Inject View Controller which conforms to protocol

[romaHerman]

First Thanks for the great tool!!!

Here is my question:
I have a view controller which conforms to protocol "MyProtocol"
then I do let calendar = Inject.ViewControllerHost(CalendarViewController())
and try to pass this calendar to the SideMenu which expects VC of MyProtocol type
but calendar returns nil, when I do calendar as? MyProtocol

are there any workarounds of this ?

[johnno1962]

Where is MyProtocol defined? Is it in its own file or is it being injected as well? Or, you could also try setting the environment variable INJECTION_DYNAMIC_CAST in your scheme.

[romaHerman]

It's In it's own file
Will try with env var now and let you know
P.S. Thanks for such fast reply!

[romaHerman]

unfortunately it didn't help

[johnno1962]

Any chance of a small example project so I could look into what's going on?

[romaHerman]

Yes
Let me try to construct one

[romaHerman]

Here is a sample project
https://github.com/romaHerman/InjectTest
It has TestComponents xCodeProject and main xCodeProject
in SceneDelegate you can find test invocations of methods

it's similar to my setup in main project

[johnno1962]

Thanks for the example project. Injection aside, I can see that Inject.ViewControllerHost(CalendarViewController()) has type Inject._ViewControllerHost<CalendarViewController> not CalendarViewController which even though it is defined as a subclass of CalendarViewController does not acquire the conformance to TestProtocol. This seems to be a Swift thing. @krzysztofzablocki?

[johnno1962]

... Perhaps you need to do something like:

        if let vc = vc.instance as? TestProtocol {
            vc.testPrint()
        }

[romaHerman]

Thanks!

It does work in this case with vc.TestPrint()

but unfortunately it won't solve problem with passing this view to side menu

I have SideMenu which does navigationController.pushViewcontroller(<VC>)
and in order Inject to work in should push vc not vc.instance

problem is here

let calendar = Inject.ViewControllerHost(CalendarViewController())
sideMenu.view = calendar.instance

[johnno1962]

How do you mean "for inject to work"? If you save the file containing CalendarViewController, its methods will have been overridden for the next time they are called again.

[romaHerman]

here is what I'm trying to do

let calendar = Inject.ViewControllerHost(CalendarViewController())

viewControllers = [NewsViewController(), calendar.instance]
menu.viewcontrollers = viewControllers

inside menu viewControllers variable is declared like this
var viewControllers: [MenuProtocol] = []
and when I do
menu.selectedIndex = 1
inside it does following
navigationController.setViewcontrollers[viewControllers[selectedIndex]
so it sets calendar.instance not the calendar itself and I think this the problem why Inject doesn't hot reload it for me

[johnno1962]

It's possible the "Hosting" model Inject uses may not be for you in this instance. When you save the file containing NewsViewController it will have been "swizzled" correctly. Perhaps you just need a way to force it to redraw. Have you looked at creating an `@objc func injected()' method which should be called when the class is injected inside which you call viewDidLoad() or configure() or something to force the redraw so you can see the hot reload.

[romaHerman]

Thanks

I've overlooked this
How I can do that ?

[johnno1962]

create an @objc func injected() function in your class and see if it gets called. If it does, then you can do some stuff in it.

[romaHerman]

Maybe I will have to change SideMenu somehow to accept viewControllers
injected doesn't get called

[johnno1962]

I can zoom if you get stuck.

[romaHerman]

wow, thanks a lot!
if it works for you I'm ready
Tell me when you have time for that

[johnno1962]

Or TeamView. Send an invite/login to github at johnholdsworth.com

[johnno1962]

Actually, TeamView if you can thanks.

[romaHerman]

well
I've changed my setup and now I don't need to solve this problem but somehow InjectionIII just quit working

I can see
InjectionIII connected /Users//Documents/App.xcworkspace
💉 Watching files under /Users//Documents/App.xcworkspace
and when I open debug view hierarchy in Xcode I can sett that there is InjectionHostVC
also I gave access to all files and folders in mac's security

But when I change view and save nothing happens

I've tried reinstalling app and installing again, installing from Mac App Store and also restarting Mac

[johnno1962]

You seem to be watching the workspace file instead of watching the directory containing the workspace file. Use menu item "Open Project" to set it again.

[romaHerman]

Ohhh
I somehow thought that I should select workspace

It's working now
Thanks a lot!!!

BTW here is how I hacked thing that I can't add this view to menu directly because of protocol
added this line in viewWillAppear so view controller will re-instantiate itself and thus re-add itself with Injected host
I will have to remove this code once I'm done working with this VC but it solves the issue

if injectSelf {
            let eventVC = Inject.ViewControllerHost(EventsViewController())
            eventVC.injectSelf = false
            navigationController?.setViewControllers([eventVC], animated: false)
        }

[krzysztofzablocki]

for passing specific type only .instance can work, but in that scenario I'd recommend probably not commiting host changes, I usually just do host swap in separate commit I can easily delete at the end of feature work