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2014/10/15 ¤U¤È 10:08:36
iphone Programming Glossary: executionHow do you trigger a block after a delay, like -performSelector:withObject:afterDelay:? http://stackoverflow.com/questions/4139219/how-do-you-trigger-a-block-after-a-delay-like-performselectorwithobjectafter those variables from your local scope instead. int parameter1 12 float parameter2 144.1 Delay execution of my block for 10 seconds. dispatch_after dispatch_time DISPATCH_TIME_NOW 10 NSEC_PER_SEC dispatch_get_main_queue..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do.. means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being executed for nearly 30 seconds. This.. minimum time of the VoIP minimumtime setKeepAliveTimeout 600 . So THIS code leads into infinite execution in background Header UIBackgroundTaskIdentifier bgTask Code if the iOS device allows background execution..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application task being killed. This does work since location is one of the three allowed types of background execution . Note Did loose some time by testing this in the simulator where it doesn't work works fine on my phone...
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention class's method last. This makes sure that you can rely on the state of the object throughout the execution of your method. Finally take any other case on a case by case basis. For instance if you're handling..
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:? http://stackoverflow.com/questions/4139219/how-do-you-trigger-a-block-after-a-delay-like-performselectorwithobjectafter to accept no parameters but you can just let the block capture those variables from your local scope instead. int parameter1 12 float parameter2 144.1 Delay execution of my block for 10 seconds. dispatch_after dispatch_time DISPATCH_TIME_NOW 10 NSEC_PER_SEC dispatch_get_main_queue ^ NSLog @ parameter1 d parameter2 f parameter1..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events will abuse later. In my case I used VoIP backgrounding enabled in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do sth. According to Apple we have ONLY 30 seconds to perform.. can see this if you place some NSLog .. into your code. This means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being executed for nearly 30 seconds. This is useful code if you must sometimes check something. The doc.. The BG Task is limited to 600 seconds. This is the exact minimum time of the VoIP minimumtime setKeepAliveTimeout 600 . So THIS code leads into infinite execution in background Header UIBackgroundTaskIdentifier bgTask Code if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention you're doing something related to destruction call the super class's method last. This makes sure that you can rely on the state of the object throughout the execution of your method. Finally take any other case on a case by case basis. For instance if you're handling an event you probably want to deal with the event first and..
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 on what might be wrong in my code Both initTimer and checkUpdates are being called but only during for the background execution time 10 Mins . I want the app to update the location every n minutes forever . My app's UIBackgroundModes is set to location...
Detect when home button is pressed iOS http://stackoverflow.com/questions/10324596/detect-when-home-button-is-pressed-ios restore your application to its current state in case it is terminated later. If your application supports background execution this method is called instead of applicationWillTerminate when the user quits. void applicationWillTerminate UIApplication..
Debugging App When Launched by Push Notification http://stackoverflow.com/questions/1239000/debugging-app-when-launched-by-push-notification From what I can tell I am relatively new when the app launched from a push notification there is no way to link that execution to the debugger console etc... I am having a very difficult time trying to debug the code using UIAlertViews as there are..
iPhone: how to use performSelector:onThread:withObject:waitUntilDone: method? http://stackoverflow.com/questions/2584394/iphone-how-to-use-performselectoronthreadwithobjectwaituntildone-method never printed. What am I missing I tried to instantiate the thread with target and selector tried to wait for method execution completion waitUntilDone YES . Nothing helps. UPDATE I don't need this multithreading for separating costly operations to..
ApplicationWillTerminate in iOS 4.0 http://stackoverflow.com/questions/3139588/applicationwillterminate-in-ios-4-0 the applicationWillTerminate method of the application delegate. Your application cannot request additional background execution time from this method. So yes applicationWillTerminate will generally not be called very often in iOS 4. If you have to..
How do you trigger a block after a delay, like -performSelector:withObject:afterDelay:? http://stackoverflow.com/questions/4139219/how-do-you-trigger-a-block-after-a-delay-like-performselectorwithobjectafter let the block capture those variables from your local scope instead. int parameter1 12 float parameter2 144.1 Delay execution of my block for 10 seconds. dispatch_after dispatch_time DISPATCH_TIME_NOW 10 NSEC_PER_SEC dispatch_get_main_queue ^ NSLog..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events backgrounding enabled in my plist. All the code here is done in your AppDelegate if the iOS device allows background execution this Handler will be called void backgroundHandler NSLog @ ### VOIP backgrounding callback try to do sth. According to Apple.. into your code. This means that this short wakeup executes the code for a while. According to Apple we have 30 seconds execution time left. I assume that background code like threads are being executed for nearly 30 seconds. This is useful code if you.. This is the exact minimum time of the VoIP minimumtime setKeepAliveTimeout 600 . So THIS code leads into infinite execution in background Header UIBackgroundTaskIdentifier bgTask Code if the iOS device allows background execution this Handler will..
How do I correctly detect orientation change using javascript and Phonegap in IOS? http://stackoverflow.com/questions/5284878/how-do-i-correctly-detect-orientation-change-using-javascript-and-phonegap-in-io
How do I debug with NSLog(@“Inside of the iPhone Simulator”)? http://stackoverflow.com/questions/558568/how-do-i-debug-with-nsloginside-of-the-iphone-simulator of an Objective C object or the result of a method call. Make sure to click the Continue checkbox at the top right so execution continues after the log. Advantages of this over NSLog and printf It's on the fly. You don't have to recompile and restart..
How do I get a background location update every n minutes in my iOS application? http://stackoverflow.com/questions/6347503/how-do-i-get-a-background-location-update-every-n-minutes-in-my-ios-application avoid the background task being killed. This does work since location is one of the three allowed types of background execution . Note Did loose some time by testing this in the simulator where it doesn't work works fine on my phone. share improve..
What exactly does delegate do in xcode ios project? http://stackoverflow.com/questions/7215698/what-exactly-does-delegate-do-in-xcode-ios-project or when they're done typing Well the text control offers a delegate with methods that allow you to hook into the execution pipeline of the text control. It allows the text control to do everything for you and allows you to interject code where..
applicationWillTerminate when is it called and when not http://stackoverflow.com/questions/7818045/applicationwillterminate-when-is-it-called-and-when-not that applicationWillTerminate will ever get called. As the documentation says For applications that support background execution this method is generally not called when the user quits the application because the application simply moves to the background..
What are the advantages and disadvantages of using ARC? [closed] http://stackoverflow.com/questions/7888568/what-are-the-advantages-and-disadvantages-of-using-arc of using the new automatic reference counting ARC memory management style in an iOS project An ARC program's execution is nearly identical to well written MRC. That is the behavioral differences are often undetectable because both the order.. usage of reference counting e.g. a typical amount of autoreleases switching to ARC could really improve your program's execution times and peak memory usage. Can you choose not to use ARC when developing with the iOS 5.0 SDK Yes using CLANG_ENABLE_OBJC_ARC...
iOS 5: Curious about UIAppearance http://stackoverflow.com/questions/8257556/ios-5-curious-about-uiappearance at runtime but unfortunately the changes aren't taking place. You can use the appearance proxy at any point during execution. The changes won't be applied to the affected views until the next time those views have their layoutSubviews method invoked...
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention call the super class's method last. This makes sure that you can rely on the state of the object throughout the execution of your method. Finally take any other case on a case by case basis. For instance if you're handling an event you probably..
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