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UIAlertController is Crashed (iPad)

由 柔情痞子 提交于 2019-11-28 20:16:41
Karoly Nyisztor

To keep it device independent, rather use it as shown in the snippet below. This code will return nil for popoverPresentationController on an iPhone / compact size device, so you can safely use it in universal projects.

if let popoverPresentationController = shareMenu.popoverPresentationController {
    popoverPresentationController.sourceView = self.view
    popoverPresentationController.sourceRect = sender.bounds
}
self.presentViewController(shareMenu, animated: true, completion: nil)

try this code:

shareMenu.popoverPresentationController.sourceView = self.view
shareMenu.popoverPresentationController.sourceRect = CGRectMake(self.view.bounds.size.width / 2.0, self.view.bounds.size.height / 2.0, 1.0, 1.0)

self.presentViewController(shareMenu, animated: true, completion: nil)
kurtanamo

Swift 4

popoverPresentationController.permittedArrowDirections = .init(rawValue: 0)
popoverPresentationController.sourceView = self.view
popoverPresentationController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)
Mayuri R Talaviya

I am also face same issue and finally got the solution. Here is my solution for Objective-C:

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"Select you option:"
                                                                         message:nil
                                                                  preferredStyle:UIAlertControllerStyleActionSheet];

UIAlertAction *action = [UIAlertAction actionWithTitle:@“share”
                                                     style:UIAlertActionStyleDefault
                                                   handler:^(UIAlertAction *action) {
                                                       // do other things
                                                   }];
[alertController addAction:action];

UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"Cancel"
                                                       style:UIAlertActionStyleCancel
                                                     handler:^(UIAlertAction *action) {
                                                     }];
[alertController addAction:cancelAction];

// 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];

I use this handy extension to create action sheets that never crash 

extension UIAlertController {

    class func actionSheetWith(title: String?, message: String?, sourceView: UIView?, sourceFrame: CGRect?) -> UIAlertController {
        let actionController = UIAlertController(title: title, message: message, preferredStyle: .actionSheet)
        if actionController.responds(to: #selector(getter: popoverPresentationController)) {
            actionController.popoverPresentationController?.sourceView = sourceView ?? StoryboardHelper.tabBarControllerTopController()?.view
            actionController.popoverPresentationController?.sourceRect = sourceFrame ?? CGRect(x: 0, y: 0, width: 0, height: 0)
        }
        return actionController
    }

}

reference: ActionSheet Popover on iPad in Swift

create popoverController :

let alertController = UIAlertController(title: nil, message: "Alert message.", preferredStyle: .actionSheet)
self.present(alertController, animated: true, completion: nil)

if you want show alert with indicator view should:

if let popoverController = alertController.popoverPresentationController {
    popoverController.barButtonItem = sender
}

with indicator

show alert in center:

if let popoverController = alertController.popoverPresentationController {
  popoverController.sourceView = self.view
  popoverController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0) 
}

center with indicator

center no indicator:

if let popoverController = alertController.popoverPresentationController {
  popoverController.sourceView = self.view
  popoverController.sourceRect = CGRect(x: self.view.bounds.midX, y: self.view.bounds.midY, width: 0, height: 0)
  popoverController.permittedArrowDirections = []
}

center no indicator

I use this code, very easy and understand, maybe i can help for any 

//if iPhone
    if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {
        [self presentViewController:actionSheet animated:YES completion:nil];
    }
    //if iPad
    else {
        // Change Rect to position Popover
        UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:actionSheet];
        [popup presentPopoverFromRect:CGRectMake(self.view.frame.size.width/2, self.view.frame.size.height/4, 0, 0)inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    }
sohail059

Swift 3

shareMenu.popoverPresentationController?.sourceView = self.view
shareMenu.popoverPresentationController?.sourceRect = 
    CGRect(x: view.bounds.size.width, 
           y: view.bounds.size.height-80, 
           width: 1.0, height: 1.0)

source rect is the point from were you want to show popover view.

标签
ios
ipad
uipopovercontroller
uialertcontroller
uialertsheet
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