I'm seeing a memory leak in iOS 8 in simulator when I do the following with UIActionSheet or UIAlertController. UIActionSheet uses UIAlertController in IOS 8 so the issues are related.
showCameraAction gets called when a button is pressed. I've removed all of the content from the delegate method and still get the leak in the case shown below. Am I using UIActionSheet in some way that I shouldn't? I would appreciate any help in resolving this issue. The same code has no leaks with IOS 7 (in the simulator).
-(IBAction)showCameraAction:(id)sender
{
UIActionSheet* actionSheet = [[UIActionSheet alloc] initWithTitle:@"Photo From:"
delegate:self
cancelButtonTitle:@"Cancel"
destructiveButtonTitle:nil
otherButtonTitles:@"Phone", @"Flickr", nil];
[actionSheet showInView:[[UIApplication sharedApplication] keyWindow]];
//also tried just showInView: self.view
}
//empty
- (void)actionSheet:(UIActionSheet *)actionSheet
clickedButtonAtIndex:(NSInteger)buttonIndex {
}
Also tried with UIAlertController, with the same result:
UIAlertController *alertController = [UIAlertController
alertControllerWithTitle:@"Photo From:"
message:@""
preferredStyle:UIAlertControllerStyleActionSheet];
UIAlertAction *phoneAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"Phone", @"Phone action")
style:UIAlertActionStyleCancel
handler:^(UIAlertAction *action)
{
NSLog(@"Phone action");
}];
UIAlertAction *flickrAction = [UIAlertAction
actionWithTitle:NSLocalizedString(@"Flickr", @"Flickr action")
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action)
{
NSLog(@"Flickr action");
}];
[alertController addAction:phoneAction];
[alertController addAction:flickrAction];
[self presentViewController:alertController animated:YES completion:nil];
Screenshot with trace: https://www.dropbox.com/l/FmnTCd0PvVhuu16BVHZo7p
I would suggest to use "UIAlertController" in iOS8.
And dismiss the alertController object from the presented controller,
while firing any event by "UIAlertAction" block.
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"title"
message:@"message"
preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *alertAction = [UIAlertAction actionWithTitle:@"actionTitle"
style:UIAlertActionStyleDefault
handler:^(UIAlertAction *action) {
//Do ur stuff
[alertController dismissViewControllerAnimated:YES
completion:NULL];
}];
[alertController addAction:alertAction];
[self presentViewController:alertController
animated:YES
completion:NULL];
This is an iOS bug.
See Apple Bug Reporter issue 21005708, Memory leak in UIAlertController under ARC.
This is no answer, but more evidence for the leak, that exceeds a comment. May it help to find a solution or workaround. The leak seems to be device specific on iPad 3/Retina!
I have made some tests myself by overriding retain and release of the view-controller to show the leak in iOS 8.x
See also: https://devforums.apple.com/message/1099577#1099577
- LEAKY Devices: iPad 3 (A1416), iPad Air Simulator
- GOOD Devices: iPhone 6 iOS 8.1.3, iPhone 4s
with iOS 8.1.2
AGC is the view-controller. The correct retain count should be 2.
iPad Retina Simulator iOS 8.1 AND real iPad LEAK
// second run ... this time with LEAK by selecting an option
12:56:50.929 SimplySolitaire[27643:473670] >>> WILL actionSheet showInView: retain = 2
12:56:50.930 SimplySolitaire[27643:473670] AGC retain == 3
12:56:50.950 SimplySolitaire[27643:473670] AGC retain == 4
12:56:50.951 SimplySolitaire[27643:473670] AGC retain == 5
12:56:50.951 SimplySolitaire[27643:473670] AGC retain == 6
12:56:50.951 SimplySolitaire[27643:473670] <<< DID actionSheet showInView: retain = 6
12:56:50.998 SimplySolitaire[27643:473670] AGC release = 5
12:56:51.042 SimplySolitaire[27643:473670] AGC release = 4
12:56:51.042 SimplySolitaire[27643:473670] AGC release = 3
// USER dismisses the action sheet with tapping a button (delegate is nil)
12:56:53.257 SimplySolitaire[27643:473670] AGC retain == 4
12:56:53.257 SimplySolitaire[27643:473670] AGC retain == 5
12:56:53.258 SimplySolitaire[27643:473670] AGC retain == 6
12:56:53.258 SimplySolitaire[27643:473670] AGC retain == 7
12:56:53.258 SimplySolitaire[27643:473670] AGC release = 6
12:56:53.259 SimplySolitaire[27643:473670] AGC release = 5
12:56:53.612 SimplySolitaire[27643:473670] AGC release = 4
12:56:53.612 SimplySolitaire[27643:473670] AGC release = 3 // <<<<<<<<<< LEAK should be 2
// the last release is missing, but only iOS system code has executed.
iPad Retina Simulator iOS 8.1 AND real iPad, dismiss without LEAK
12:54:54.757 SimplySolitaire[27643:473670] >>> WILL actionSheet showInView: retain = 2
12:54:54.758 SimplySolitaire[27643:473670] AGC retain == 3
12:54:54.798 SimplySolitaire[27643:473670] AGC retain == 4
12:54:54.798 SimplySolitaire[27643:473670] AGC retain == 5
12:54:54.798 SimplySolitaire[27643:473670] AGC retain == 6
12:54:54.798 SimplySolitaire[27643:473670] <<< DID actionSheet showInView: retain = 6
12:54:54.845 SimplySolitaire[27643:473670] AGC release = 5
12:54:54.891 SimplySolitaire[27643:473670] AGC release = 4
12:54:54.891 SimplySolitaire[27643:473670] AGC release = 3
// NOW ... dismiss the action sheet without selection (delegate is nil)
12:55:05.643 SimplySolitaire[27643:473670] AGC retain == 4
12:55:05.644 SimplySolitaire[27643:473670] AGC retain == 5
12:55:05.644 SimplySolitaire[27643:473670] AGC retain == 6
12:55:05.644 SimplySolitaire[27643:473670] AGC retain == 7
12:55:05.645 SimplySolitaire[27643:473670] AGC release = 6
12:55:05.645 SimplySolitaire[27643:473670] AGC release = 5
12:55:05.996 SimplySolitaire[27643:473670] AGC release = 4
12:55:05.997 SimplySolitaire[27643:473670] AGC release = 3
12:55:05.997 SimplySolitaire[27643:473670] AGC release = 2 // this is a correct retain of 2
I would suggest switching to UIAlertController. UIActionSheet is deprecated in iOS 8, so you might try giving it a shot and see if there's still the leak
