What is it called when you are awake from the nib?
49. awakeFromNib gets called after the view and its subviews were allocated and initialized. It is guaranteed that the view will have all its outlet instance variables set.
When to use awakeFromNib?
Typically, you implement awakeFromNib for objects that require additional set up that cannot be done at design time. For example, you might use this method to customize the default configuration of any controls to match user preferences or the values in other controls.
When to use initWithCoder?
2 Answers. You are supposed to use the initWithCoder: method when you are working with objects that have been archived. For example when you specifically use NSKeyedUnarchiver to create these archived objects or when you need to add custom initialization code to objects that are coming from a xib file.
What is initWithCoder ios?
Returns an object initialized from data in a given unarchiver.
What is a nib in Swift?
A nib file is a special type of resource file that you use to store the user interfaces of iOS and Mac apps. A nib file is an Interface Builder document. iOS uses nibs as an implementation detail that supports storyboards, the iOS user interface design layout format.
What is awakeFromNib?
awakeFromNib is called when the associated nib file with a class is loaded . Any class that can own a nib can use it. viewDidLoad is used only by view controllers. It is usually called when loading from nib as well but it can also be called by a view created in memory (very rare circumstance.).
What is awakeFromNib Swift?
The nib-loading infrastructure sends an awakeFromNib message to each object recreated from a nib archive, but only after all the objects in the archive have been loaded and initialized. When an object receives an awakeFromNib message, it is guaranteed to have all its outlet and action connections already established.
What is NSCoder?
NSCoder declares the interface used by concrete subclasses to transfer objects and other values between memory and some other format. This capability provides the basis for archiving (storing objects and data on disk) and distribution (copying objects and data items between different processes or threads).
What is init coder Swift?
init(coder:) Returns an object initialized from data in a given unarchiver.
What is required init coder?
If you subclass from something and need to create a new init , or override an existing init , Xcode will create an error telling you need also need to include required init?(coder aDecoder: NSCoder) . The decoder, NSCoder is related to the the Interface Builder.
Which is better storyboard or Xib?
If you are a single developer, it is good to use storyboard because it consumes less time. If the team consists of many developers, use xib, otherwise, it is not easy to merge the modules/tasks.
What is UINib Swift?
A UINib object caches the contents of a nib file in memory, ready for unarchiving and instantiation. When your app needs to instantiate the contents of the nib file, it can do so without having to load the data from the nib file first, which improves performance.
What is the use of awakefromnib?
Typically, you implement awakeFromNib for objects that require additional set up that cannot be done at design time. For example, you might use this method to customize the default configuration of any controls to match user preferences or the values in other controls.
How do you initialize nscoding objects?
All objects that do not conform to the NSCoding protocol are initialized using their init method. After all objects have been instantiated and initialized, the nib-loading code reestablishes the outlet and action connections for all of those objects. It then calls the awakeFromNib method of the objects.
How does nib-loading work?
After all objects have been instantiated and initialized, the nib-loading code reestablishes the outlet and action connections for all of those objects. It then calls the awakeFromNib method of the objects.