iOS 10.0 UIRefreshControl not showing indicator

Question

I am using a UITableView Which has a Pull down to refresh function but the spinner for pull down to refresh is not showing up when I call the [self.refreshControl beginRefreshing]

The above code is called inside the viewDidLoad cause the table is loading some data initially. The spinner works fine if I perform a pull down to refresh after the initial refresh. The title shows up but not the spinner.

Cant seem to solve this problem. It works fine on iOS 9.3.2 but not on iOS 10.

Here is the code I am using currently.

- (void)viewDidLoad
{
    [super viewDidLoad];
    [self setupView];
    [self customSetup];
    self.refreshControl = [[UIRefreshControl alloc] init];
    self.refreshControl.attributedTitle = [[NSAttributedString alloc] initWithString:@"Updating Discounts..."];
    [self.refreshControl addTarget:self action:@selector(reloadDeals) forControlEvents:UIControlEventValueChanged];
    [self.refreshControl beginRefreshing];
    [self.tableView setContentOffset:CGPointMake(0, -self.refreshControl.frame.size.height) animated:YES];
}

Thanks for your help in advance

Answer 1

In iOS10, we should add the UIRefreshControl using setRefreshControl of UITableView or UICollectionView.

if([self.tableView respondsToSelector:@selector(setRefreshControl:)]) {
    [self.tableView setRefreshControl:self.refreshControl];
}
else {
    [self.tableView addSubview:self.refreshControl];
}
[self.refreshControl layoutIfNeeded];
[self.refreshControl beginRefreshing];

Answer 2

If your refresh indicator is not showing try enabling Bounce Vertically in Interface Builder for table view or scroll view.

Answer 3

I was only able to fix this by calling, from viewDidLoad():

refreshControl.layoutIfNeeded()

Answer 4

Delaying call to refresh in viewDidLoad worked for me:

    dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(0.1 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
        [self.refreshControl beginRefreshing];
});

Answer 5

You need to call [self.view layoutIfNeeded] to fix it in iOS 10. For my case it was enough to put the call to viewDidLoad (I was using storyboard in that project). For other cases viewWillAppear fits better.

- (void)viewDidLoad
  {
   [super viewDidLoad];
   [self.view layoutIfNeeded];
   ...

Answer 6

This is a known and reported bug in iOS 10.

Radar rdar://27468436

I'm not sure if there are any workarounds.