Add transparent overlay as subview of `uiimageview` - ios

Question

I have a UITable with custom cells, each of which has a uiimage. When I highlight the cell, the image is not getting highlighted.
To highlight the cell's image, when I select a cell in my table, didHighlightRowAtIndexPath is called. In that method, I change the background color of the cell. I also call a method, indicatedImageViewPressed, which I got from this post, to add an overlay to the image of the cell.
- (BOOL)tableView:(UITableView *)tableView shouldHighlightRowAtIndexPath:(NSIndexPath *)indexPath {
return YES;
}
- (void)tableView:(UITableView *)tableView didHighlightRowAtIndexPath:(NSIndexPath *)indexPath {
// Add your Colour.
SpeciesCell* speciesCell = (SpeciesCell*)[tableView cellForRowAtIndexPath:indexPath];
speciesCell.contentView.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
speciesCell.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
speciesCell.speciesImage.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
[self indicatedImageViewPressed:speciesCell.imageView on:YES];
}
- (void)indicatedImageViewPressed:(UIImageView *)imageView on:(BOOL)on {
UIView *overlay = [imageView viewWithTag:1]; // See if already created
if (overlay == nil) {
overlay = [[UIView alloc] initWithFrame:imageView.frame];
overlay.tag = 1; // Mark view to find it next time
overlay.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000]; // Your color overlay goes here
[imageView addSubview:overlay];
[imageView bringSubviewToFront:overlay];
}
overlay.hidden = !on;
}
However, the cell's image does not change. No overlay is added. I tried bringSubviewToFront to make sure the overlay wasn't obscured by some other view, but it still doesn't work.
UPDATE: I am able to add a border width/color to speciesCell.speciesImage

Answer 1

speciesCell.contentView.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
speciesCell.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
speciesCell.speciesImage.backgroundColor = [UIColor colorWithWhite:0.17 alpha:1.000];
replace this with below code:
SpeciesCell.selectionStyle=UITableViewCellSelectionStyleGray;