iOS ABPeoplePickerNavigationController 導航欄顏色定製

基本設置

ABPeoplePickerNavigationController *picker = [[ABPeoplePickerNavigationController alloc] init];
picker.peoplePickerDelegate = self;
picker.topViewController.navigationController.navigationBar.tintColor = [UIColor colorWithRed:0.294 green:0.278 blue:0.247 alpha:1.0];
[self presentViewController:picker animated:YES completion:nil];

搜索欄顏色同步（iOS 7+）

搜索欄不在導航欄層級，需遞歸查找：

- (void)customizeSearchBar:(UINavigationController *)nc {
    for (UIView *view in nc.topViewController.view.subviews) {
        if ([view isKindOfClass:[UISearchBar class]]) {
            [(UISearchBar *)view setTintColor:[UIColor blackColor]];
            break;
        }
    }
}
// 在 present 後調用，或實現 UINavigationControllerDelegate

現代替代方案

ABPeoplePickerNavigationController 已棄用（iOS 9+），推薦使用 CNContactPickerViewController (ContactsUI 框架)，支持完整外觀定製且符合隱私權限機制。