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UIDevice CFDictionaryGetValue error in background

I'm checking:

[[UIDevice currentDevice] systemName]

in applicationDidEnterBackground. This raises the EXC_BAD_ACCESS (SIGSEGV) signal. The stack trace shows that this is happening inside the UIDevice that calls CFDictionaryGetValue.

Experimentation, challenge:

CFDictionaryGetValue(NULL, "key");

results in the same error.

Any ideas? I have searched for documentation about accessing UIDevice in the background and have found nothing to indicate that this should be the problem.

thank

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1 answer


Calling (and logging) [[UIDevice currentDevice] systemName] on applicationDidEnterBackground: works fine in my test. CFDictionaryGetValue (NULL, "key") always fails and has nothing to do with the problem you are experiencing.



- (void)applicationDidEnterBackground:(UIApplication *)application
{
    NSString *systemName = [[UIDevice currentDevice] systemName];
    if ( systemName )
        NSLog(@"%@", systemName);
    else
        NSLog(@"null systemName");
}
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