Can't add UIBarButtonItem to toolbar

Can't add UIBarButtonItem to toolbar

After going through every single stackoverflow solution for this problem,
it's still frustratingly not working for me.
//UIBarButtonItem declaration
UIBarButtonItem* button1 = [[UIBarButtonItem alloc] initWithTitle:@"Button
Text"
style:UIBarButtonItemStyleBordered target:self action:@selector(myAction)];
//method 1
[self setToolbarItems:[NSArray arrayWithObjects: button1, nil] animated:YES];
//method 2
[self.navigationController.toolbar setItems:[NSArray
arrayWithObject:button1]];
//method 3
self.navigationController.toolbarItems = [NSArray arrayWithObject:button1];
//displaying toolbar
[self.navigationController setToolbarHidden:NO];
None of the above methods work for displaying a button on the toolbar -
all I get is a blank toolbar. Is there something obvious I'm missing here?