UIActivityViewController crashing on iOS 8 iPads

On iPad the activity view controller will be displayed as a popover using the new UIPopoverPresentationController, it requires that you specify an anchor point for the presentation of the popover using one of the three following properties:

• barButtonItem
• sourceView
• sourceRect

In order to specify the anchor point you will need to obtain a reference to the UIActivityController's UIPopoverPresentationController and set one of the properties as follows:

if ( [activityViewController respondsToSelector:@selector(popoverPresentationController)] ) { // iOS8 activityViewController.popoverPresentationController.sourceView =parentView; }

Same problem is come to my project then i found the solution that to open the UIActivityViewController in iPad we have to use UIPopoverController

Here is a code to use it in iPhone and iPad both:

//to attach the image and text with sharing UIImage *image=[UIImage imageNamed:@"giraffe.png"];NSString *str=@"Image form My app";NSArray *postItems=@[str,image];UIActivityViewController *controller = [[UIActivityViewController alloc] initWithActivityItems:postItems applicationActivities:nil];//if iPhoneif (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPhone) {    [self presentViewController:controller animated:YES completion:nil];}//if iPadelse {    // Change Rect to position Popover    UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:controller];    [popup presentPopoverFromRect:CGRectMake(self.view.frame.size.width/2, self.view.frame.size.height/4, 0, 0)inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];}

For swift 4.2 / swift 5

func openShareDilog() {    let text = "share text will goes here"    // set up activity view controller    let textToShare = [text]    let activityViewController = UIActivityViewController(activityItems: textToShare, applicationActivities: nil)    activityViewController.excludedActivityTypes = [.airDrop]    if let popoverController = activityViewController.popoverPresentationController {        popoverController.sourceRect = CGRect(x: UIScreen.main.bounds.width / 2, y: UIScreen.main.bounds.height / 2, width: 0, height: 0)        popoverController.sourceView = self.view        popoverController.permittedArrowDirections = UIPopoverArrowDirection(rawValue: 0)    }    self.present(activityViewController, animated: true, completion: nil)}

I was encountering this exact problem recently (the original question) in Swift 2.0, where UIActivityViewController worked fine for iPhones, but caused crashes when simulating iPads.

I just want to add to this thread of answers here that, at least in Swift 2.0, you don't need an if statement. You can just make the popoverPresentationController optional.

As a quick aside, the accepted answer appears to be saying that you could have just a sourceView, just a sourceRect, or just a barButtonItem, but according to Apple's documentation for UIPopoverPresentationController you need one of the following:

• barButtonItem
• sourceView and sourceRect

The particular example I was working on is below, where I am creating a function that takes in a UIView (for the sourceView and sourceRect) and String (the UIActivityViewController's sole activityItem).

func presentActivityViewController(sourceView: UIView, activityItem: String ) {    let activityViewController = UIActivityViewController(activityItems: [activityItem], applicationActivities: [])    activityViewController.popoverPresentationController?.sourceView = sourceView    activityViewController.popoverPresentationController?.sourceRect = sourceView.bounds    self.presentViewController(activityViewController, animated: true, completion: nil)}

This code works on iPhone and iPad (and even tvOS I think) -- if the device does not support popoverPresentationController, the two lines of code that mention it are essentially ignored.

Kinda nice that all you need to do to make it work for iPads is just add two lines of code, or just one if you're using a barButtonItem!