ABPeoplePickerNavigationController shouldContinueAfterSelectingPerson返回搜索结果

问题描述：

- (BOOL)peoplePickerNavigationController: 
(ABPeoplePickerNavigationController *)peoplePicker 
     shouldContinueAfterSelectingPerson:(ABRecordRef)person { 

     DefaultContactSelectViewController *view = [[self storyboard] instantiateViewControllerWithIdentifier:@"DefaultContactView"]; 
     view.recordID = recordID; 
     view.phones = phones; 
     view.emails = emails; 
     view.first_name = first_name; 
     view.last_name = last_name; 
     view.delegate = self; 

     [peoplePicker pushViewController:view animated:YES]; 
    return NO; 
}

在上面的代码示例中，我在选择联系人后推送自定义联系人视图控制器。问题是如果从搜索结果中选择联系人，然后用户单击回到联系人选择器，搜索结果将被清除。ABPeoplePickerNavigationController shouldContinueAfterSelectingPerson返回搜索结果

如果上面的代码返回YES，则不会发生此问题，但是它会推送默认的联系人视图，这不是我想要的。

如果您知道如何解决此问题，请提前致谢。

答

您应该编写一个自定义的PeoplePickerViewController，因为您永远无法控制Apple的默认控制器。

无论如何，你目前的问题，这里就是你需要做什么：

声明（根据如果您正在使用ARC或不使用合适的声明 - 我假设没有ARC）三个新属性

@property (nonatomic, assign) ABPeoplePickerNavigationController *peoplePicker; 
@property (nonatomic, assign) UIViewController *peoplePickerRootViewController; 
@property (nonatomic, copy) NSString *currentSearchString;

现在，当你显示人们选择器，添加这些行：

// save people picker when displaying 
self.peoplePicker = [[[ABPeoplePickerNavigationController alloc] init] autorelease]; 

// save it's top view controller 
self.peoplePickerRootViewController = self.peoplePicker.topViewController; 

// need to see when view controller is shown/hidden - viewWillAppear:/viewWillDisappear: won't work so don't bother with it. 
self.peoplePicker.delegate = self;

现在，我们可以节省搜索字符串只是推人视图之前：

- (BOOL)peoplePickerNavigationController:(ABPeoplePickerNavigationController *)peoplePicker shouldContinueAfterSelectingPerson:(ABRecordRef)person 
{ 
    self.currentSearchString = nil; 
    if ([self.peoplePickerRootViewController.searchDisplayController isActive]) 
    { 
     self.currentSearchString = self.peoplePickerRootViewController.searchDisplayController.searchBar.text; 
    } 
    // other stuff...

显然，在这个类中实现UINavigationControllerDelegate。当根视图回到视图中时，我们将强制显示搜索结果视图。下面是navigationController:willShowViewController:animated:

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated 
{ 
    if (navigationController == self.peoplePicker) 
    { 
     if (viewController == self.peoplePickerRootViewController) 
     { 
      if (self.currentSearchString) 
      { 
       [self.peoplePickerRootViewController.searchDisplayController setActive: YES]; 
       self.peoplePickerRootViewController.searchDisplayController.searchBar.text = self.currentSearchString; 
       [self.peoplePickerRootViewController.searchDisplayController.searchBar becomeFirstResponder]; 
      } 
      self.currentSearchString = nil; 
     } 
    } 
}

实施别忘了如果不使用ARC在dealloc中释放currentSearchString。

小警告：当ABPeoplePickerNavigationController尝试隐藏搜索结果视图时，您选择一个人时会有轻微闪烁。

这工作，谢谢。我也保存了搜索结果的滚动位置，并添加：[self.peoplePickerRootViewController.searchDisplayController.searchResultsTableView setContentOffset：scrollPosition animated：NO]; tonavigationController“willShowViewController”，但设置滚动似乎只能在“didShowViewController”中工作，这并不理想。任何想法为什么它不会在willShowViewController中设置滚动？ – 2013-05-07 02:41:34

答

好吧，我有一个类似的问题。我认为你正在使用ARC？

如果让我保存和整体ABRecordRef传递给我的其他视图，然后不得不使用保留人物对象：

CFRetain(m_MyContact object);

不要忘了，然后在对象上使用CFRelease（）当你完成。

ABPeoplePickerNavigationController shouldContinueAfterSelectingPerson返回搜索结果

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