Question

I’m trying to implement UIRefreshControl in a UIViewController. I can’t use UITableViewController because the tableView is just one segment of my viewController.

In most cases this workaround works like charm. But sometimes (random occurrence) the app crashes with EXC_BAD_ACCESS code=1

- (void)viewDidLoad {
    [super viewDidLoad];

    UIRefreshControl * refCon = [[UIRefreshControl alloc] init];
    [refCon addTarget:self selector:@selector(refresh:) forControlEvent:UIControlEventValueChanged];
    [tableView addSubView:refCon];
}

- (void)refresh:(UIRefreshControl *)sender {
    [NSThred detachNewThreadSelector:@selector(doRefresh:) toTarget:self withObject:sender];
}

- (void)doRefresh:(UIRefreshControl *)sender {
    [self checkUpdate];
    [self loadData];
    [sender endRefreshing];
}

Answer 1

You’re invoking -endRefreshing on a background thread. Don’t do that.

And also, adding a UIRefreshControl directly as a subview of UITableView is not guaranteed to work. You should be using a UITableViewController.