UIActivityViewController - can't understand this memory leak

Question

Can someone please tell me why the following code is leaking in Instruments?

UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
activityController.excludedActivityTypes = [NSArray arrayWithObjects:@"a",@"b", nil];


[self presentViewController:activityController animated:YES completion:nil];
[activityController release];

Instruments show the leak on row:

activityController.excludedActivityTypes = [NSArray arrayWithObjects:@"a",@"b", nil];

What does the static analyzer say, because I see no leak. – CodaFi Feb 20 '13 at 19:30 — CodaFi, Feb 20 '13 at 19:30

score 0 · Accepted Answer · edited May 23 '17 at 10:24

The following should do the trick (__block and completion)

__block UIActivityViewController *activityController = [[UIActivityViewController alloc] initWithActivityItems:activityItems applicationActivities:nil];
activityController.excludedActivityTypes = [NSArray arrayWithObjects:@"a",@"b", nil];

[self presentViewController:activityController animated:YES completion:^{ activityController.excludedActivityTypes=nil; activityController=nil;}];
[activityController release];

UIActivityViewController - can't understand this memory leak

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