2014/10/15 下午 10:03:47

iphone Programming Glossary: applicationdidenterbackground

Getting user location every n minutes after app goes to background

http://stackoverflow.com/questions/10235203/getting-user-location-every-n-minutes-after-app-goes-to-background

continues to decrease even after I start and stop locationServices. This is how I developed it void applicationDidEnterBackground UIApplication application UIApplication app UIApplication sharedApplication bgTask app beginBackgroundTaskWithExpirationHandler.. there's no timer during background location. This will run indefinitely. Add timer by using this code snippet void applicationDidEnterBackground self.locationManager stopUpdatingLocation UIApplication app UIApplication sharedApplication bgTask app beginBackgroundTaskWithExpirationHandler..

Detect when home button is pressed iOS

http://stackoverflow.com/questions/10324596/detect-when-home-button-is-pressed-ios

tasks disable timers and throttle down OpenGL ES frame rates. Games should use this method to pause the game. void applicationDidEnterBackground UIApplication application Use this method to release shared resources save user data invalidate timers and store enough.. UIApplication application Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground . In your implementation file void viewDidDisappear BOOL animated void viewWillDisappear BOOL animated share improve this..

Why is NSUserDefaults not saving my values?

http://stackoverflow.com/questions/2622754/why-is-nsuserdefaults-not-saving-my-values

may not get saved when pressing the home button. Manually calling NSUserDefaults standardUserDefaults synchronize in applicationDidEnterBackground should ensure that your User Defaults are saved correctly this should really be a built in behaviour IMO . share improve..

ApplicationWillTerminate in iOS 4.0

http://stackoverflow.com/questions/3139588/applicationwillterminate-in-ios-4-0

method is not getting called in iOS 4.0 When I hit the Home button I am seeing the applicationWillResignActive and applicationDidEnterBackground delegate methods getting called. void applicationWillResignActive UIApplication application NSLog @ Application Did Resign.. getting called. void applicationWillResignActive UIApplication application NSLog @ Application Did Resign Active void applicationDidEnterBackground UIApplication application NSLog @ Application Did Enter Background And when I double Tap the Home button and again launch..

Entering background on iOS4 to play audio

http://stackoverflow.com/questions/3161635/entering-background-on-ios4-to-play-audio

is What are they doing that I am missing Do I also have to use their new delegates somehow or call the audio on the applicationDidEnterBackground To me that wouldn't make sense since I am not saving state they do for me with fast app switching or really handling anything..

applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. applicationDidEnterBackground

http://stackoverflow.com/questions/3712979/applicationwillenterforeground-vs-applicationdidbecomeactive-applicationwillre

vs. applicationDidBecomeActive applicationWillResignActive vs. applicationDidEnterBackground Which is the proper delegate to implement when an application is waking up from being in the background and you want it.. when an application is going to sleep and you want to prep it to cleanup and save data applicationWillResignActive vs. applicationDidEnterBackground What's the difference Also I've noticed that applicationWillResignActive gets called when an incoming SMS or call comes.. cleanup since the user didn't exit the app. So I would think it makes more sense to do cleanup work just in applicationDidEnterBackground. I would appreciate your input on best practices to follow on choosing which delegates to implement for waking up and going..

iPhone - Backgrounding to poll for events

http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events

Panic This is just a Push Notification Test. app scheduleLocalNotification alarm and the registration is done in void applicationDidEnterBackground UIApplication application This is where you can do your X Minutes if 10Minutes is okay. BOOL backgroundAccepted UIApplication.. as the system allows your app to be running. All timers and threads stay running until iOS terminates your app. void applicationDidEnterBackground UIApplication application UIApplication app UIApplication sharedApplication bgTask app beginBackgroundTaskWithExpirationHandler.. while 1 NSLog @ BGTime left f UIApplication sharedApplication .backgroundTimeRemaining self doSomething sleep 1 void applicationDidEnterBackground UIApplication application BOOL backgroundAccepted UIApplication sharedApplication setKeepAliveTimeout 600 handler ^ self..

How to Maintain VOIP socket connection in background?

http://stackoverflow.com/questions/5987495/how-to-maintain-voip-socket-connection-in-background

forMode NSDefaultRunLoopMode inputStream open outputStream open 2. Should I reconnect the stream in the handler applicationDidEnterBackground UIApplication sharedApplication setKeepAliveTimeout 86400 handler ^ void if inputStream inputStream close if outputStream..

applicationWillTerminate when is it called and when not

http://stackoverflow.com/questions/7818045/applicationwillterminate-when-is-it-called-and-when-not