToDate:(NSDate *)otherDate;

 NSComparisonResult comper = [date1 compare:date2];
    if (comper == NSOrderedAscending) {
        NSLog(@"升");
    }else if (comper == NSOrderedSame){
        NSLog(@"same");
    }else if (comper == NSOrderedDescending){
        NSLog(@"降");
    }else{
        NSLog(@"error");
    }
    
    
    if ([date1 isEqualToDate:date2]) {
        NSLog(@"eq");
    }else{
        NSLog(@"noeq");
    }

// 0 时区的时间现在（本地化时间研究 NSLocale）

@property (readonly, copy) NSString *description;

- (NSString *)descriptionWithLocale:(id)locale;

  NSLog(@"description:%@",date1.description);
  NSLog(@"description:%@",[date1 descriptionWithLocale:@8]);

@end