ios SWRevealViewController - 手动切换到另一个视图？

SWRevealViewController - manually switch to another view?

提问by Roman

I have a sidebar menu, made with SWRevealViewController.

我有一个侧边栏菜单，用 SWRevealViewController 制作。

One of menu elements in sidebar is "sign-in". It opens sign-in view (via custom SWRevealViewController segue).

侧边栏中的菜单元素之一是“登录”。它打开登录视图（通过自定义 SWRevealViewController segue）。

I want to programmatically switch to another view after user successfully signs in. How do I do that?

我想在用户成功登录后以编程方式切换到另一个视图。我该怎么做？

UPDATE, my code:

更新，我的代码：

ViewController *vc = [[ViewController alloc] init]; // this is main front ViewController
SWRevealViewController *revealController = self.revealViewController;
[revealController setFrontViewController:vc animated:YES];

After this I get just empty screen. What am I doing wrong? I feel that this is wrong:

在此之后，我只是空屏幕。我究竟做错了什么？我觉得这是错误的：

ViewController *vc = [[ViewController alloc] init];

so what is correct way to access already loaded view controller? (it loads at app start by SWRevealViewController as front controller)

那么访问已加载的视图控制器的正确方法是什么？（它在应用程序启动时由 SWRevealViewController 作为前端控制器加载）

采纳答案by vburojevic

Use - (void)setFrontViewController:(UIViewController *)frontViewController animated:(BOOL)animated;method

使用 - (void)setFrontViewController:(UIViewController *)frontViewController animated:(BOOL)animated;方法

SWRevealController has it's own property you can access from any UIViewController:

SWRevealController 有它自己的属性，你可以从任何 UIViewController 访问：

SWRevealViewController *revealController = self.revealViewController;

You can check example projects at it's GitHub repository: https://github.com/John-Lluch/SWRevealViewController

您可以在其 GitHub 存储库中查看示例项目：https: //github.com/John-Lluch/SWRevealViewController

回答by

Try this:

尝试这个：

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
SecondViewController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"SecondViewController"];

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:rootViewController];
[navController setViewControllers: @[rootViewController] animated: YES];

[self.revealViewController setFrontViewController:navController];
[self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];

work for me :-)

为我工作:-)

回答by Marc Glassman

Here is a Swift version of the setFrontViewController solution:

这是 setFrontViewController 解决方案的 Swift 版本：

if let secondViewController = self.storyboard?.instantiateViewControllerWithIdentifier("SecondViewControllerStoryBoardID") as? SecondViewController {
  let navController = UINavigationController(rootViewController: secondViewController)
  navController.setViewControllers([secondViewController], animated:true)
  self.revealViewController().setFrontViewController(navController, animated: true)
} 

回答by benaneesh

Try this:

尝试这个：

ViewController *vc = [[ViewController alloc] init]; // this is main front ViewController
UINavigationController* navController = (UINavigationController*)self.revealViewController.frontViewController;
[navController setViewControllers: @[vc] animated: YES];
// [navController pushViewController:vc animated:YES]; // use this if you want to stack the views
[self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];

回答by Brian

There is a new API - (void)pushFrontViewController:(UIViewController *)frontViewController animated:(BOOL)animated;

有一个新的 API - (void)pushFrontViewController:(UIViewController *)frontViewController animated:(BOOL)animated;

As far as I know, this is the most elegant way that animates correctly to switch between view controllers manually.

据我所知，这是正确动画以手动在视图控制器之间切换的最优雅的方式。

// get the view controller you want to push to properly.
// in this case, I get it from Main.storyboard
UIStoryboard *sb = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
UIViewController * vc = [sb instantiateViewControllerWithIdentifier:@"SignInViewController"];

UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController:vc];

[navController setViewControllers: @[vc] animated:NO];
[self.revealViewController pushFrontViewController:navController animated:YES];

If you are in the target vc that doesn't import SWRevealViewControllerand want to push back:

如果您在未导入的目标 vc 中SWRevealViewController并想要推回：

// get your vc properly
[self.navigationController setViewControllers:@[vc] animated:YES];

Please notice that [self.navigationController showViewController:vc sender:self];has the same result, but don't use this since this creates a new view controller on the navigation stack, which is basically meaningless while using SWRevealViewController.

请注意它[self.navigationController showViewController:vc sender:self];具有相同的结果，但不要使用它，因为这会在导航堆栈上创建一个新的视图控制器，这在使用SWRevealViewController.

回答by Evana

This one works for me perfectly

这个非常适合我

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
ViewController *rootViewController = [storyboard instantiateViewControllerWithIdentifier:@"ViewController"];

UINavigationController *navController = [storyboard instantiateViewControllerWithIdentifier:@"NavController"];
[navController setViewControllers: @[rootViewController] animated: YES];

[self.revealViewController setFrontViewController:navController];
[self.revealViewController setFrontViewPosition: FrontViewPositionLeft animated: YES];

回答by teapeng

@Evana has a good answer, however for my case which passing parameter to the destViewController, I need to improve it as below. By following her example exactly, I noticed the DestViewController viewDidLoad was called twice. First with 0 on the 'selectedId', only the second call did the 'selectedId' is receiving my tag value.

@Evana 有一个很好的答案，但是对于我将参数传递给 destViewController 的情况，我需要如下改进它。通过严格按照她的示例，我注意到 DestViewController viewDidLoad 被调用了两次。首先在“selectedId”上为 0，只有第二次调用时“selectedId”才接收我的标签值。

Thus, in order for a cleaner navigation, the DestViewController must be obtained from the navController, so that there is no redundant call.

因此，为了更清晰的导航，必须从 navController 获取 DestViewController，这样就没有多余的调用。

UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];

UINavigationController *navController = [storyboard instantiateViewControllerWithIdentifier:@"DestNavController"];

DestViewController *destViewController = (DestViewController*)[[navController viewControllers] objectAtIndex:0];

destViewController.selectedId = ((UIButton*)sender).tag;

[self.revealViewController setFrontViewController:navController];