Ios 如何更改ABPeoplePickerNavigationController backButton的颜色？

我使用

ABPeoplePickerNavigationController

获取所有联系人。我使用

[[uibarbuttonim appearancewhen containedin:[ABPeoplePickerNavigationController class]，nil]setTintColor:[UIColor whiteColor]]更改了tintColor

，但当它按下时，backItem将尝试执行以下操作

- (IBAction)btnopencontact {

    [[UINavigationBar appearanceWhenContainedIn:[ABPeoplePickerNavigationController class], nil] setBarTintColor:[UIColor redColor]];
    ABPeoplePickerNavigationController *objPeoplePicker = [[ABPeoplePickerNavigationController alloc] init];
    [objPeoplePicker setPeoplePickerDelegate:self];
    [self presentViewController:objPeoplePicker animated:YES completion:nil];
}

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Appdelegate.m ApplicationIDFinishLaunch方法集[[UINavigationBar外观]setTintColor:[UIColor whiteColor]]@Muhammaddnan我有一个自定义MyTabController，它使用此方法更改了颜色，我只想更改

ABPeoplePickerNavigationController

及其子卷。请尝试使用更新的

code

，我在ios7和ios8中进行了检查。是的，它可以工作。但是我怎样才能改变气压表的颜色呢？

- (IBAction)btnopencontact {

    [[UINavigationBar appearanceWhenContainedIn:[ABPeoplePickerNavigationController class], nil] setBarTintColor:[UIColor redColor]];
    ABPeoplePickerNavigationController *objPeoplePicker = [[ABPeoplePickerNavigationController alloc] init];
    [objPeoplePicker setPeoplePickerDelegate:self];
    [self presentViewController:objPeoplePicker animated:YES completion:nil];
}