How can I change the buttons in a UINavigationBar when my UITableView is editing?

I'd like to make my buttons in the UINavigationC开发者_如何学编程ontroller change from "back" and "edit" to "done" and "add" when the user hits "edit" and then change back when the user hits "done".

Which method should my UITableViewController implement?

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I've figured this out, thanks to some Googling.

Here's my code:

- (void)setEditing:(BOOL)editing animated:(BOOL)animated {
[super setEditing:editing animated:animated];
if (editing){
    [self.navigationItem setHidesBackButton:editing animated:animated]; 
    UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addSlide)];
    [self.navigationItem setLeftBarButtonItem:addButton animated:YES];
    [addButton release];
}else{
    [self.navigationItem setLeftBarButtonItem:nil animated:YES];
    [self.navigationItem setHidesBackButton:editing animated:YES];  
} 
}