如何将数据从UIViewController传递到嵌入在该UIViewController上的容器中的UITableViewController？

Question

I have an ios app written in swift and there I have a UIViewController with a container on half of the screen. This container has embedded UITableViewController and I want to display there some data that I'm fetching from my webservice. The problem is that to fetch the data from web service I need an unique id number that I store in the UIViewController . So how can I pass that data from one controller to another?

Answer 1

I have a project on github (written in Objective-C) that does exactly what you want. It has the horribly unoriginal name "test".

It has a master view controller with 2 child view controllers, each of which is a subclass of UITableViewController set up to manage static table views. (That detail doesn't really matter. It's the method of setting up connections between parent and child view controllers that addresses your question.)

The idea is that you set up your child view controller in a container view and link it in with an embed segue.

When you use an embed segue then prepareForSegue fires when the views are loaded. In your prepareForSegue you save a reference to your child view controller(s) if you need to call it/them, and make yourself each child's delegate if you need it to call you .

The code would be different in Swift but the concept is identical.