相关疑难解决方法(0)

如何更改UIBarButtonItem的标题？我有以下代码,在我的UINavigationBar上按下"编辑"按钮时调用该代码.

-(void)editButtonSelected:(id)sender {
    NSLog(@"edit button selected!");
    if(editing) {
        NSLog(@"notediting");
        [super setEditing:NO animated:NO];
        [tableView setEditing:NO animated:NO];
        [tableView reloadData];
        [rightButtonItem setTitle:@"Edit"];
        [rightButtonItem setStyle:UIBarButtonItemStylePlain];
        editing = false;
    }
    else {
        NSLog(@"editing");
        [super setEditing:YES animated:YES];
        [tableView setEditing:YES animated:YES];
        [tableView reloadData];
        [rightButtonItem setTitle:@"Done"];
        [rightButtonItem setStyle:UIBarButtonItemStyleDone];
        editing = true;
    }
}

"编辑"按钮正在改变颜色(因此设置样式的行正在工作),但是设置按钮标题的行不起作用.