添加导致错误的 UIBarButtonItem 数组

Question

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[__NSArrayI isSystemItem]: unrecognized selector sent to instance 0x7fa5bbd726f0'

我已经关注了他的solution here，显然我没有任何缺陷。我正在做的是 - 在导航栏的右侧添加两个按钮（栏按钮）。

     UIBarButtonItem *notificationButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"Notification.png"]
                                                                                  style:UIBarButtonItemStylePlain target:self action:@selector(notificationAction)];
        UIBarButtonItem *searchButtonItem = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"search"]
                                                                                  style:UIBarButtonItemStylePlain target:self action:@selector(searchAction)];
        NSArray *arrNavigationButtons = [NSArray arrayWithObjects:notificationButtonItem,searchButtonItem, nil];
// warning here - Incompatible pointer type.
        self.navigationItem.rightBarButtonItem = arrNavigationButtons;

Answer 1

将最后一行更改为 rightBarButtonItems。注意末尾的 s。

Answer 2

self.navigationItem.rightBarButtonItem 是单个 ButtonItem 并且您正在将 NSArray 传递给它，这是无效调用。要传递 NavigationBarButtons，您需要调用正确的函数。如果你调用它，我认为你会收到不兼容指针类型的警告。只需将您的代码更改为：

self.navigationItem.rightBarButtonItems = arrNavigationButtons;

添加导致错误的 UIBarButtonItem 数组

Adding an array of UIBarButtonItem resulting in an Error

ios

objective-c

xcode

uinavigationcontroller

uibarbuttonitem