UiTableViewHeader - Dynamic button event handler - ios

Question

I need to add a uiButton to a static uitableview section header - I've made an attempt with the following -
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section {
// you can get the title you statically defined in the storyboard
NSString *sectionTitle = [self tableView:tableView titleForHeaderInSection:section];
CGRect frame = tableView.bounds;
// create and return a custom view
#define LABEL_PADDING 10.0f
HeaderLabelStyling *customLabel = [[HeaderLabelStyling alloc] initWithFrame:CGRectInset(frame, LABEL_PADDING, 0)] ;
UIButton *addButton = [[UIButton alloc] initWithFrame:CGRectMake(frame.size.width-60, 10, 50, 30)];
addButton.backgroundColor = [UIColor whiteColor];
addButton.titleLabel.textColor = [UIColor colorWithRed:240/255.0f green:118/255.0f blue:34/255.0f alpha:1.0f];
addButton.titleLabel.tintColor = [UIColor blackColor];
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 100, 30)];
title.text = #"iawn";
customLabel.text = sectionTitle;
customLabel.backgroundColor= [UIColor colorWithRed:143.0f/255.0f green:137.0f/255.0f blue:135.0f/255.0f alpha:1.0f];
customLabel.textColor = [UIColor colorWithRed:255/255.0f green:255/255.0f blue:255/255.0f alpha:1.0f];
[customLabel addSubview:addButton];
[addButton addSubview:title];
[addButton addTarget:self action:#selector(receiverButtonClicked:) forControlEvents:UIControlEventTouchDown];
return customLabel;
}
-(void)receiverButtonClicked:(id)sender{
NSLog(#"button clicked");
}
the above adds a button - but doesn't react to the click event - can anyone suggest how I can get this to work?

Answer 1

UILabel does not handles touches by default.
Add following line of code:
customLabel.userInteractionsEnabled = YES;
In order to display button only for third section you should add following condition:
if(section == 2){...}
So your -tableView:viewForHeaderInSection: should look as follows:
- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection (NSInteger)section {
if(section != 2) return nil;
// you can get the title you statically defined in the storyboard
NSString *sectionTitle = [self tableView:tableView titleForHeaderInSection:section];
CGRect frame = tableView.bounds;
// create and return a custom view
#define LABEL_PADDING 10.0f
HeaderLabelStyling *customLabel = [[HeaderLabelStyling alloc] initWithFrame:CGRectInset(frame, LABEL_PADDING, 0)] ;
UIButton *addButton = [[UIButton alloc] initWithFrame:CGRectMake(frame.size.width-60, 10, 50, 30)];
addButton.backgroundColor = [UIColor whiteColor];
addButton.titleLabel.textColor = [UIColor colorWithRed:240/255.0f green:118/255.0f blue:34/255.0f alpha:1.0f];
addButton.titleLabel.tintColor = [UIColor blackColor];
UILabel *title = [[UILabel alloc] initWithFrame:CGRectMake(10, 10, 100, 30)];
title.text = #"iawn";
customLabel.text = sectionTitle;
customLabel.backgroundColor= [UIColor colorWithRed:143.0f/255.0f green:137.0f/255.0f blue:135.0f/255.0f alpha:1.0f];
customLabel.userInteractionsEnabled = YES;
customLabel.textColor = [UIColor colorWithRed:255/255.0f green:255/255.0f blue:255/255.0f alpha:1.0f];
[customLabel addSubview:addButton];
[addButton addSubview:title];
[addButton addTarget:self action:#selector(receiverButtonClicked:) forControlEvents:UIControlEventTouchDown];
return customLabel;
}