iOS9 Beta 2. valueForAttribute causing EXC_BAD_ACCESS

I can't tell if this is new because I'm using the following code:

- (BOOL)isUploading
{
    id value;
    NSError *error = nil;
   
    if ([self.document.fileURL getResourceValue:&value forKey:NSURLUbiquitousItemIsUploadingKey error:&error])
    {
        return [value boolValue];
    }
    else
    {
        return NO;
    }
}

This still works for me.

Dirk

Thanks.

I remain puzzled.

As far as I can tell, by turning on zombies...

metadataItem.valueForAttribute()

seems to be trying to access its metadataQuery object. Which is a bad idea, because in my code, the query has been deallocated at that point.

And now the log reports:

-[NSMetadataQuery _allAttributes]: message sent to deallocated instance 0x1370968a0

Hmm, that's strange.

I don't have this issue because I keep the query alive as long as the app runs.

But, I would expect either the NSMetaDataItem to hold a strong reference to it's NSMetaDataQuery if it needs it to be alive or to have ithe reference declared as weak to prevent sending messages to a deallocated instance.

I would first workaround this issue by either keeping the query alive as long your code somehow queries NSMetaDataItem or by using the code I provided in my first post.

Second I would file a bugreport with a small sampleproject to get things sorted out.

Dirk