DidSelectedRow for Setting Title - ios

Question

So, I have one ViewController that has a TableView populate with an Array (_vinhoArray) and another TableViewController that opens when a user taps a row in this first ViewController.
What I want is set the title of second View ( TableViewController) for the name of row selected.
In this first one I have this code.
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *selectedRow = [_vinhoArray objectAtIndex:indexPath.row];
// SubTable is the name of Second View
SubTable *subTable = [[SubTable alloc] init];
subTable.titleView = selectedRow;
}
In the second view a have a property set
#property (nonatomic, strong) NSString *titleView;
In the -(void)viewDidLoad I have this code
self.title = titleView;
But nothing shows in the title of the Second View (TableViewController)
Thats it! Please Help

Answer 1

If you simply want to set the title on the navigation bar of the view controller you are presenting, there's no need to create a property for it. You probably want to do something like this:
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
NSString *titleString = [_vinhoArray objectAtIndex:indexPath.row];
// SubTable is the name of Second View
SubTable *subTable = [[SubTable alloc] init];
subTable.title = titleString;
[self.navigationController pushViewController:subTable animated:YES];
}
Above seems to be the easiest and most straight-forward way to implement this. On a side note, it's pretty unconventional to name a variable type like an NSString with some other class type, like titleView or titleLabel. Something similar to "titleString", like I used, would be more appropriate and less confusing for anyone reading your code.

Answer 2

What is probably happening is that the view is loading before you set the titleView property. As you are setting the title statically in viewDidLoad, no changes are being shown. You can confirm this by putting in a couple of breakpoints and seeing the order of the calls being made.
One solution to this is to use a more dynamic method of setting the table. Create a custom accessor in your second view controller:
- (void)setTitleView:(NSString *)title {
_titleView = title; // This sets the backing iVar
self.title = titleView;
}
Now, whenever you set the property, then the change is applied, even if it is after the view has loaded.
You don't need to declare the method or the iVar, these are set up by autosynthesis; you are merely overriding the default implementation of the property setter.

Answer 3

Are you certain that setting .title property is what you want? If you're in a UINavigationController you may actually want
self.navigationItem.title
instead. Setting the title is independent of source of the title, so I'd work on getting that second View Controller to display a static title you choose, and only then turn to the task of passing a title dynamically from the first VC. Your issue is likely in setting the title string, not in how you pass that string around from VC 1 to VC 2.
As obvious as it seems, the .title property of a UIViewController doesn't always actually cause a title string to be displayed… the rules for when that property is actually used get tricky.

Answer 4

I am assuming that "titleView" is nothing but of type NSString.
In your SecondViewController.h, synthesize your titleView property.
And NSLog it in your SecondViewController before assigning it to self.title just to check that it's getting some value we tried to assign.
Hope this helps!