我制作了一个测试应用程序，以熟悉制作自定义容器 View Controller 的过程。如果在应用程序首次启动时或切换到其他 View Controller 后旋转设备，则新 View 将按照我的意图调整大小以占据整个屏幕。但是，如果我在应用启动后旋转，然后切换到新的 View Controller ，则 View 将保持其纵向尺寸，而不是变得越来越短(实际上略有不同-从320,460变为300,480)。主 View Controller 在应用程序委托(delegate)中初始化为alloc(没有xib)，并设置为窗口的根 View Controller 。这是我的MasterViewController(自定义容器 Controller )中的代码:
- (void)viewDidLoad {
[super viewDidLoad];
WelcomeController *welcome = [[WelcomeController alloc] initWithNibName:@"ViewController" bundle:nil];
self.currentController = welcome;
[self addChildViewController:welcome];
[self.view addSubview:welcome.view];
UISwipeGestureRecognizer *swipeLeft = [[UISwipeGestureRecognizer alloc] initWithTarget:self action:@selector(swipeLeft:)];
swipeLeft.direction = UISwipeGestureRecognizerDirectionLeft;
[self.view addGestureRecognizer:swipeLeft];
}
- (void)swipeLeft:(UISwipeGestureRecognizer *)gesture {
if (gesture.state == UIGestureRecognizerStateRecognized) {
UIActionSheet *sheet =[[UIActionSheet alloc] initWithTitle:@"Select A Destination" delegate:self cancelButtonTitle:@"Cancel" destructiveButtonTitle:nil otherButtonTitles:@"welcome",@"Play",@"Scores", nil];
[sheet showInView:self.view];
}
}
- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex {
switch (buttonIndex) {
case 0:{
if ([self.currentController class] != [WelcomeController class] ) {
WelcomeController *welcome = [[WelcomeController alloc] initWithNibName:@"ViewController" bundle:nil];
[self addChildViewController:welcome];
[self moveToNewController:welcome];
}
break;
}
case 1:{
if ([self.currentController class] != [PlayViewController class] ) {
PlayViewController *player = [[PlayViewController alloc] initWithNibName:@"PlayViewController" bundle:nil];
[self addChildViewController:player];
[self moveToNewController:player];
}
break;
}
case 2:{
if ([self.currentController class] != [HighScores class] ) {
HighScores *scorer = [[HighScores alloc] initWithNibName:@"HighScores" bundle:nil];
[self addChildViewController:scorer];
[self moveToNewController:scorer];
}
break;
}
case 3:
NSLog(@"Cancelled");
break;
default:
break;
}
}
-(void)moveToNewController:(id) newController {
[self.currentController willMoveToParentViewController:nil];
[self transitionFromViewController:self.currentController toViewController:newController duration:.6 options:UIViewAnimationOptionTransitionCrossDissolve animations:^{}
completion:^(BOOL finished) {
[self.currentController removeFromParentViewController];
[newController didMoveToParentViewController:self];
self.currentController = newController;
}];
}
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
return YES;//(interfaceOrientation == (UIInterfaceOrientationPortrait | UIInterfaceOrientationLandscapeLeft));
}
为什么会发生这种情况的任何想法(我不知道这是否意味着主 View Controller 的 View 没有调整大小，但是当我得到这种非调整大小的行为时，手势识别器仅在狭窄的 View 中响应，而不是在整个屏幕上响应)？
最佳答案
您没有将旋转消息发送到 subview Controller 。至少不在您发布的代码中。切换Child Controller之后，您甚至可以使用[self.currentController removeFromParentViewController]从ChildViewControllers数组中删除先前的 child ，因此，即使您实现-(BOOL)automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers ，您在ParentViewController中始终只有一个ChildViewController。
我已经完成了这项工作，所以我将粘贴您如何执行此操作。首先，我创建所有ViewController，并将它们作为 subview Controller 添加到ParentViewController。然后调用didMoveToParentViewController:方法。
//Controller1
Controller1 *c1 = [[Controller1 alloc] init];
c1.view.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[self addChildViewController:c1];
[c1 didMoveToParentViewController:self];
//Controller2
Controller2 *c2 = [storyboard instantiateViewControllerWithIdentifier:@"c2"];
index.view.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[self addChildViewController:c2];
[c2 didMoveToParentViewController:self];
c2.view.frame = m_contentView.frame;
[self.view addSubview:c2.view]; //It is in initial screen so set it right away
m_selectedViewController = c2;
//Controller3
Controller3 *c3 = [storyboard instantiateViewControllerWithIdentifier:@"c3"];
compare.view.autoresizingMask = UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
[self addChildViewController:c3];
[c3 didMoveToParentViewController:self];
m_controllers = [NSArray arrayWithObjects:c1, c2, c3, nil]; //Hmm now i think this is not needed, I can access viewController directly from self.childViewControllers array
- (BOOL)automaticallyForwardAppearanceAndRotationMethodsToChildViewControllers
{
return YES;
}
if (value < m_controllers.count)
{
UIViewController *contentViewController = [m_controllers objectAtIndex:value];
contentViewController.view.frame = m_contentView.frame;
[self transitionFromViewController:m_selectedViewController toViewController:contentViewController duration:0 options:UIViewAnimationOptionTransitionNone animations:nil completion:^(BOOL finished) {
m_selectedViewController = contentViewController;
}
];
}
- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
for (UIViewController *vc in m_controllers)
{
if(vc != m_selectedViewController)
[vc willRotateToInterfaceOrientation:toInterfaceOrientation duration:duration];
}
}
- (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration
{
for (UIViewController *vc in m_controllers)
{
if(vc != m_selectedViewController)
[vc willAnimateRotationToInterfaceOrientation:toInterfaceOrientation duration:duration];
}
}
- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
for (UIViewController *vc in m_controllers)
{
if(vc != m_selectedViewController)
[vc didRotateFromInterfaceOrientation:fromInterfaceOrientation];
}
}
关于ios - 自定义容器 Controller 中的 View 旋转后未调整大小，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/12103610/