UINavigation,UiView,ModalView Controller之间的关系

it2022-05-05  214

如果当前是个VC,那么就太简单了,直接就可以push到下一个vc AddShopViewController *controller = [[AddShopViewController alloc] init]; controller.view.backgroundColor = [UIColor whiteColor];// 设置背景色为白色,消除残影 [self.navigationController pushViewController:controller animated:YES]; 有时候需要从modal view里pushviewcontroller,这当然是不行的,因为你没有NC,可以NSLog一下试试就知道了。 NSLog(@"ViewControllers before pushing: %@", self.navigationController.viewControllers); 这时你要加某个viewController的view在你的self.view上,你必须做的是:[self addChildViewController:xxx];或者addSubview。因为没有nav,如果想用nav来控制vc,一般是先有nav,然后把vc加入nav中,如果本身就是个vc那么直接 UINavigationController *navController = [[UINavigationController alloc]initWithRootViewController:self]; [self presentViewController:navController animated:YES completion:nil]; 这样你的modal就有一个nv,那么你就可以在这个modal里边用[self.navigationController pushViewController:controller animated:YES]; 完整的一个写法是这样的,Storyboard表述的很清楚 MyViewController *myViewController = [MyViewController alloc] init]; UINavigationController *navController = [UINavigationController alloc] initWithRootViewController:myViewController]; // Presuming a view controller is asking for the modal transition in the first place. [self presentViewController:navController animated:YES completion:nil];

转载于:https://www.cnblogs.com/buro79xxd/p/4298958.html


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