ABPeoplePickerNavigationController更改取消按钮文本为完成并仍然调用委托方法？

Question

如果文本本身无法更改且需要更换按钮，那么请解释如何制作委托方法

- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker

仍然可以从替换按钮调用吗？

非常感谢任何帮助。

Answer 1

经过一番摆弄后，这有效：

在对象UINavigationControllerDelegate文件中包含.h。将以下内容添加到.m文件中：

- (void) showAddressBook {
    ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
    picker.peoplePickerDelegate = self;
    // use delegate to change cancel text to done on picker that pops up
    picker.delegate = self;
    [self presentViewController:picker animated:true completion:nil];
}

// replace button now that controller is initialized
- (void)navigationController:(UINavigationController*)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated {
    if([navigationController isKindOfClass:[ABPeoplePickerNavigationController class]]) {

        UIBarButtonItem *obbi = navigationController.topViewController.navigationItem.rightBarButtonItem;

        UIBarButtonItem *bbi = [[UIBarButtonItem alloc] initWithTitle:@"Done" style:UIBarButtonItemStyleDone target:obbi.target action:obbi.action];
        navigationController.topViewController.navigationItem.rightBarButtonItem = bbi;
    }
}