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POProblems when overriding scrollViewDidScroll, but not all the other methods of UIScrollViewDelegate
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  1. POProblems when overriding scrollViewDidScroll, but not all the other methods of UIScrollViewDelegate
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    copied!<p>Okay, so I did all the research for this issue but none of the existing solutions seem to address my problem, so here it is:</p> <ul> <li>I have a custom class that extends UIScrollView (and contains a UIView)</li> <li>I'd like to override the scrollViewDidScroll method from UIScrollViewDelegate (but not all the methods)</li> </ul> <p>I have already tried implementing the code from this issue: <a href="https://stackoverflow.com/questions/9978279/how-to-subclass-uiscrollview-and-make-the-delegate-property-private">How to subclass UIScrollView and make the delegate property private</a> but for some reason, it doesn't do anything (the custom method that was overridden never gets called). I also know that you don't have to implement all the methods from UIScrollViewDelegate if you create a custom delegate class that implements the protocol (as per <a href="https://stackoverflow.com/questions/6644630/iphone-do-i-need-to-implement-all-methods-for-uiscrollviewdelegate-or-any-dele">iPhone: Do I need to implement all methods for UIScrollViewDelegate (or any delegate)</a>) - but when I do this:</p> <p><strong>MyScrollViewDelegate.h</strong></p> <pre><code>@interface MyScrollViewDelegate: NSObject &lt;UIScrollViewDelegate&gt; -(void)scrollViewDidScroll:(UIScrollView *)scrollView; @end </code></pre> <p><strong>MyScrollViewDelegate.m</strong></p> <pre><code>@implementation MyScrollViewDelegate -(void)scrollViewDidScroll:(UIScrollView *)scrollView { NSLog(@"Custom scrollViewDidScroll called."); // -- some more custom code here -- // ... } @end </code></pre> <p><strong>In the subclass which extends UIScrollView</strong></p> <pre><code>// this scrollview is initiated by the NIB - (void)awakeFromNib { ... [self setDelegate:[[MyScrollViewDelegate alloc] init]]; } </code></pre> <p>But while it compiles and runs, when I try to scroll the scrollable view, it crashes with EXC_BAD_ACCESS and a cryptic "(lldb)" message in the debug console.</p> <p>So I'm bit at a loss here what to do.</p>
 

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