ios 如何以编程方式按下 UINavigationController 中的“返回”按钮
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/7646014/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
How to press "Back" button in UINavigationController programmatically
提问by Timur Mustafaev
I have a UIViewControllercalled FriendsViewControllerinside a UINavigationController. And a second UIViewControllercalled FriendsDetailedViewController. When navigating from the first view controller to the second, I want to programmatically press the Backbutton when needed. How to do this?
我有一个UIViewController叫做FriendsViewController内UINavigationController。一秒钟UIViewController叫FriendsDetailedViewController. 从第一个视图控制器导航到第二个视图控制器时，我想Back在需要时以编程方式按下按钮。这该怎么做？
回答by Mann
Simply use
只需使用
[self.navigationController popViewControllerAnimated:YES]
[self.navigationController popViewControllerAnimated:YES]
from FriendsDetailedViewController. Your view will be popped out i.e. the behavior of back button
来自 FriendsDetailedViewController。您的视图将弹出，即后退按钮的行为
回答by Bartek
If by pressing "Back" button you mean just to go to the previous view controller, you can just call:
如果按“后退”按钮你的意思只是去上一个视图控制器，你可以调用：
[self.navigationController popViewControllerAnimated:YES];
回答by MGM
Here is the swift method
这是快速方法
if let navController = self.navigationController {
navController.popViewControllerAnimated(true)
}
回答by Jay Mayu
Here is how I did it in Swift 3
这是我在 Swift 3 中的做法
_ = self.navigationController?.popViewController(animated: true)
_is used to suppress the ugly warning generated by XCode.
_用于抑制 XCode 生成的丑陋警告。
回答by Mohit
1) When you pop in current NavigationController Then
1) 当你弹出当前的 NavigationController 然后
In Swift
在斯威夫特
self.navigationController?.popViewControllerAnimated(true)
Objective C
目标 C
[self.navigationController popViewControllerAnimated:YES];
2) When you back another Navigation controller Then
2）当你支持另一个导航控制器然后
In Swift
在斯威夫特
let story = UIStoryboard(name: "Main", bundle: nil)
let pushVC = story.instantiateViewControllerWithIdentifier("PushVC")
let navigation = story.instantiateViewControllerWithIdentifier("homeNavigation") as! UINavigationController
navigation.pushViewController(pushVC!, animated: true)
In Objective C
在目标 C
UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"storyBoardName" bundle:nil];
pushVC* ObjectOfPushVC = [storyboard instantiateViewControllerWithIdentifier:@"pushVC"];
[self.navigationController pushViewController:ObjectOfPushVC animated:YES];
回答by Amit
Swift 5
斯威夫特 5
self.navigationController?.popViewController(animated: true)
Usage in a code snippet:
在代码片段中的用法：
func unwindViewController() {
self.navigationController?.popViewController(animated: true)
}
