Objective-C - Scrollview Events - objective-c

Question

I found some answer that quite solve my questions, but seems that I'm missing some steps. I'm just trying to intercept the "ViewDidBlablabla" events of a ScrollView, so I created a custom UIScrollView class.
MyScrollView.m
#import "MyScrollView.h"
#implementation MyScrollView
- (id)initWithFrame:(CGRect)frame{
NSLog(#"initWithFrame");
self = [super initWithFrame:frame];
if (self) {
// Initialization code
}
return self;
}
-(void)scrollViewWillBeginDragging:(UIScrollView*)scrollView{
NSLog(#"scrollViewWillBeginDragging");
//scrollView.contentOffset
}
-(void)scrollViewDidScroll:(UIScrollView*)scrollView{
NSLog(#"scrollViewDidScroll");
}
-(void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{
NSLog(#"scrollViewDidEndScrollingAnimation");
}
#end
MyScrollView.h
#import <UIKit/UIKit.h>
#interface MyScrollView : UIScrollView <UIScrollViewDelegate>
#end
When I alloc my custom Scroll View I do get the console message "initWithFrame", but there's no way to get to the other events. What am I missing?
If you need some other pieces of code feel free to ask, but since I get to my custom "initWithFrame" method, I suppose that the error should be here.

Answer 1

Try setting your view as the delegate of itself:
if (self) {
// Initialization code
self.delegate = self;
}
Technically, you do not need to inherit UIScrollView to respond to scrolling events: it is sufficient to set the delegate to an implementation of <UIScrollViewDelegate>.
Also, the scrollViewDidEndScrollingAnimation: method has been gone for about two years, so it is not going to be called on modern iOS installations.