iphone - 将 BarButtonItem 添加到 NavigationBar

Question

我通过 IB 添加了一个 NavigationBar，并试图以编程方式添加一个 UIBarButtonItem.....但它不起作用。

- (void)viewDidLoad { 

    UIBarButtonItem *addButton = [[UIBarButtonItem alloc] initWithTitle:@"Edit"style:UIBarButtonItemStyleBordered target:self action:@selector(EditTable:)];
    [self.navigationItem setLeftBarButtonItem:self.addButton];
    [super viewDidLoad];
}

Answer 1

尝试这样做:

self.navigationItem.leftBarButtonItem = [[UIBarButtonItem alloc] initWithTitle:@"Back" style:UIBarButtonItemStylePlain target:self action:@selector(backButtonTapped:)];