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POUpdating imageView on UIButton within UITableViewCell
 

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  1. POUpdating imageView on UIButton within UITableViewCell
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    <p>I have custom <code>UITableViewCells</code> (created in interface builder) which are used for a static <code>UITableView</code> which for the sake of argument I will call the <strong>AddUserTableViewController</strong> (i.e. I do not use autoreleased cells as I only have 5 rows).</p> <p>In the top cell (used for the <strong>user name</strong>) I have embedded a <code>UIButton</code> which I use to open an <code>UIActionSheet</code> which in turn allows an <code>UIImagePicker</code> to set an image on the UIButton (i.e. <code>[button.imageView.image = imageFromImagePicker]</code>). The button has a default image (added in IB) which says "add image".</p> <p>The image on the button is set without issue and remains in place even when I navigate to the detail page of any of the table cells with the exception of the <strong>user name</strong> cell which contains the button. When I select this cell the image dissapears and does not reappear once I navigate back to the <strong>AddUserTableViewController</strong> from the "add name" detail view. The "add image" default image, referred to above, is displayed.</p> <p>I have tried many strategies amongst which have been:</p> <p>1) using <code>[self.tableView reloadData]</code>, <code>[button.imageView setNeedsDisplay]</code>, <code>[self.view setNeedsDisplay]</code> in the <code>viewWillAppear</code> method;</p> <p>2) using the above methods in the <code>cellForRowAtIndexPath</code> method;</p> <p>3) using the above methods in the overriden <code>willDisplayCell:forRowAtIndexPath:</code> method;</p> <p>When I place debugging NSLog statements in the program I can see that the <code>button.imageView.image</code> property is still set to the image selected using the <code>UIImagePicker</code> but it is not displayed (the default image from the nib is displayed).</p> <p>As I mentioned above, this only happens if I navigate away from the <strong>AddUserTableViewController</strong> by selecting the <code>UITableViewCell</code> within which the <code>UIButton</code> is embedded. </p> <p>I am currently at a loss as to what to do and would be extremely grateful for any assistance that anyone could offer. I just need to find a way to update the image on the embedded UIButton in the above-mentioned circumstances.</p> <p>I've added the a section of the code from the <code>cellForRowAtIndexPath:</code> method just for illustrative purposes -</p> <pre><code>//populates the personal info section if (section == kPersonalInfoAddSection) { //Covers the add image button and the name adding field if (row == kNameRow) { UILabel *nameLabel = (UILabel *)[nameCell viewWithTag:kMainTextTag]; UILabel *reqLabel = (UILabel *) [nameCell viewWithTag:kSubTextTag]; //UIButton *imageButton = (UIButton *) [nameCell viewWithTag:kImageTag]; if (mainUser.imagePath != nil) { UIImage *img = [UIImage imageWithContentsOfFile:mainUserImagePath]; imageButton.imageView.image = img; [imageButton.imageView setNeedsDisplay]; //[imageButton setNeedsDisplay]; //[nameCell setNeedsDisplay]; NSLog(@"************************** Added the BESPOKE image (%@)to the image button", img); } else { NSLog(@"************************** Added the DEFAULT image (%@)to the image button", addUserImage); imageButton.imageView.image = addUserImage; } UIColor *blackText = [[UIColor alloc] initWithWhite:0 alpha:1]; NSString *firstName; if (mainUser.firstName){ nameLabel.textColor = blackText; firstName = mainUser.firstName; } else { nameLabel.textColor = reqLabel.textColor; firstName = NAME_STRING; } NSString *lastName = (mainUser.lastName)? mainUser.lastName : EMPTY_STRING; NSString *name = [[NSString alloc] initWithFormat:@"%@ %@", firstName, lastName]; nameLabel.text = name; reqLabel.text = REQUIRED_STRING; [blackText release]; return nameCell; } </code></pre>
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    1. CODid you ever figure this out? I am having the same issue as well.
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    2. COI never did. I just used a UIImageView with an UIButton behind it to provide the framing effect. I hope that this helps.
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