Can I use a UIRefreshControl in a UIScrollView?

Question

I have about 5 UIScrollView's already in my app which all load multiple .xib files. We now want to use a UIRefreshControl. They are built to be used with UITableViewControllers (per UIRefreshControl class reference). I do not want to re-do how all 5 UIScrollView work. I have already tried to use the UIRefreshControl in my UIScrollView's, and it works as expected except for a few things.

1. Just after the refresh image turns into the loader, the UIScrollView jumps down about 10 pixels, which only does not happen when I am very careful to drag the UIScrollview down very slowly.

2. When I scroll down and initiate the reload, then let go of the UIScrollView, the UIScrollView stays where I let it go. After it is finished reloading, the UIScrollView jumps up to the top with no animation.

Here is my code:

-(void)viewDidLoad
{
      UIRefreshControl *refreshControl = [[UIRefreshControl alloc] init];
      [refreshControl addTarget:self action:@selector(handleRefresh:) forControlEvents:UIControlEventValueChanged];
      [myScrollView addSubview:refreshControl];
}

-(void)handleRefresh:(UIRefreshControl *)refresh {
      // Reload my data
      [refresh endRefreshing];
}

Is there any way I can save a bunch of time and use a UIRefreshControl in a UIScrollView?

Thank You!!!

Answer 1

If and when you are fortunate enough to be supporting iOS 10+, you can now simply set the refreshControl of the UIScrollView. This works the same way as the previously existing refreshControl on UITableView.

Answer 2

Adding to above answers, in some situations you can't set the contentSize (using auto layout perhaps?) or the contentSize's height is less than or equal the height of the UIScrollView. In these cases, the UIRefreshControl won't work because the UIScrollView won't bounce.

To fix this set the property alwaysBounceVertical to TRUE.