Unable to change the text of UILabel - ios

Question

I have two views and the variable is loaded from my TestViewController which is a UITableViewController. Below i have the part of the code where i believe it will be useful.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *selected = [[_sectionsArray objectAtIndex:indexPath.row] objectForKey:#"Section"];
self.viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
self.viewController.detailSec = selected;
NSLog(#"%#",selected);
}
At my ViewController the following code is supposed to change my UILabel text to my variable
-(void)setDetailSec:(id)newDetailSec {
if (_detailSec != newDetailSec) {
[_detailSec release];
_detailSec = [newDetailSec retain];
[self configureView];
}
NSLog(#"Step 2 %#",_detailSec);
}
-(void)configureView {
if (self.detailSec) {
self.detailLabelChord.text = [_detailSec description];
NSLog(#"Step 3 %#", _detailSec);
}
As you can see I added NSLogs in order to check whether the if functions are called and whether the variable changes accordingly and it does! But my UILabel will not change!
2012-07-18 22:03:26.077 testapp[17332:11303] Step 3 CHS 21.3x3.2
2012-07-18 22:03:26.078 testapp[17332:11303] Step 2 CHS 21.3x3.2
2012-07-18 22:03:26.079 testapp[17332:11303] Step 1 CHS 21.3x3.2
Any ideas or suggestions? I don't know whether i can upload my project if you need more information.
Thank you in advance

Answer 1

Instead of doing this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *selected = [[_sectionsArray objectAtIndex:indexPath.row] objectForKey:#"Section"];
self.viewController = [[ViewController alloc] initWithNibName:#"ViewController" bundle:nil];
self.viewController.detailSec = selected;
NSLog(#"%#",selected);
}
do this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *selected = [[_sectionsArray objectAtIndex:indexPath.row] objectForKey:#"Section"];
self.viewController.detailSec = selected;
NSLog(#"%#",selected);
}
There is no need to initialize a new viewController from a nib every time you select a row. You already have viewController. When you make a new viewController you are calling setDetailSec on this new controller that hasn't been displayed. You are not calling it on the viewController that you can see with the UILabel.