As titled, in iOS8, [UIPopoverController presentPopoverFromRect] does not work for [UIApplication sharedApplication].keyWindow any more. (It does work in iOS7)
I verified following codes:
TestViewController *test = [[TestViewController alloc] initWithNibName:nil bundle:nil];
if (testPopoverController == nil) {
testPopoverController = [[UIPopoverController alloc] initWithContentViewController:test];
testPopoverController.popoverContentSize = CGSizeMake(250, 95*5);
}
CGPoint point = [sender convertPoint:CGPointMake(0, 0) toView:nil];
CGRect rect = CGRectMake(point.x, point.y, 24, 24);
[testPopoverController presentPopoverFromRect:rect inView:[UIApplication sharedApplication].keyWindow permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
The best solution I've come up with is to handle it conditionally. If on iOS 7, use the working code we had for presenting a UIPopoverController on the key window. If on iOS 8, use the following:
viewController.modalPresentationStyle = UIModalPresentationPopover;
UIPopoverPresentationController *presentationController = viewController.popoverPresentationController;
[presentationController setDelegate:self];
presentationController.permittedArrowDirections = 0;
presentationController.sourceView = [[UIApplication sharedApplication] keyWindow];
presentationController.sourceRect = [[UIApplication sharedApplication] keyWindow].bounds;
[viewController setPreferredContentSize:CGSizeMake(320, 480)];
[parentController presentViewController:viewController animated:YES completion:nil];
This ends up functioning identically to:
self.popoverController = [[UIPopoverController alloc] initWithContentViewController:viewController];
[self.popoverController setDelegate:self];
[self.popoverController setPopoverContentSize:isLandscape() ? CGSizeMake(480*2, 320*2) : CGSizeMake(320*2, 480*2)];
[self.padPopover presentPopoverFromRect:CGSizeMake(320, 480)
inView:[[UIApplication sharedApplication] keyWindow]
permittedArrowDirections:0
animated:YES];
Change the inView parameter in
[testPopoverController presentPopoverFromRect:rect inView:[UIApplication sharedApplication].keyWindow permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
to
[testPopoverController presentPopoverFromRect:rect inView:"your current View Controller's view" permittedArrowDirections:UIPopoverArrowDirectionDown animated:YES];
And make sure it is in dispatch block
dispatch_async(dispatch_get_main_queue(), ^{
});
Also kip changing your rect origin n size values if it is within the bounds
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