CODEWITHSUNDEEP
iphoneobjective-ccocoa-touchinterface-builder
Willster
Willster

Reputation: 2586

User interaction disabled for view but enabled for subviews (UIButtons)

I have a view which contains several UIButtons which overlays a UIScrollView. I want to prevent user interaction on the overlay view but not on the UIButtons that are contained within that view.

The reason why I am grouping these views into a single view is such that I can apply an alpha change to all the buttons in the view by just changing a single property. I have just noticed the IBOutletCollection in IOS 4.0 but I need to also target IOS 3.0.

Is there a more simple way to achieve this than overriding the following UIView method?

- (BOOL)pointInside:(CGPoint)point withEvent:(UIEvent *)event;

Upvotes: 6

Views: 5541

Answers (3)

atulkhatri
atulkhatri

Reputation: 11333

Please have a look at this answer: https://stackoverflow.com/a/13414182/2082569

According to this you need to override this method in your custom UIView:

- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event {
    UIView *subview = [super hitTest:point withEvent:event];
    return subview == self.button ? subview : nil;
}

Upvotes: 3

virtplay
virtplay

Reputation: 578

disable only the scroll view using scrollView.scrollEnabled = FALSE; when you want the user to allow usage of button. Enable again when you want the user to scroll the view using scrollView.scrollEnabled = TRUE;

Note : you don't need to disable the user interaction of scroll view.

Upvotes: -1

Kenny Wyland
Kenny Wyland

Reputation: 21870

Unfortunately if you disable user interaction with a view then user interactions with all subviews are also disabled. While not ideal, you'll just need to make IBOutlets for each of the buttons and adjust them accordingly. To avoid having to write to much additional code in the future, in your viewDidLoad you can create an NSArray and toss each of the buttons into it. Then every time you want to change one of the attributes on all of those buttons, you can just loop over the array and change them. That way if you add another button to the group you only need to update the array and the rest of the changes will automatically propagate.

Upvotes: 3

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