覆盖和方向改变

在iOS7.0及更高版本中,可以通过实现中提供的以下方法来实现 UIPopoverControllerDelegate :

(void)popoverController:(UIPopoverController *)popoverController willRepositionPopoverToRect:(inout CGRect *)rect inView:(inout UIView **)view

PresentPooverFromRect演示 方法,当接口方向更改时,popover控制器调用此方法。

到目前为止,我找到的唯一解决方案就是在设备旋转时关闭popover/

didRotateFromInterfaceOrientation: ,发送到视图控制器 之后 willRotate... 和 willAnimateRotation... 之前 旋转已经发生了,所以这是错误的地方 presentPopover... 方法调用。)

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
  // if the popover is showing, adjust its position after the re-orientation by presenting it again:
  if (self.myPopoverController != nil)  // if the popover is showing (replace with your own test if you wish)
  {
    [self.myPopoverController presentPopoverFromRect:attachmentRect
                                              inView:myView
                            permittedArrowDirections:UIPopoverArrowDirectionUp
                                            animated:YES];
  }    
}

在上面, self.myPopoverController nil ,这样我就可以检查它是否为“非”- 无

但是,请注意,在进行旋转之前,不需要关闭popover。再来一次同样的流行音乐(在这里保存对popover的引用非常方便。)

在您的例子中,popover是从工具栏按钮发出的,您可以使用如下内容:

- (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
  // if the popover is showing, adjust its position after the re-orientation by presenting it again:
  if (self.myPopoverController != nil)  // if the popover is showing (replace with your own test if you wish)
  {
    [self.myPopoverController presentPopoverFromBarButtonItem:barButtonItem
                                     permittedArrowDirections:UIPopoverArrowDirectionAny
                                                     animated:YES];
  }    
}

如果您只需使用presentPopoverFromBarButtonItem方法来呈现您的popover,则当设备旋转时,popover将自动移动到新按钮位置的正确位置。

你是从巴布托尼姆还是从rect给PresentPoover打电话?你对轮换上的巴布托石有什么改变吗?

苹果的文档特别指出,你需要管理FromRect的旋转位置,或者如果你修改了barbutton项。见本报告第四段 http://developer.apple.com/library/ios/#documentation/uikit/reference/UIPopoverController_class/Reference/Reference.html

同样的问题我也碰到过好几次。我通常只做一个方法来显示popover,如下所示:

- (void) showPopoverForSize:(CGSize) size center:(CGPoint) center {
   CGFloat width = size.width;
    CGFloat height = size.height;
    CGFloat x = center.x - width / 2;
    CGFloat y = center.y - height / 2;
    CGRect frame = CGRectMake(x, y, width, height);
    popover.popoverContentSize = frame.size;

    [popover presentPopoverFromRect:frame inView:self.view permittedArrowDirections:0 animated:YES];
}

接下来我会:

- (void) didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation {
    [super didRotateFromInterfaceOrientation:fromInterfaceOrientation];
    if (popover.isPopoverVisible)
        [self showPopoverForSize:popover.popoverContentSize center:self.view.center];
}

这将把popover放在任何方向的中心。

在方向更改开始时,关闭弹出窗口,在方向更改完成后,再次关闭弹出窗口并在屏幕上显示其位置:

- (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration {
            [_popover dismissPopoverAnimated:YES];
        }
    }

    - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
    {
        if (_popover) {
            [_popover presentPopoverFromRect:frameRect
                                                      inView:self.view
                                    permittedArrowDirections:UIPopoverArrowDirectionUp
                                                    animated:YES];
        }    
    }

正在执行popover功能:

func presentPopover() {
    self.popoverFlag = true
    //Presenting PopOver code goes here
    // ...
}

在改变方向时拒绝提供popover:

override func viewWillTransitionToSize(size: CGSize, withTransitionCoordinator coordinator: UIViewControllerTransitionCoordinator) {

        if self.isKindOfClass(ViewController) && self.popoverFlag{
            guard self.presentedViewController != nil else { return }
            dispatch_async(dispatch_get_main_queue()) {
                self.presentedViewController!.dismissViewControllerAnimated(true, completion: nil)
            }
        }
    }

func popoverPresentationController(popoverPresentationController: UIPopoverPresentationController, willRepositionPopoverToRect rect: UnsafeMutablePointer<CGRect>, inView view: AutoreleasingUnsafeMutablePointer<UIView?>) {
    self.presentPopover()
}

应使用UIPopoverPresentationControllerDelegate方法:

func popoverPresentationController(_ popoverPresentationController: UIPopoverPresentationController, willRepositionPopoverTo rect: UnsafeMutablePointer<CGRect>, in view: AutoreleasingUnsafeMutablePointer<UIView>)

见@Hugo Alonso的答案 here