UIScrollView scrollViewDidEndDragging and scrollViewDidEndDecelerating not working

Question

I have searched and found multiple posts that the recommended way to determine when a user stopped scrolling, and when a UIScrollView stopped moving is the following:

-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate {
   // Perform desired outcome here.
   NSLog(@"scrollViewDidEndDragging");
}

-(void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView {
   // Perform desired outcome here.
   NSLog(@"scrollViewDidEndDecelerating");
}

I have tried multiple ways, I can not get it to work.

Is there something obvious I am missing? Something with the delegate?

Answer 1

Make sure that you have all the following code inside your ViewController.

Under your ViewController.m add

@interface ScrollViewTestViewController ()<UIScrollViewDelegate>

Inside ViewDidLoad

- (void)viewDidLoad
{
[super viewDidLoad];

self.scrollView1.delegate=self;
self.scrollView2.delegate=self;
}


-(void)scrollViewDidEndDragging:(UIScrollView *)scrollView 
                         willDecelerate (BOOL)decelerate {
 // Perform desired outcome here.
 NSLog(@"scrollViewDidEndDragging");

 if(scrollView==self.scrollView1)
   //Do Something
 else if(scrollView==self.scrollView2)
   // Do Another thing
 }

Add a Screen Shot and a content size to simulate the scrolling behaviour.