ObjC class method is not called. GDB playing games? - ios

Question

I have a custom UITableViewController that I am trying to use to manage a UITableView. The flow of my code in the main UIViewController that contains the UITableView goes like below:
_messagesTableVC = [[AllMessagesTableViewController alloc] init];
_allMessageTableView.dataSource = _messagesTableVC;
_allMessageTableView.delegate = _messagesTableVC;
[_allMessageTableView reloadData];
The AllMessagesTableViewController custom UITableViewController class is initialized, it does any processing needed and I set the _allMessageTableView (the UITableView)'s delegates to my custom class.
When I run this code, the program acts as if the custom class is not there but no errors occur. It seems as that NO methods in the custom class are called, no init, no initWithCoder, nothing (I have set breakpoints and checked ;)).
As you can see in the screenshot below, I have set a breakpoint after a custom method refreshData in the custom class that I set to return YES. I assign the return value of refreshData to a local variable test.
In the debugger:
_messagesTableVC custom class does not appear to be nil.
test does not appear to exist.
Not shown here, but when I try to run [_messagesTableVC refreshData] in the debugger it says error: Execution was interrupted, reason: Attempted to dereference an invalid ObjC Object or send it an unrecognized selector.
The process has been returned to the state before expression evaluation.. So is _messagesTableVC actually nil??
What could be causing these problems or is GDB playing games? This is a Messages app extension in case that makes any difference. Thanks.
Update: Here is the code for the custom class init and refreshData
- (instancetype)init {
self = [super init];
if (!self)
return nil;
return self;
}
- (BOOL)refreshData {
return YES;
}
Update2: I created a blank working project and copy pasted the exact files into my original project (because it is an iMessage extension to a big iOS app). It turns out the Xcode is running the older build of the app even after I cleaned the project and changed the UITableView delegate to supply a different text.

Answer 1

I created a Messages Extension for the same project in the past and deleted the target while keeping the files in the project. When I re-added the Messages Extension to the project, Xcode kept running the older build of the app.
I fixed the issue with Xcode running an older version of the app by:
Clean All
Delete Messages Extension target from project
Backup existing Message Extension code to a directory outside the project. Then delete the Messages app group and directory from the project.
Delete the Messages Extension build scheme from project.
Delete project Derived Data directory.
Restart Xcode, create new Messages Extension target in project, and import saved code.