Ios 如何在不破坏复杂布局的情况下从容器视图中删除？

我有一个场景是建立在附加的屏幕上

根据从顶部栏中选择的按钮，我将在容器视图中加载特定的视图控制器。当更改选择或用户点击控制器上的“后退”按钮时，应删除容器的固有内容

添加到容器视图的代码：

if (self.containerVC != nil) {
    [self removeController];
}

UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
FirstViewController* firstVC = [storyboard instantiateViewControllerWithIdentifier:@"First"];

[self addChildViewController:firstVC];
[self.containerVieww addSubview:firstVC.view];
firstVC.view.frame = CGRectMake(0, 0, self.containerVieww.bounds.size.width, self.containerVieww.bounds.size.height);
[firstVC.view layoutSubviews];
[firstVC didMoveToParentViewController:self];

firstVC.modalPresentationStyle = UIModalPresentationCurrentContext;

[UIView animateWithDuration:0.5 animations:^{
    self.logViewHeight.constant = self.contentView.frame.size.height * 0.9;
    [firstVC.view layoutSubviews];
}];

firstVC.delegate = self;
self.containerVC = firstVC;

[self.containerVC dismissViewControllerAnimated:YES completion:nil];

[UIView animateWithDuration:0.5 animations:^{
    self.logViewHeight.constant = 0;
    [self.view layoutIfNeeded];
 }];

[self willMoveToParentViewController:nil];
[self removeFromParentViewController];
[self.containerVC.view removeFromSuperview];    // Caused layout destoying !!!
self.containerVC = nil;

用于从容器视图中删除的代码：

if (self.containerVC != nil) {
    [self removeController];
}

UIStoryboard* storyboard = [UIStoryboard storyboardWithName:@"Main" bundle:nil];
FirstViewController* firstVC = [storyboard instantiateViewControllerWithIdentifier:@"First"];

[self addChildViewController:firstVC];
[self.containerVieww addSubview:firstVC.view];
firstVC.view.frame = CGRectMake(0, 0, self.containerVieww.bounds.size.width, self.containerVieww.bounds.size.height);
[firstVC.view layoutSubviews];
[firstVC didMoveToParentViewController:self];

firstVC.modalPresentationStyle = UIModalPresentationCurrentContext;

[UIView animateWithDuration:0.5 animations:^{
    self.logViewHeight.constant = self.contentView.frame.size.height * 0.9;
    [firstVC.view layoutSubviews];
}];

firstVC.delegate = self;
self.containerVC = firstVC;

[self.containerVC dismissViewControllerAnimated:YES completion:nil];

[UIView animateWithDuration:0.5 animations:^{
    self.logViewHeight.constant = 0;
    [self.view layoutIfNeeded];
 }];

[self willMoveToParentViewController:nil];
[self removeFromParentViewController];
[self.containerVC.view removeFromSuperview];    // Caused layout destoying !!!
self.containerVC = nil;

调用“removeFromSuperview”后，我的布局中的“蓝色视图”消失

---

如何在不破坏复杂布局的情况下从容器视图中删除？

不太清楚您在做什么。。。您正在设置

firstVC.modalPresentationStyle

，然后在删除时调用

dismissViewControllerAnimated

，但您没有显示任何

presentViewController

？您是否在调试控制台中收到任何错误/警告消息？在

蓝色视图

消失后，您是否使用

调试视图层次结构

检查对象？基本上，您必须执行

[firstVC.View removeFromSuperview]。你要删除的不是你要添加的，而是谢谢你们的评论。上次我注意到在删除视图期间调用函数的顺序是错误的。我已经更改了它们，错误消失了。所以问题就解决了。