ios - Action Sheet 在 iphone 中有效，但在 ipad 中无效

Question

操作表在 iPhone 上运行良好，但当我在 iPad 上尝试时，它不起作用。有什么解决办法吗？

我的代码如下:

-(void)setUpAlertCtrl{
    self.alertCtrl=[UIAlertController alertControllerWithTitle:@"Select Image"
                                                       message:nil
                                                preferredStyle:UIAlertControllerStyleActionSheet];
}

Answer 1

试试这个

if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad)

{

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:nil message:@"Your message" preferredStyle:UIAlertControllerStyleActionSheet];

// Remove arrow from action sheet.
[alertController.popoverPresentationController setPermittedArrowDirections:0];
//For set action sheet to middle of view.
CGRect rect = self.view.frame;
rect.origin.x = self.view.frame.size.width / 20;
rect.origin.y = self.view.frame.size.height / 20;
alertController.popoverPresentationController.sourceView = self.view;
alertController.popoverPresentationController.sourceRect = rect;

[self presentViewController:alertController animated:YES completion:nil];    }