Question

I inserted this gradient coce into my cellForRowAtIndexPath method, but it does weird things. when I continuesly scroll up and down the page, it paints over and over the cells, so page gets darker and darker. Shold I put this somewhere else?

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

static NSString *CellIdentifier = @"Cell";

UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil) {
    cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier] autorelease];
}

    //NSString *cellValue=[variable object ]
    // Configure the cell...

NSString *cellValue = [items objectAtIndex:indexPath.row];

if (indexPath.row==0){


    cell.textLabel.text=cellValue;
        //cell.textLabel.font=bold;
    cell.textLabel.font = [UIFont fontWithName:@"Georgia" size:11];

    cell.textLabel.font = [UIFont boldSystemFontOfSize:(CGFloat)16];


}
else {

    cell.textLabel.text=cellValue;
        //cell.textLabel.font=bold;
    cell.textLabel.font = [UIFont fontWithName:@"Georgia" size:14];

}

UIView *myBackView = [[UIView alloc] initWithFrame:cell.frame];
UIColor *color = [UIColor colorWithHue:0.56f  saturation:0.98 brightness:0.65 alpha:0.5];
UIColor *colorWhite = [UIColor colorWithHue:0.0f  saturation:0.0 brightness:0.95 alpha:0.5];
UIColor *colorBlack = [UIColor colorWithHue:1  saturation:1 brightness:0 alpha:0.2];


myBackView.backgroundColor=color;
UIColor *textColor = [UIColor colorWithHue:0.0f  saturation:0.0 brightness:0.95 alpha:1];

cell.selectedBackgroundView = myBackView;
cell.selectedTextColor=textColor;
[myBackView autorelease];


UIView *cellView = [[UIView alloc] initWithFrame:cell.frame];
                CAGradientLayer *gradient = [CAGradientLayer layer];
                gradient.frame = cellView.bounds;
                gradient.startPoint = CGPointMake(0, 0.5);
                gradient.endPoint = CGPointMake(1.0, 0.5);
                gradient.colors = [NSArray arrayWithObjects:(id)[colorBlack CGColor], (id)[colorWhite CGColor], nil];
                [cell.layer insertSublayer:gradient atIndex:0];

[cellView autorelease];


return cell;
}

Answer 1

Your code looks like isn’t complete, but you’re inserting a layer EVERY time the table view requests a cell.