2014/10/15 下午 10:10:34

iphone Programming Glossary: invalidated

http://stackoverflow.com/questions/1031554/nstimer-doesnt-stop

is being called. But after a certain amount of switching between views the timer continues firing even after it was invalidated. What's the problem Here is my code NSTimer timer void viewWillAppear BOOL animated super viewWillAppear animated timer..

Apple Push Notification Feedback Service - how frequently does it check

http://stackoverflow.com/questions/2882293/apple-push-notification-feedback-service-how-frequently-does-it-check

from your device and then send a push notification to it you would expect to have the device token rejected and the invalidated device token should appear on the feedback service. However if this was the last push enabled app on the device it will..

How to check if NSTimer has been already invalidated

http://stackoverflow.com/questions/368253/how-to-check-if-nstimer-has-been-already-invalidated

to check if NSTimer has been already invalidated I have a NSTimer object that I need to invalidate if a user taps on a button or if they exit a view. So I have myNSTimer.. . If user taps on a button and then exists a view the app throws an exception because myNSTimer has already been invalidated. What I need to do in the viewWillDisappear method is check if the myNSTimer has been invalidated or not. How do I do that.. has already been invalidated. What I need to do in the viewWillDisappear method is check if the myNSTimer has been invalidated or not. How do I do that I've tried if myNSTimer nil myNSTimer invalidate but that didn't work. iphone objective c cocoa..

Using NSTimer in a Loop

http://stackoverflow.com/questions/4590524/using-nstimer-in-a-loop

timer the loop iterates through and several timers are created. How can I form a loop that waits until the timer has invalidated IBAction startCountdown id sender NSNumber rounds NSNumber alloc initWithInt sliderRounds.value for int i rounds.intValue..

Is there a way to make drawRect work right NOW?

http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now

know that of course drawRect will not actually run until all processing is finished. setNeedsDisplay flags a view as invalidated and the OS in a word waits until all processing is done. This can be infuriating in the common situation where you want..

Mysterious “progressive slowing” problem in run loop / drawRect

http://stackoverflow.com/questions/4786754/mysterious-progressive-slowing-problem-in-run-loop-drawrect

CGLayer are great for repeatedly painting because they cache their rendering into a flat image. The cache is invalidated when additional operations are appended to the context. When this happens the CGLayer is rendered again. The slowdown is..

Question about NSTimer and retain

http://stackoverflow.com/questions/4914906/question-about-nstimer-and-retain

be released once when fired because it'll be unscheduled from the run loop . self will be released when the timer is invalidated or released you shouldn't have to care . So you have two retain counts to account for. The call to retain in the code above..

Repeating NSTimer, weak reference, owning reference or iVar?

http://stackoverflow.com/questions/4945028/repeating-nstimer-weak-reference-owning-reference-or-ivar

object make the property retain the timer as that is the only way to avoid crashes caused by clients that directly invalidated the timer they accessed and provide your own setter. Rescheduling a timer is in my opinion not a good reason to break encapsulation..

Apple Push Notification

http://stackoverflow.com/questions/5317061/apple-push-notification

i'm still getting the “The executable was signed with invalid entitlements.” error

http://stackoverflow.com/questions/5333034/im-still-getting-the-the-executable-was-signed-with-invalid-entitlements-err

facebook-ios-sdk logout question

http://stackoverflow.com/questions/6226950/facebook-ios-sdk-logout-question

exactly the same steps done in 2. I realize that when I call logout I do really log out from Facebook accessToken is invalidated from my App scope not from the global scope Facebook App Mobile Safari . In 5. when I try to log in again the application..

iPhone crash- Message sent to deallocated instance

http://stackoverflow.com/questions/9399669/iphone-crash-message-sent-to-deallocated-instance

that if it runs out it invalidates itself which is why I am using the IF statement to check if it has already been invalidated but it is not working . So I think the timer has already invalidated itself when this crash happens but how do I check if.. the IF statement to check if it has already been invalidated but it is not working . So I think the timer has already invalidated itself when this crash happens but how do I check if it is already invalidated EDIT Ok I marked the correct answer below... . So I think the timer has already invalidated itself when this crash happens but how do I check if it is already invalidated EDIT Ok I marked the correct answer below. I do not know if there is actually a reason why the code gets by the IF statements..