iOS 8 : Cannot change the navigation bar at all of the ABPeoplePickerNavigationController

Question

我尝试将 ABPeoplePickerNavigationController 导航栏的颜色更改为我的应用程序颜色。但是没有发生任何变化。即使我试图隐藏它或至少更改状态栏色调颜色，也没有任何反应。为什么？

- (ABPeoplePickerNavigationController *)peoplePicker
{
    if(!_peoplePicker){
        _peoplePicker = [[ABPeoplePickerNavigationController alloc]init];
        _peoplePicker.peoplePickerDelegate = self;
        _peoplePicker.navigationBar.hidden = YES;
    }
    return _peoplePicker;
}

我懒惰地实例化我的导航 Controller 和其他方法调用，如关闭 View Controller 等。工作正常。

编辑:这是我当前的代码(用于赏金)。没有像这样发生颜色变化:

- (ABPeoplePickerNavigationController *)peoplePicker
{
    if(!_peoplePicker){
        _peoplePicker = [[ABPeoplePickerNavigationController alloc]init];
        _peoplePicker.peoplePickerDelegate = self;
        _peoplePicker.navigationBar.tintColor = [UIColor blackColor];
    }
    return _peoplePicker;
}

- (IBAction)addressBookButtonClicked:(id)sender {
    [self presentViewController:self.peoplePicker animated:YES completion:nil];
}

这在 iOS8 上不再有效了吗？

Answer 1

实际上，感谢上面的评论，我意识到外观代理应该像这样工作:

[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];

只需将其放入您从中启动 ABPeoplePickerView 的 View Controller 的 viewDidLoad 方法中。这也适用于 MFMailerView。我用来正确设置栏样式的代码是:

[[UINavigationBar appearance] setTintColor:[UIColor whiteColor]];
NSDictionary *attributes = [NSDictionary dictionaryWithObjectsAndKeys:[UIFont
                                                                       fontWithName:@"Helvetica Neue" size:12], NSFontAttributeName,
                            [UIColor whiteColor], NSForegroundColorAttributeName, nil];

[[UINavigationBar appearance] setTitleTextAttributes:attributes];