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iOS - present和push

backend 2025/7/6 13:16:09

一.定义区别

pushViewController 导航栏控制器入栈的方式切换页面（pop可以返回任意一层）push一般用于同一业务不同界面之间的切换（也就是只能导航栏间的切换，从第二个导航栏到第三个导航栏）

- (void) pass {NSLog(@"pass to third");//第三个同样是导航栏，而且两个导航栏之间可以自由返回ThirdViewController *thirdVC = [[ThirdViewController alloc] init];[self.navigationController pushViewController:thirdVC animated:YES];
}

presentViewController模式切换的方式切换页面（dismiss只能逐级返回）present一般用于不同业务界面的切换。
若是由视图页面转到导航栏，要先建立一个导航栏。

//出来一个navigationSecondViewController *secondVC = [[SecondViewController alloc] init];UINavigationController *navSecondVC = [[UINavigationController alloc] initWithRootViewController:secondVC];navSecondVC.modalPresentationStyle = UIModalPresentationFullScreen;[self presentViewController:navSecondVC animated:YES completion:nil];

若是两个视图间，直接用present即可

- (void) press {NSLog(@"press 01");SecondViewController *secondVC = [[SecondViewController alloc] init];secondVC.modalPresentationStyle = UIModalPresentationFullScreen;[self presentViewController:secondVC animated:YES completion:nil];
}

二. 返回方法

push和pop对应
用UINavigationController的时候用pushViewController：animated返回之前的视图[[self navigationController] popViewControllerAnimated:YES]; push以后会在navigation的left bar自动添加back按钮，所以一般不用写返回，点back方法即可
有关pop，pop一般返回一级和左上角的back的作用是一样的，所以它的用处在于可以分级返回

	//返回上一视图[self.navigationController popViewControllerAnimated:YES];//返回根视图（to root）[self.navigationController popToRootViewControllerAnimated:YES];//返回任意视图(atindex后加返回的层数)[self.navigationController popToViewController:[self.navigationController.viewControllers objectAtIndex:0] animated:YES];

present和dismiss对应presentModalViewController:animated
[self presentModalViewController:controller animated:YES];
返回之前的视图 [self dismissModalViewControllerAnimated:YES];
dismiss在导航栏和页面中都可以使用，在页面中即返回上一级页面，在导航栏中使用的话是返回到所有导航栏前的一个页面，但是写法是相同的。

- (void) backDiss {NSLog(@"backdiss");[self dismissViewControllerAnimated:YES completion:nil];
}

三.使用区别

[self presentModalViewController:controller animated:YES];主语是UIVIewController，即单纯页面切换
[self.navigationController pushViewController:upViewController animated:YES];与[self.navigationController popViewControllerAnimated:YES];这两句时主语是navigationController，所以如果是在导航栏上实现页面的跳转使用push，除此之外的都是用present

代码

2020-10-04 23:15:46.330677+0800 present和push[79292:5066460] press 01 to
2020-10-04 23:16:19.915102+0800 present和push[79292:5066460] pass to third
2020-10-04 23:16:42.522594+0800 present和push[79292:5066460] backPop to Second
2020-10-04 23:16:47.412832+0800 present和push[79292:5066460] pass to third
2020-10-04 23:16:48.862871+0800 present和push[79292:5066460] backdiss to First（dissmiss因为上一级页面是第一个，两个导航栏是同一级页面）
2020-10-04 23:17:01.976698+0800 present和push[79292:5066460] press 01 to
2020-10-04 23:17:04.255234+0800 present和push[79292:5066460] pass to four
2020-10-04 23:17:12.925467+0800 present和push[79292:5066460] back2 ?->dissmiss second(因为上一级页面是第二个)
2020-10-04 23:18:01.000129+0800 present和push[79292:5071067] [ServicesDaemonManager] interruptionHandler is called. -[FontServicesDaemonManager connection]_block_invoke