Question

I have a UITableView loading some tweets, all works nicely but when I populate the table it doesn’t enter to the CellForRow method til I touch the table view…. does somebody know how to solve this?

 tab = [[UITableView alloc] initWithFrame:CGRectMake(10, 300, 400, 200) style:UITableViewStylePlain];
 tab.dataSource = self;
 tab.delegate = self;

then…

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSLog(@"entra a cellula");
    Tweet *t = [tweets objectAtIndex:indexPath.row];

    static NSString *MyIdentifier = @"MyIdentifier";

    // Try to retrieve from the table view a now-unused cell with the given identifier.
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:MyIdentifier];

    // If no cell is available, create a new one using the given identifier.
    if (cell == nil) {
        // Use the default cell style.
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:MyIdentifier];
    }



    cell.textLabel.text = t.screenName;
    cell.detailTextLabel.text = t.text;
    cell.imageView.image = t.profileImage;
return cell;

}

Answer 1

Best guess based on what we know is that you aren’t adding the table as a subview on the main thread. This means that redrawing doesn’t occur until you scroll. Try wrapping the addsubview call in a GCD call like so:

dispatch_async(dispatch_get_main_queue(), ^() {
    [self addSubview:tab];
});