问题描述
关于 transitionFromView:toView:duration:选项:完成: Apple 文档在最后几行中说:
Regarding transitionFromView:toView:duration:options:completion: Apple doc says this in last few lines:
此方法仅修改视图层次结构中的视图.它确实不要以任何方式修改应用程序的视图控制器.为了例如，如果您使用此方法更改显示的根视图视图控制器，您有责任更新视图控制器适当地处理变化.
如果一个 ViewController 有 2 个全屏尺寸的视图，一次显示一个，则没有问题:
If a ViewController has 2 full screen size views display one at a time then no issues:
[transitionFromView:self.view toView:self.view2...
[transitionFromView:self.view toView:self.view2...
但这意味着什么您有责任适当地更新视图控制器以处理更改?
如果我这样做:
secondViewController *sVc = [[secondViewController alloc]init];
[transitionFromView:self.view toView:sVc.view...
我如何负责适当地更新视图控制器以处理更改?或者如何更新 ViewController?
how its my responsibility to update the view controller appropriately to handle the change? or how to update ViewController?
更新
我创建了一个单一的视图项目，添加 secondVC 然后在按钮点击的 firstVC 中我这样做了:
I created a single view projec, add secondVC then in firstVC on button tap i did this:
self.svc = [[secondVC alloc]init];
[UIView transitionFromView:self.view toView:self.svc.view duration:1.0 options:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOL finished) {}];
... secondVC viewDidLoad 正在工作，其 nslog 正在工作.
... secondVC viewDidLoad is working its nslog is working.
那么如何处理viewcontroller的更新呢?
Then how to handle updating of viewcontroller?
推荐答案
声明您有责任适当地更新视图控制器以处理更改."这意味着您必须适当地调用视图层次结构委托方法，例如:
The statement "it is your responsibility to update the view controller appropriately to handle the change." it meant that you have to appropriately call view hierarchy delegate methods such as:
- (void)viewDidLoad;
- (void)viewDidUnload;
- (void)viewWillAppear;
- (void)viewDidDisappear;
以及其他负责正确视图管理的方法.
And other methods that are responsible for proper view management.
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