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我正在尝试向我的应用程序添加一些地址簿功能，但在第二次点击“添加到现有”按钮后，我收到此错误消息。

* 断言失败 -[ABPersonViewControllerHelper presentPeoplePickerNavigationControllerForAddToContacts:], /SourceCache/AddressBookUI_Sim/AddressBookUI-1118/ABPersonViewControllerHelper.m:2574 2011-10-24 20:41:11.960 locato[4576:11603] 由于未捕获的异常“NSInternalInconsistencyException”而终止应用程序，原因：“不应尝试显示多个添加到现有联系人选择器。” First throw call stack: (0x152e052 0x16bfd0a 0x14d6a78 0xefd2db 0x9d674 0x152fe72 0xd0eb8 0xc8141 0xb9e2f 0x60471d 0x604952 0xe8c86d 0x1502966 0x1502407 0x14657c0 0x1464db4 0x1464ccb 0x17eb879 0x17eb93e 0x574a9b 0x22d9 0x2255) terminate called throwing an exception

我有一个视图控制器和一个导航控制器，我在主视图控制器上显示地址簿的“模态”视图。（否则我没有得到滑动过渡，以及这个错误。）。我已经覆盖了这些方法：

 @implementation UIViewController (cancelButton)
- (void)peoplePickerNavigationControllerDidCancel:(ABPeoplePickerNavigationController *)peoplePicker;
{
    UIResponder *responder = self;
    while (responder && ![responder isKindOfClass:[mainViewController class]]) {
        responder = [responder nextResponder];
    }

    [(UIViewController *)responder dismissModalViewControllerAnimated:YES];

}
@end

@implementation UINavigationController (modal)
- (void) presentModalViewController:(UIViewController *)screen animated:(BOOL)animated 
{
    UIResponder *responder = self;
    while (responder && ![responder isKindOfClass:[mainViewController class]]) {
        responder = [responder nextResponder];
    }
    if ([screen isKindOfClass:[ABPeoplePickerNavigationController class]]) {
        ABPeoplePickerNavigationController *scr = screen;
        scr.peoplePickerDelegate = self;
       [scr release];
    }
    [(UIViewController *)responder presentModalViewController:screen animated:YES];
}

我希望能澄清我做错了什么！

谢谢，大卫

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1 回答 1

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在重试之前，您可以更改两件事：

  • 在两个while循环之后，检查响应者是否nil在关闭或呈现视图控制器之前

  • 你不能只分配screen.peoplePickerDelegate = self;而不使用这个scr吗？

于 2011-10-25T00:36:06.470 回答