IBOutlet and IBAction get disabled when VC is linked to TabBarController

Question

I am trying to add a IBOutlet connection from a UIView to a ViewController.swift file and when I add the Tab Bar Controller to the storyboard the functionality to add the IBOutlet does not appear when I hover over the location to add the IBOutlet.

My tests: Test 1: I can add an IBOutlet to a UIview from a new project if I have not tried to add the Tab Bar Controller to the storyboard previously.

If I add the tab bar controller after I link an IBOulet to the storyboard, the IBOulet works and I can add additional IBOutlets.

Although I could use this to solve my problem, I would rather not start my project over.

Test 2: If I add the Tab Bar Controller first in a test project I can't add an IBOutlet to a UIView.

If I delete the Tab Bar Controller, I still can't add an IBOutlet to the UIView

Question: How do I get the functionality to add IBOutlets to a UIView when I have already added a Tab Bar Controller?

Is there something that is getting disabled that I can turn on when a Tab bar controller is added? Or is there something I can do programmatically to fix the problem?

The picture shows the UIview and the Tab Bar Controller. This scenario is the test 2 scenario where I added a Tab Bar Controller and then tried to link an IBOutled to the ViewController, which doesn't work.

I am using Xcode 10.1

Answer 1

进入身份检查器，并确保情节提要视图已连接到ViewController