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iOS 基础类解析 - NSDate

2024-07-02 14:12:35   228人阅读

NSDate Class Reference

Inherits from
NSObject
Conforms to
NSCopying
NSSecureCoding
NSObject (NSObject)
Framework
/System/Library/Frameworks/Foundation.framework
Availability
Available in iOS 2.0 and later.
Declared in
NSDate.h
Companion guides
Date and Time Programming Guide
Property List Programming Guide
Related sample code
MVCNetworking
TableView Fundamentals for iOS
TopSongs
URLCache
XMLPerformance

Creating and Initializing Date Objects

  • + date
  • + dateWithTimeIntervalSinceNow:
  • + dateWithTimeInterval:sinceDate:
  • + dateWithTimeIntervalSinceReferenceDate:
  • + dateWithTimeIntervalSince1970:
  • – init
  • – initWithTimeIntervalSinceNow:
  • – initWithTimeInterval:sinceDate:
  • – initWithTimeIntervalSinceReferenceDate:
  • – initWithTimeIntervalSince1970:

Getting Temporal Boundaries

  • + distantFuture
  • + distantPast

Comparing Dates

  • – isEqualToDate:
  • – earlierDate:
  • – laterDate:
  • – compare:

Getting Time Intervals

  • – timeIntervalSinceDate:
  • – timeIntervalSinceNow
  • + timeIntervalSinceReferenceDate
  • – timeIntervalSinceReferenceDate
  • – timeIntervalSince1970

Adding a Time Interval

  • – dateByAddingTimeInterval:
  • – addTimeInterval: Deprecated in iOS 4.0

Representing Dates as Strings

  • – description
  • – descriptionWithLocale:


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