addChildViewController 不适合 UIViewController

Question

受到 Scott Sherwood tutorial 的启发，我在 UIViewController 中有一个 UIView，它通过自定义 segues 收取不同的 UItableviewController/UIViewController。

segue.m

- (void) perform {

DashboardViewController *controller = (DashboardViewController *)self.sourceViewController;
UIViewController *dst = (UIViewController *) self.destinationViewController;

for(UIView *view in controller.container.subviews){
    [view removeFromSuperview];
}


controller.currentViewController = dst;
[controller addChildViewController:dst];
[controller.container addSubview:dst.view];
}

第一个segue在viewDidLoad方法中调用

controller.m

- (void)viewDidLoad {
[super viewDidLoad];
[self performSegueWithIdentifier:@"dashboardNewPon" sender:[self.buttons.subviews objectAtIndex:0]];
}

然后画面就这样开始了

其他 segues，有此行为

我不明白为什么，但它肯定会自动布局。

谢谢

Answer 1

我认为你应该添加这一行

CGRect dstFrame = CGRectMake (0, 0, controller.container.frame.size.width, controller.container.frame.size.height);    
dst.view.frame = dstFrame;

之后

controller.currentViewController = dst;

并在 viewWillAppear 中调用第一个 segue:

Answer 2

我通过阅读这篇文章找到了解决方案 article。

这一行之后

[controller.container addSubview:dst.view];

我添加了这个

dst.view.translatesAutoresizingMaskIntoConstraints = NO;

[controller.container addConstraint:[NSLayoutConstraint constraintWithItem:dst.view
                                                           attribute:NSLayoutAttributeTop
                                                           relatedBy:NSLayoutRelationEqual
                                                              toItem:controller.container
                                                           attribute:NSLayoutAttributeTop
                                                          multiplier:1.0
                                                            constant:0.0]];

[controller.container addConstraint:[NSLayoutConstraint constraintWithItem:dst.view
                                                      attribute:NSLayoutAttributeLeading
                                                      relatedBy:NSLayoutRelationEqual
                                                         toItem:controller.container
                                                      attribute:NSLayoutAttributeLeading
                                                     multiplier:1.0
                                                       constant:0.0]];

[controller.container addConstraint:[NSLayoutConstraint constraintWithItem:dst.view
                                                      attribute:NSLayoutAttributeBottom
                                                      relatedBy:NSLayoutRelationEqual
                                                         toItem:controller.container
                                                      attribute:NSLayoutAttributeBottom
                                                     multiplier:1.0
                                                       constant:0.0]];

[controller.container addConstraint:[NSLayoutConstraint constraintWithItem:dst.view
                                                      attribute:NSLayoutAttributeTrailing
                                                      relatedBy:NSLayoutRelationEqual
                                                         toItem:controller.container
                                                      attribute:NSLayoutAttributeTrailing
                                                     multiplier:1.0
                                                       constant:0.0]];

addChildViewController 不适合 UIViewController

addChildViewController don't fit UIViewController

objective-c

ios

uistoryboard