Extend UIViewController's UI down to children UIViewControllers

Question

I have a base view controller BaseUIViewController which is extended from UIViewController. I have two UIButtons at the bottom of this ViewController. Basically I want these two buttons on every UIViewController at the same place through out my app. When I extend BaseUIViewController, I don't see them in the children view controllers. I have given IBOutlets to the buttons too! I am new to programming. Please help. Isn't this way inheritance work?

score 1 · Answer 1 · edited May 23 '17 at 12:03

1

You can create a UIViewControllerContainment. This Stackoverflow's post explains it in detail how you can create it and make it work. Similalry, also have a look at this Stackoverflow's post. Here it is done using childViewControllers.

edited May 23 '17 at 12:03

Community

1
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answered Sep 15 '15 at 05:41

Munahil

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score 0 · Answer 2 · answered Sep 15 '15 at 05:43

Make sure you put these button properties in @interface instead of @implement, only properties in @interface can see in subclasses. Here is example:

@interface BaseUIViewController
    @property (nonatomic, weak) IBOutlet UIButton *button1;
    @property (nonatomic, weak) IBOutlet UIButton *button2;
@end

score 0 · Answer 3 · answered Sep 15 '15 at 08:54

Both the ways which MUNAHIL answered above, are the best ones I believe. In case you want to achieve this in a more basic way, you can do as below.

Add the two UIButtons in the BaseUIViewController (either programmatically in viewDidLoad or in storyboard). In case you need, you may like to add a UIToolBar first and then the buttons on top of it.
Make other view controllers a subclass of BaseUIViewController.
```
@interface SomeViewController: BaseUIViewController
```
Now, all your view controllers will have the two buttons by default.

Extend UIViewController's UI down to children UIViewControllers

3 Answers3