Ios 根据方向正确显示子视图控制器

我正在尝试创建一个facebook组件（UIViewController的子类）来共享图片。现在可以在以下位置找到其状态的演示：

集成在ViewController中，我想这样使用它：

_shareSheet = [[FBSharePictureViewController alloc] initWithImage:self.currentImage.image andDelegate:self]; // Create the instance
[_shareSheet showWithinViewController:self]; // Actually display the sheet with animation
[_shareSheet hide]; // When needed, hide with animation

视图体系结构：

- [UIView] view
-- [UIView] overlay, a full-screen black view (when showWithinViewController: is called, slightly fade in to alpha 0.8)
-- [UIView] _sheetViewContainer, contains the sheet
---- [UIView] topView, contains the cancel and post buttons + a centered label
---- [UIView] bottomView, contains the picture we will share + an UITextView the user can enter text in.
-- spinner, an UIActivityIndicatorView

showWithinViewController功能：

- (void)showWithinViewController:(UIViewController *)parentViewController {

  [parentViewController addChildViewController:self]; // So the parent will foward actions like rotation,...

  // I want it to match the full size of my screen, so if we have a transparent
  // status bar the overlay will be visible under the status bar too
  CGRect frameBefore = self.view.frame;
  [parentViewController.view addSubview:self.view]; // view frame = {{0, 0}, {320, 460}}
  self.view.frame = frameBefore; // view frame = {{0, -20}, {320, 480}}

  self.view.hidden = NO;

  [UIView animateWithDuration:0.4 animations:^{
    // _sheetViewContainer.frame is originally centered horizontally and y is offscreen
    _sheetViewContainer.frame = [self getSheetViewFinalPos]; // I want the sheet to be centered between the UINavigationBar and the UIKeyboard
    self.overlay.alpha = 0.8f;
  } completion:^(BOOL finished) {
    self.cancelButton.enabled = YES;
    self.postButton.enabled = YES;
  }];

- (CGRect)getSheetViewFinalPos {
  CGFloat keyboardHeight = UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) ? 216 : 162;
  CGFloat navBarHeight = UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) ? 44 : 28;

  CGRect f = _sheetViewContainer.frame;
  f.origin.y = navBarHeight + 20 + (self.view.frame.size.height-20-navBarHeight-_sheetViewContainer.frame.size.height-keyboardHeight)/2;
  return f;
}

}

getSheetViewFinalPos函数：

- (void)showWithinViewController:(UIViewController *)parentViewController {

  [parentViewController addChildViewController:self]; // So the parent will foward actions like rotation,...

  // I want it to match the full size of my screen, so if we have a transparent
  // status bar the overlay will be visible under the status bar too
  CGRect frameBefore = self.view.frame;
  [parentViewController.view addSubview:self.view]; // view frame = {{0, 0}, {320, 460}}
  self.view.frame = frameBefore; // view frame = {{0, -20}, {320, 480}}

  self.view.hidden = NO;

  [UIView animateWithDuration:0.4 animations:^{
    // _sheetViewContainer.frame is originally centered horizontally and y is offscreen
    _sheetViewContainer.frame = [self getSheetViewFinalPos]; // I want the sheet to be centered between the UINavigationBar and the UIKeyboard
    self.overlay.alpha = 0.8f;
  } completion:^(BOOL finished) {
    self.cancelButton.enabled = YES;
    self.postButton.enabled = YES;
  }];

- (CGRect)getSheetViewFinalPos {
  CGFloat keyboardHeight = UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) ? 216 : 162;
  CGFloat navBarHeight = UIInterfaceOrientationIsPortrait([[UIApplication sharedApplication] statusBarOrientation]) ? 44 : 28;

  CGRect f = _sheetViewContainer.frame;
  f.origin.y = navBarHeight + 20 + (self.view.frame.size.height-20-navBarHeight-_sheetViewContainer.frame.size.height-keyboardHeight)/2;
  return f;
}

现在我的问题是：（如果访问上面的链接，您可以预览：）

我想为我的组件找到最好的方法，根据方向自动调整其框架的大小

• 我尝试了

  UIAutoresizingMask

  ，但它的行为非常奇怪，我无法成功地使它工作：/
• 我曾尝试使用

  viewWillLayoutSubviews

  方法，但如果我的视图被隐藏（当我旋转且视图未显示时），则此方法不起作用
• 我曾尝试使用didRotateFromInterfaceOrientation，但当父视图控制器最初处于横向模式时，我显示我的组件，它将以纵向模式显示

---

如何实现这一点？

您是如何尝试设置

UIAutoresizingMask

？简而言之，将覆盖设置为flexibleWidth | flexibleHeight（因此始终全屏显示），_sheetViewContainer设置为allFlexible（边距+宽度，因此大小+位置将发生变化），将上/下视图设置为flexibleWidth | flexibleHeight。一切都是一团糟（转到上面的链接，第二个视频）。但我也使用layermask来实现圆角效果，你认为这可能是问题所在吗？