segue | Maya and Houdini geometry transfer

You ask:

How to properly allocate/initialize a weak variable?

You should:

1. Create your object with local variable:

Doing it the way you are doing it right now is a way to do it but I think it is the most challenging way to do it for several reasons:

1. You don't have much control and access to the implementation of the search controller animation within the navigation bar so getting the right coordinates might be a task

2. Even if you did manage to get the right coordinates, trying to synchronize your animation frames and timing to look in sync and seamless with the search animation on the nav bar will be tricky

I suggest the 2 following alternatives to what you are currently doing where you will get the news experience pretty much for free out of the box.

Option 1: Use a UITableViewController instead of a UIViewController

This is all the code using a UITableViewController and adding a UISearchController to the navigation bar.

Make sure the following points are valid for your performSegue to work in BankTransferViewController:

• The BankTransferViewController has a segue pointing to ConfirmViewController.
• The identifier in your performSegue(withIdentifier: yourIdentifier, sender: yourModel) is the exact same identifier as the segue in storyboard that is connecting the two view controllers.
• Since you are using it inside the viewModel.transferRequest.asObservable().subscribe(onNext: code, make sure you are emmiting a value to viewModel.transferRequest somewhere in the code. Otherwise, performSegue will never get called.
• Since you have this check if let bank = bankRequest{ before using performSegue, make sure the transferRequest value you emmit is not nil.

This sounds like a good job for a protocol/delegate pattern. What I would do is:

1. Create your unwind segue by connecting it to the viewcontroller not to the tableViewCell. Assign it an identifier you can use later

2. Create a protocol to which the MyViewController will conform

Here is what I think is happening.

There is segue happening from MainVC to SideMenuVC but there is no segue actually happening between SideMenuVC to MainVC in my opinion.

Happening is keyword because there is an EmbedSegue from MainVC to SideMenuVC but where is the segue from SideMenuVC to MainVC ? You did some connection in storyboard but nothing is happening in my opinion.

That is why in override func prepare is being called as planned in MainViewControllerDelegate and the delegate is getting set but it is not getting set in SideMenuViewController since override func prepare doesn't get called as no segue happens.

What you can do instead which might work is set both the delegates inside prepare in MainViewControllerDelegate

Yes, didSelectRowAt function is the best way to identify which cell or row is selected at the time.

• didSelectRowAt Function should be like below

First here is what I understand the goal is:

1. There is a UITableViewController called MyGroupsViewController which should show all the groups the user has selected
2. On tapping on + from the MyGroupsViewController, the user is taken to another UITableViewController called AllGroupsViewController which shows all the groups the user can join
3. On selecting a UITableViewCell from AllGroupsViewController, you will unwind back to MyGroupsViewController showing the groups added for the user

I will say you were quite close and I have just added some minor things which I hope will bring you close to your goal.

One way to pass data between UIViewControllers when using segue transitions is to override a function called prepare for segue (Read more about it in the Apple docs)

1

First change I will make is to add the override prepareForSegue to the end of the MyGroupsViewController class so that I can pass the groups array to the AllGroupsViewController

You can put it anywhere, I added it below your tableview editing function

use QuickType to get the model this is quite helpful. you will be getting the model easily(suggestion). I think you are using the wrong model.

if your Base model struct is correct it should be something like this

A alternative way to do that is to pass the row in the sender parameter