ios - UIPopoverPresentationController 无法设置箭头颜色

Question

我正在尝试在 iPhone 上使用 UIPopoverPresentationController 类呈现弹出窗口。 我需要在弹出框内显示导航 Controller 。所以我做了以下事情:

    UINavigationController *navigationController = [[UINavigationController alloc] initWithRootViewController:viewController];
    viewController.preferredContentSize = size;
    navigationController.modalPresentationStyle = UIModalPresentationPopover;
    self.currentPopoverController = navigationController.popoverPresentationController;
    self.currentPopoverController.backgroundColor = [UIColor commonApplicationBgColor];//My common app blue color
    self.view.alpha = 0.7;
    [self presentViewController:navigationController animated:YES completion:nil];

它工作正常，但箭头颜色与弹出导航栏背景颜色不同。我检查过它们使用相同的 [UIColor commonApplicationBgColor]，但看起来箭头颜色更深。尝试为 self.currentPopoverController.backgroundColor 设置 alpha，但它仍然有错误的颜色。 请检查图像:

Answer 1

如果你不想要箭头那么你可以将 0 传递给 permittedarrowdirection 就像，

[popoverController presentPopoverFromRect:YOUR_RECT
                                inView:self.view 
              permittedArrowDirections:0
                              animated:YES];

更新:

你可以这样设置，

 popover = [[UIPopoverController alloc] initWithContentViewController:contentViewController];
 popover.backgroundColor = contentViewController.view.backgroundColor; 

将背景颜色设置为 popovercontroller。

更新 2:

myPopoverViewController.modalPresentationStyle = UIModalPresentationPopover;
[self presentViewController:myPopoverViewController animated: YES completion: nil];

// Get the popover presentation controller and configure it.
UIPopoverPresentationController *presentationController =
     [myPopoverViewController popoverPresentationController];
 presentationController.permittedArrowDirections =
     UIPopoverArrowDirectionLeft | UIPopoverArrowDirectionRight;
  presentationController.sourceView = myView;
 presentationController.sourceRect = sourceRect;

presentationController.backgroundColor = [UIColor grayColor]; //set your expacted color here.

希望对你有帮助