iphone - ABPeoplePickerNavigationController 隐藏取消按钮

Question

我正在对 ABPeoplePickerNavigationController 进行子类化，我想知道如何隐藏正确的工具栏项“Cancel”？

我一直在寻找，但找不到合适的解决方案。

谢谢!

Answer 1

使用 <UINavigationControllerDelegate>

在 ABPeoplePickerNavigationController alloc 之后委托(delegate)给自己。

peoplePicker.delegate = self;

我们需要覆盖 UINavigationController的委托(delegate)方法。

// Called when the navigation controller shows a new top view controller via a push, pop or setting of the view controller stack.

- (void)navigationController:(UINavigationController*)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    if([navigationController isKindOfClass:[ABPeoplePickerNavigationController class]])
        navigationController.topViewController.navigationItem.rightBarButtonItem = nil;
}