https://github.com/liuyubobobo/Swift-NSDate-Tutorial

Tutorials on how to use swift NSDate or related classes. NSDate, NSDateFormatter, NSCalendar, NSDateComponents, NSDateComponentsFormatter, etc included.
https://github.com/liuyubobobo/Swift-NSDate-Tutorial

Last synced: 25 days ago
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Tutorials on how to use swift NSDate or related classes. NSDate, NSDateFormatter, NSCalendar, NSDateComponents, NSDateComponentsFormatter, etc included.

• Host: GitHub
• URL: https://github.com/liuyubobobo/Swift-NSDate-Tutorial
• Owner: liuyubobobo
• Created: 2016-01-03T21:23:03.000Z (almost 9 years ago)
• Default Branch: master
• Last Pushed: 2016-01-04T06:38:28.000Z (almost 9 years ago)
• Last Synced: 2024-08-04T00:04:35.582Z (4 months ago)
• Language: Swift
• Homepage:
• Size: 102 KB
• Stars: 8
• Watchers: 4
• Forks: 2
• Open Issues: 0
• Metadata Files:
  • Readme: readme.md

Awesome Lists containing this project

• Awesome-Swift-Playgrounds - Swift Date Tutorial - Learn everythig about NSDate. ⏳ (Learning Swift: Advanced Topics)

README

        
#Playing with Swift Date

This 

project is aimed to show the basic use of Swift Date class. The contents are an implementation of [AppCoda](http://appcoda.com)'s tutorial. See  for details.

All the codes are tested on XCode 7.2 Swift 2.1.1 playground. 

The prject contains the uses of following classes or enums or structs:  

- **NSDate**  

- **NSDateFormatter**  

- **NSCalendar**  

- **NSDateComponents**  

- **NSDateComponentsFormatter**  

- **NSComparisonResult** enum  

- **NSCalendarUnit** struct  

I'm an open source project beginner and very interest in the open source community. I hope I can be one of them and am pretty likely to communicate with anyone who are already one of them. Please, please contact me if you have any suggestion. My Email:  :)

---

##Part I : Using NSDate and NSDateFormatter

- Create a **NSDate** object

- Create a **NSDateFormatter** object

- Use ``dateStyle`` property for **NSDateFormatter** to show predefined date format

- Given an **NSLocale** object to ``locale`` property of **NSDateFormatter** to show locale-related date format.

  - I use China locale in this example because I'm a Chinese:)

- Given an *date specifier string* to ``dateFormat`` property of **NSDateFormatter** to show custom date format

- Use **NSDateFormatter**'s ``dateFromString:`` method to convert a date string to an **NSDate** object

##PART II : Using NSDateComponents

- Create an **NSCalendar** object

- Convert an **NSDate** object into an **NSDateComponents** object using **NSCalendar**'s ``components:fromDate`` method

- Convert an **NSDateComponents** object back to an **NSDate** object using **NSCalendar**'s ``dateFromComponents:`` method

- See results of one date from different time zones by setting **NSDataComponent**s' ``timezone`` property

##PART III : Comparing Date and Time

- Compare two dates by **NSDate**'s ``earlierDate:`` and ``laterDate:`` methods

- Compare two dates by ``compare:`` function and **NSComparisonResult** enum

- Compare two dates by using **NSDate**'s ``timeIntervalSinceReferenceDate`` property

- Use ``isEqualToDate:`` to see if two **NSDate**s' objects are equal

##PART IV : Calculating Future and Past Dates

- Make use the **NSCalendar** class and **NSCalendarUnit** struct

- Make use the **NSDateComponents** object

- Use **NSDate**'s ``dateByAddingTimeInterval:`` method

  - This method may produce wrong results because of leap seconds, leap years, daylight saving time, and so on

- Substract a number of days from an **NSDate** object

##PART V : Calculating Date Difference

- Using the **NSCalendar**'s ``components:fromDate:toDate:options:`` method

- Using **NSDateComponentsFormatter**'s ``stringFromTimeInterval`` method

- Using **NSDateComponentsFormatter**'s ``stringFromDate:toDate`` method