UIRefreshControl Error - @dynamic?

Question

I have the UIRefreshControl coded as outlined in the video, but I am receiving a warning:
Auto property synthesis will not synthesize property 'refreshControl'; it will be implemented by its superclass, use @dynamic to acknowledge intention
under the warning are three exclamation marks inside gray 
1) In file included from /Users/XXX/Dropbox/XXX/InboxViewController.m:9:
-this shows a reference to 
```objective-c
import "InboxViewController.h"
```
inside inboxViewController.m
2)Proper declared here
-this shows a reference to 
objective-c
@property (nonatomic, strong, nullable) UIRefreshControl *refreshControl NS_AVAILABLE_IOS(6_0) __TVOS_PROHIBITED;

inside UITableViewController.h
3) Detached while default synthesizing properties in class implementation
-this shows a reference to
objective-c
@implementation InboxViewController

inside InboxViewController.m 
The warning is not crashing the app, but I would really like to clean it up.
I have been searching for the cause of this warning, but I can't really find any clear answers, and I am new to coding so I don't want to try and install new code from GitHub because the installation methods for some of the open source code is not clear cut. 
Can anyone help?

Michael Hulet · Accepted Answer

My guess is that the class that your InboxViewController is subclassing is a class that already has a property of type UIRefreshControl with the name refreshControl implemented. Is InboxViewController a subclass of UITableViewController? If either of those statements are true, all you have to do is delete your @property declaration of refreshControl.
Otherwise, in InboxViewController.m, you'll need to @synthesize the property. This has been automatic since Objective-C 2.0 (which came out in 2006), but you'll have to manually do it if you implement your own getter and setter method for a property. Manually doing it would look like this:
objective-c
@implementation InboxViewController
@synthesize refreshControl = _refreshControl;
//The rest of your code goes here
@end

Chris Stahl · Answer

Worked like a charm! Thank you!

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Chris Stahl

Chris Stahl

UIRefreshControl Error - @dynamic?

2 Answers

Michael Hulet

Michael Hulet

Chris Stahl

Chris Stahl