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iphoneuiscrollviewsubclass

Detect scrolling in Subclass of UIScrollView

Good morning,

I've creates a Subclass of UIScrollView and I now want to know when the user is scrolling in my subclass. For that I implemented it like the following:

ImageScroller.h

@interface UIImageScroller : UIScrollView <UIScrollViewDelegate> {

ImageScroller.m (within the @implementation)

- (void)scrollViewDidScroll:(UIScrollView *)scrollView {

    NSLog(@"did scroll");
}

The problem is, that the method scrollViewDidScroll doesn't seem to get fired. Is there any possibility to get it to work?

I also tried to set the delegate to it self, but it doesn't work.

 - (id)initWithCoder:(NSCoder *)aDecoder {
    if ((self = [super initWithCoder:aDecoder])) {
        self.directionalLockEnabled = YES;
        [self setDelegate:self];
    }
    return self;
}

I added a ScrollView to my XIB-File and set the Class if it to my ImageScroller. Also I've set the Fileowner and I'm using the UIScrollViewDelegate in the .h-File of the ViewController as well as implementing the Method scrollViewDidScroll in the .m-file.

When I set the delegate of my ImageScroller in the code of the .m-file from the XIB like [imageScroller setDelegate:imageScroller] the scrollViewDidScroll is fired in my ImageScroller-Subclass, but the one in my ViewController isn't fired, but I need both.

Any solutions for that?

Thanks for your answers in advance.

Solution

  • I think you can try setting self.delegate = self; to receive events.