POP到指定頁面

NSArray *vcs = [self.navigationController viewControllers];
        for (UIViewController *vc in vcs) {
            if([vc isKindOfClass:NSClassFromString(@"QHPiWorldHoldLandViewController")]){
                [self.navigationController popToViewController:vc animated:NO];
            }
        }
        
[[NSNotificationCenter defaultCenter] postNotificationName:@"LandTradeSuccessNotification" object:nil];