Object Segue 上的 IOS 无法识别的选择器

Question

我正在制作一个 iOS 应用程序，但我试图将一个对象发送到另一个 View Controller ，但它抛出了这个错误

Blockquote-[UINavigationController setUserObject:]: unrecognized selector sent to instance 0x156aa330

这是我的代码:登录 View Controller .m这是用户，它已经为对象分配了名称、电子邮件和姓氏的值

#import "PerfilViewController.h"
#import "User.h"
@interface LogInViewController (){
    User *user;
}
@end
(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    if([[segue identifier] isEqualToString:@"loggedIn"]) {
user.name = self.nameText.text
user.lastname = self.lastNameText.text
        PerfilViewController *pvc = [segue destinationViewController];
        [pvc setUserObject: user];
    }
}

在我的目标 Controller 中，我在 viewDidLoad 上也分配了它

#import "PerfilViewController.h"
#import "User.h"
@interface PerfilViewController (){
    User *user;
}

@end

@implementation PerfilViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self setViewValues];
    [self.navigationItem setHidesBackButton:YES];
    user = [[User alloc] init];
}

#pragma mark - Segue
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
    // Get the new view controller using [segue destinationViewController].
    // Pass the selected object to the new view controller.
}

-(void)setUserObject:(User *)userToSet{
    user = userToSet;
}

Answer 1

问题是 destinationViewController 是一个 UINavigationViewController 所以 PerfilViewController 应该是它的 rootViewController

if([[segue identifier] isEqualToString:@"loggedIn"]) {
    UINavigationController *navigationController = [segue destinationViewController];
    PerfilViewController *pvc = navigationController.rootViewController;
    [pvc setUserObject: user];
}