UITableViewCell subview disappears when cell is selected

Cover Image for UITableViewCell subview disappears when cell is selected
Matheus Mello
Matheus Mello
published a few days ago. updated a few hours ago

UITableViewCell Subview Disappears When Cell is Selected šŸ˜±

Are you trying to create a color-chooser table view in your iOS app, where the user can select from multiple color options? Well, you've come to the right place! šŸŽØšŸ“±

šŸ” Problem: You have implemented a little square UIView, named colorThumb, on the left of the textLabel in each UITableViewCell. This colorThumb represents the actual color of the option. However, when you select a row, the colorThumb disappears during the fade-to-blue selection animation and only becomes visible again after the animation has ended. This results in an unattractive artifact. šŸ˜“

šŸ’” Solution: Don't worry, we've got you covered with an easy fix! šŸ› ļø

In your tableView:cellForRowAtIndexPath: method, you are correctly adding the colorThumb as a subview of the cell's contentView. However, it seems that the animation is affecting the visibility of the colorThumb. To prevent this, you can make use of the UIView method bringSubviewToFront: to ensure that the colorThumb remains visible during the selection animation.

Here's the updated code snippet with the fix:

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:RMProductAttributesCellID];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:RMProductAttributesCellID] autorelease];
        cell.indentationWidth = 44 - 8;

        UIView *colorThumb = [[[UIView alloc] initWithFrame:CGRectMake(8, 8, 28, 28)] autorelease];
        colorThumb.tag = RMProductAttributesCellColorThumbTag;
        colorThumb.hidden = YES;
        [cell.contentView addSubview:colorThumb];
    }

    // Your existing code...

    UIView *colorThumb = [cell viewWithTag:RMProductAttributesCellColorThumbTag];
    // Bring the colorThumb to the front
    [cell.contentView bringSubviewToFront:colorThumb];
    
    // Your existing code...

    return cell;
}

By bringing the colorThumb to the front, it will always remain visible, even during the selection animation. šŸŽ‰

šŸ”„ Engage and Share! Was this helpful in solving your issue? We'd love to hear from you! Share your thoughts in the comments below and let us know if you have any more questions. šŸ—£ļøšŸ¤”

Also, if you found this guide helpful, don't forget to share it with your fellow iOS developers who might come across a similar problem. šŸ“²šŸ¤

Happy coding! šŸ’»šŸš€


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