2014/10/15 下午 10:14:15

iphone Programming Glossary: sleep

http://stackoverflow.com/questions/2573072/coredata-store-images-to-db-or-not

NSString server withSecret NSString secret inFormat FlickrFetcherPhotoFormat format #if TEST_HIGH_NETWORK_LATENCY sleep 1 #endif NSString formatString switch format case FlickrFetcherPhotoFormatSquare formatString @ s break case FlickrFetcherPhotoFormatLarge..

streaming video FROM an iPhone

http://stackoverflow.com/questions/3444791/streaming-video-from-an-iphone

used for HTTP live streaming without any server side processing. The gap between data transfers allow the antennas to sleep in between if the connection is fast enough saving battery life. Conversely if the connection is slow so upload is slower..

applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. applicationDidEnterBackground

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

What's the difference Which is the proper delegate to implement for when an application is going to sleep and you want to prep it to cleanup and save data applicationWillResignActive vs. applicationDidEnterBackground What's the.. appreciate your input on best practices to follow on choosing which delegates to implement for waking up and going to sleep as well as considering events like being interrupted by SMS calls. Thanks iphone objective c share improve this question..

iPhone SDK 4 AVFoundation - How to use captureStillImageAsynchronouslyFromConnection correctly?

http://stackoverflow.com/questions/3847140/iphone-sdk-4-avfoundation-how-to-use-capturestillimageasynchronouslyfromconnec

video output is running the image output never seems to complete until you pause the session by putting the phone to sleep then you seem to get a single image out . AVCaptureStillImageOutput only seems to work sensibly with AVCaptureSessionPresetPhoto..

Subclassing NSOperation to be concurrent and cancellable

http://stackoverflow.com/questions/3859631/subclassing-nsoperation-to-be-concurrent-and-cancellable

didChangeValueForKey @ isExecuting if _isCancelled YES NSLog @ OPERATION CANCELED else NSLog @ Operation started. sleep 1 self finish void finish NSLog @ operationfinished. self willChangeValueForKey @ isExecuting self willChangeValueForKey..

How should I architect my iPhone app to talk to my website?

http://stackoverflow.com/questions/3943597/how-should-i-architect-my-iphone-app-to-talk-to-my-website

this is your first iPhone app so I suggest you don't use it. Yet. Do not forget about multitasking your app can go to sleep in the middle of download you need to cancel connections and cleanup your update mechanisms. On app's wake up you might..

What happens to an iPhone app when iPhone goes into stand-by mode?

http://stackoverflow.com/questions/411436/what-happens-to-an-iphone-app-when-iphone-goes-into-stand-by-mode

analogous to frontmost in Mac OS X. When you lock the device your app deactivates but the device may or may not go to sleep iPhone OS rarely sleeps if the device is connected to main power i.e. via USB . It can sleep if running on battery however... in Mac OS X. When you lock the device your app deactivates but the device may or may not go to sleep iPhone OS rarely sleeps if the device is connected to main power i.e. via USB . It can sleep if running on battery however. A short time after.. may or may not go to sleep iPhone OS rarely sleeps if the device is connected to main power i.e. via USB . It can sleep if running on battery however. A short time after the screen is locked 20 seconds according to Oliver Drobnik the device..

iPhone - Backgrounding to poll for events

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

are still being executed while background self doSomething This is where you can do your X minutes in seconds here 10 sleep 10 And never call the expirationHandler so your App runs until the system terminates our process app endBackgroundTask.. 0 ^ while 1 NSLog @ BGTime left f UIApplication sharedApplication .backgroundTimeRemaining self doSomething sleep 1 void applicationDidEnterBackground UIApplication application BOOL backgroundAccepted UIApplication sharedApplication.. 0 ^ while 1 NSLog @ BGTime left f UIApplication sharedApplication .backgroundTimeRemaining self doSomething sleep 1 After your app has timed out the VoIP expirationHandler will be called where you simply restart a long running task...

Keep iphone active while running program

http://stackoverflow.com/questions/493495/keep-iphone-active-while-running-program

running Any idea iphone objective c share improve this question This code will prevent your iPhone from going to sleep while your app is running avoid sleeping when this application is running application.idleTimerDisabled YES share improve..

Turning an iPhone or iPod into a wireless webcam

http://stackoverflow.com/questions/5258696/turning-an-iphone-or-ipod-into-a-wireless-webcam

Convert encode this to the right format. Stream the data. Prevent the phone from locking itself and going into deep sleep. The first one is fairly simple and Apple has as always provided good documentation and examples API link . Make sure you..

GCD, Threads, Program Flow and UI Updating

http://stackoverflow.com/questions/7290931/gcd-threads-program-flow-and-ui-updating

id obj simulate 5 seconds of work I added a slider to the form I can slide it back and forth during the 5 sec. sleep 5 self performSelectorOnMainThread @selector workDone withObject nil waitUntilDone YES void workDone id obj self feedbackLabel..

Internal clock in iPhone background mode

http://stackoverflow.com/questions/9564823/internal-clock-in-iphone-background-mode

xcode share improve this question Update Sorry to say my original answer isn't correct. When the device goes to sleep can happen sometime after it's locked the internal CPU clock stops ticking and mach_absolute_time won't update either. Theoretically.. won't update either. Theoretically it will return the exact same value if you call it right before the device went to sleep and after it awakes. The best available way I know of to check for date changes is kern.boottime it holds the boot time..