I use code to create the view (with subviews) for UIViewController
's this is how I do it:
override loadView()
class MYViewController: UIViewController {
var myView: MyView! { return self.view as MyView }
override func loadView() {
view = MyView()
}
}
and here is how I create my custom view:
class MyView: UIView {
// MARK: Initialization
override init (frame : CGRect) {
super.init(frame : frame)
addSubviews()
setupLayout()
}
convenience init () {
self.init(frame:CGRect.zero)
}
required init(coder aDecoder: NSCoder) {
fatalError("This class does not support NSCoding")
}
// MARK: Build View hierarchy
func addSubviews(){
// add subviews
}
func setupLayout(){
// Autolayout
}
// lazy load views
}
I do this for all my View Controllers and I am looking for more elegant way, because this process is repetitive, so is there any solution for make that generic for example, create a super abstract class, or create an extension for UIViewController and UIView, Protocols ? I am new for swift and I think that Swift can have a better elegant solution with it's modern patterns
Select UIViewController or any subclass of ViewController i.e tableviewController under Subclass of ▸ Make sure Also create xib file is checked ▸ Select language ▸ Next ▸ Select target ▸ Create the xib and file under your project directory. It'll automatically creates relationship between your class and xib.
They are separate classes: UIView is a class that represents the screen of the device of everything that is visible to the viewer, while UIViewController is a class that controls an instance of UIView, and handles all of the logic and code behind that view.
The UIView class is a concrete class that you can instantiate and use to display a fixed background color. You can also subclass it to draw more sophisticated content.
If you are wanting to create many different controllers with custom view classes my recommended solution would be along these lines:
First implement a custom view subclass the way you want to be able to use it, here I have used the one you had in your question. You can then subclass this anywhere you need it and just override the relevant methods.
class CustomView: UIView {
// MARK: Initialization
override init(frame: CGRect) {
super.init(frame: frame)
addSubviews()
setupLayout()
}
required init() {
super.init(frame: .zero)
addSubviews()
setupLayout()
}
required init(coder aDecoder: NSCoder) {
fatalError("This class does not support NSCoding")
}
// MARK: Build View hierarchy
func addSubviews(){
// add subviews
}
func setupLayout(){
// Autolayout
}
}
Then create a generic custom view controller that allows specification of a class as a generic parameter so that you can easily create a controller with a custom view class.
class CustomViewController<T: CustomView>: UIViewController {
var customView: T! { return view as! T }
override func loadView() {
view = T()
}
init() {
super.init(nibName: nil, bundle: nil)
}
}
Then if you wanted to define a new custom view and create a controller that uses it you can simply:
class AnotherCustomView: CustomView { /* Override methods */ }
...
let controller = CustomViewController<AnotherCustomView>()
Boom!
If you wanted you could even typealias this new controller type to make it even more elegant:
class AnotherCustomView: CustomView { /* Override methods */ }
...
typealias AnotherCustomViewController = CustomViewController<AnotherCustomView>
let controller = AnotherCustomViewController()
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With