Table view cell only masks correctly after scrolling off and then back on

Question

I\'m modifying a table view cell during a call to tableView:cellForIndexPath, but the modifications do not appear until the cell is scrolled off and then back on. I

Answer 1

Approach - 1 reload cell in viewWillAppear with delay mathod

func viewWillAppear(_ animated: Bool)
{ 
   super.viewWillAppear(animated) 
   DispatchQueue.main.asyncAfter(deadline: .now() + 0.10, execute: {
        self.tableView.reloadData() }) 
}

Approach - 2 Draw in GCD

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"TheCorrectCellIdentifier" forIndexPath:indexPath];

dispatch_async(dispatch_get_main_queue(), ^{

    UIBezierPath *maskPath = [UIBezierPath bezierPathWithRoundedRect:cell.bounds byRoundingCorners:UIRectCornerBottomLeft | UIRectCornerBottomRight                                                         cornerRadii:CGSizeMake(4., 4.)];
    CAShapeLayer *maskLayer = [CAShapeLayer layer];
    maskLayer.frame = cell.bounds;
    maskLayer.path = maskPath.CGPath;
    cell.layer.masksToBounds = YES;
    cell.layer.mask = maskLayer;

});
    return cell;
}