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PONeed to take Action on UIButton press that is in nested TableViews with custom UITableViewCell
 

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  1. PONeed to take Action on UIButton press that is in nested TableViews with custom UITableViewCell
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    <p>I have a UITableViewController (called Details). In that tableView on row 1 I have another UITableView which I rotate horizontally. Each cell in that tableview is a custom UITableViewCell (called DetailsHorizontalPhotoCell) which displays a button with an image. I am having a hard time taking action when the photos (the buttons) are pressed. </p> <p>Calling an IBAction is not a problem for me if I have that IBAction code in the DetailsHorizontalPhotoCell.h/.m files however I need to present a modal VC upon the button presses. That code does not belong and/or work in a tableViewCell - it needs to be in the controller (Details). That being said I can't figure out how to code it. This is what I have so far.</p> <p>Details.m:</p> <pre><code>if( (indexPath.row == 1) &amp;&amp; ([detailsObject_.photo count] &gt; 0) ) { NSLog(@"** In Photo Section **"); static NSString *CellIdentifier = @"cellPhoto"; DetailsHorizontalPhotoCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; if(cell == nil) { cell = [[DetailsHorizontalPhotoCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier]; } CGAffineTransform rotateTable = CGAffineTransformMakeRotation(-M_PI_2); cell.horizontalTableView.transform = rotateTable; NSArray *photoArray = [[NSArray alloc] initWithArray:detailsObject_.photo]; cell.horizontalTableView.frame = CGRectMake(0, 0, cell.horizontalTableView.frame.size.width, cell.horizontalTableView.frame.size.height); cell.contentArray = [NSArray arrayWithArray:photoArray]; cell.horizontalTableView.allowsSelection = YES; return cell; } </code></pre> <p>DetailsHorizontalPhotoCell.m:</p> <pre><code>@synthesize horizontalTableView = horizontalTableView_; @synthesize contentArray = contentArray_; @synthesize imageButton = imageButton_; // *** a bunch of code which is not relevant to this question snipped out here... - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *CellIdentifier = @"Cell"; UITableViewCell *cell = [self.horizontalTableView dequeueReusableCellWithIdentifier:CellIdentifier]; if(cell == nil) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier]; [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; } for(UIButton *button in cell.subviews) { [button removeFromSuperview]; } // create image and button UIImage *image = [UIImage imageNamed:[contentArray_ objectAtIndex:indexPath.row]]; self.imageButton = [[UIButton alloc] initWithFrame:CGRectMake(5, 5, 240, 240)]; // setup the button [imageButton_ setImage:image forState:UIControlStateNormal]; imageButton_.layer.masksToBounds = YES; imageButton_.layer.cornerRadius = 5.0; imageButton_.layer.borderWidth = 1.0; imageButton_.layer.borderColor = [[UIColor grayColor] CGColor]; // rotate the button CGAffineTransform rotateButton = CGAffineTransformMakeRotation(M_PI_2); imageButton_.transform = rotateButton; // this detects the click of each photo and triggers the IBAction [imageButton_ addTarget:self action:@selector(photoButton:) forControlEvents:UIControlEventTouchUpInside]; /// do more stuff yada yada yada... &lt;snipped code&gt; and return cell; } // the Action (which I know should NOT be in this UITableViewCell class) - (IBAction)photoButton:(id)sender { CGPoint hitPoint = [sender convertPoint:CGPointZero toView:self.horizontalTableView]; NSIndexPath *hitIndex = [self.horizontalTableView indexPathForRowAtPoint:hitPoint]; NSLog(@"Image clicked, index: %d", hitIndex.row); // presentModalViewController here - but you can't do that from here! Must be in the Details controller } </code></pre> <p>So, knowing that I can't perform a presentModalViewController from the Cell I try to move that code into the Details class (below)</p> <p>Add the IBAction to Details.h and .m</p> <pre><code>- (IBAction)photoButton:(id)sender { DetailsHorizontalPhotoCell *cell = [[DetailsHorizontalPhotoCell alloc] init]; CGPoint hitPoint = [sender convertPoint:CGPointZero toView:cell.horizontalTableView]; NSIndexPath *hitIndex = [cell.horizontalTableView indexPathForRowAtPoint:hitPoint]; NSLog(@"Image clicked, index: %d", hitIndex.row); } </code></pre> <p>And add the click event to the photo button in the Details cellForRowAtIndexPath method.</p> <pre><code>// Blaaahh! Tried a million combinations of something like below but cannot get it to work... //[cell.imageButton addTarget:cell.horizontalTableView action:@selector(photoButton:) forControlEvents:UIControlEventTouchUpInside]; </code></pre> <p>PS - I'm using IOS5, Xcode 4.2 w/ ARC</p>
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