changing text of custom navigation bar item

changing text of custom navigation bar item

I am creating a custom UINavigationBar BarButtonItem as follows:
// Set up bar button items
UIButton *backButton = [[UIButton alloc] initWithFrame:CGRectMake(0,
0, 35.0f, 35.0f)];
[backButton setImage:[UIImage imageNamed:@"myimg.png"]
forState:UIControlStateNormal];
[backButton addTarget:self action:@selector(myselector)
forControlEvents:UIControlEventTouchUpInside];
self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc]
initWithCustomView:backButton];
This is working perfectly, but when I go to set the title of the UIButton
or BarButtonItem, it won't show up. Any suggestions?
Tried...
[backButton setTitle:@"Edit" forState:UIControlStateNormal];
[backButton setTitleColor:[UIColor whiteColor]
forState:UIControlStateNormal];
And...
self.navigationItem.leftBarButtonItem.title = @"Edit";
without luck.