What is the use of NSCoder in initWithCoder:? (Cocoa and Cocoa Touch)

Question

Whats the role of NSCoder here?

- (id)initWithCoder:(NSCoder *)coder
{
    self = [super initWithCoder:coder];
    if (self)
    {

    }
    return self;
}

This has absolutely nothing to do with Xcode.

BoltClock
– BoltClock

2012-02-06 07:31:20 +00:00
Commented Feb 6, 2012 at 7:31 — BoltClock
– BoltClock, Commented Feb 6, 2012 at 7:31

justin · Accepted Answer · 2012-02-06 07:28:37Z

1

NSCoder holds the state you saved the archive representation of the instance to initialize in -[id<NSCoding> encodeWithCoder:].

In other words, you encoded an instance of self at one point in time, now you need the coder's info to restore your state.

answered Feb 6, 2012 at 7:28

justin

105k14 gold badges185 silver badges227 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

craigmj · Accepted Answer · 2012-02-06 07:28:02Z

0

NSCoder handles archiving, most particularly in this typical case of a view, the archiving of a NIB. So when you initWithCoder the NIB is loaded, with the interface you've constructed in Interface Builder.

You can read more here: https://developer.apple.com/library/mac/#documentation/Cocoa/Reference/ApplicationKit/Protocols/NSNibAwaking_Protocol/Reference/Reference.html

answered Feb 6, 2012 at 7:28

craigmj

5,1172 gold badges21 silver badges22 bronze badges

Collectives™ on Stack Overflow

What is the use of NSCoder in initWithCoder:? (Cocoa and Cocoa Touch)

2 Answers 2

Comments

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Related