What problems can I have with a background thread?

Asked Jul 17 '13 at 09:41

Active Jul 17 '13 at 10:05

Viewed 128 times

I have an application that needs to execute a code in background. I just created an empty background task and a thread. In theory this thread should be suspended after 10 minutes, but I saw that it was still alive. What problems can be generated rather than performance?

- (void)applicationDidEnterBackground:(UIApplication *)application
{
    [application beginBackgroundTaskWithExpirationHandler:^{
    }];

     NSThread * thread = [[NSThread alloc] initWithTarget:self selector:@selector(execute:) object:nil];
     [thread start];
}


-(id) execute: (id) obj{
    while (true) {
        NSLog(@"My thread %f", [myApplication backgroundTimeRemaining]);
        sleep(1);
    }
    return nil;
}

PS there is no UIBackgroundModes set on the plist

edited Jul 17 '13 at 10:05

madLokesh

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asked Jul 17 '13 at 09:41

Hola Soy Edu Feliz Navidad

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all I can say is only update UI on main thread – Jasper Jul 17 '13 at 13:48
Ok, but rather than that what can happen for example if you have to download some data from internet and store it into the database? – Hola Soy Edu Feliz Navidad Jul 18 '13 at 08:37
Never had any problems with that, just do everything on your background thread but whenever you need to update your UI, do it on the main one – Jasper Jul 18 '13 at 08:43

What problems can I have with a background thread?

0 Answers0