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2014/10/15 ¤U¤È 10:03:34
iphone Programming Glossary: alivehttp://stackoverflow.com/questions/11177066/how-to-use-ios-reachability Yes that is what i do in my projects i only have 1 instance of a download manager class and this class has the only alive instance of Reachability Or should I check myself the reachability status before every network request You can do that without..
NSOperations or NSThread for bursts of smaller tasks that continuously cancel each other? http://stackoverflow.com/questions/2840406/nsoperations-or-nsthread-for-bursts-of-smaller-tasks-that-continuously-cancel-ea alloc init SearchWebService searchObj SearchWebService alloc init NSRunLoop currentRunLoop run keeps it alive searchObj release pool release But I can't figure out how to access the searchFor method in the searchObj object so the..
NSNotificationCenter trapping and tracing all NSNotifications http://stackoverflow.com/questions/3725234/nsnotificationcenter-trapping-and-tracing-all-nsnotifications my experience does indicate that something gets called after its deallocation. My observing object however still is alive its deallocator has not been called yet . Next thing I tried was setting a breakpoint towards NSNotificationCenter postNotification..
How to keep an iPhone app running on background fully operational http://stackoverflow.com/questions/3762200/how-to-keep-an-iphone-app-running-on-background-fully-operational operational doesn't matter the impact on battery's life. That way the user of my app can select from settings to keep alive the app whenever he wants and just for the amount of time he wish. e.g if he is waiting for something that requires the.. he is waiting for something that requires the app to be running after receiving the messages he can turn off the keep alive functionality. I don't know if this is possible but I had read some post that say so but unfortunately they didn't say how.. UPDATE In this tutorial I found that Acrobits has two apps on the Apple Store that can force the application to stay alive and awake in the background . So there is a way to do this iphone objective c ios4 background process keep alive share..
setKeepAliveTimeout and BackgroundTasks http://stackoverflow.com/questions/4777499/setkeepalivetimeout-and-backgroundtasks you're just supposed to send whatever ping packet you need to send to your service to keep the network connection alive and not timed out. After 30 seconds regardless of starting new background tasks if your application is still executing you're..
Repeating NSTimer, weak reference, owning reference or iVar? http://stackoverflow.com/questions/4945028/repeating-nstimer-weak-reference-owning-reference-or-ivar and simply release it you'll end up with where you leak the object and the timer because the runloop keeps the timer alive which in turn keeps an owning reference to your object. This can be avoided if yourObject is only ever owned by one single..
Objective-C autorelease memory management http://stackoverflow.com/questions/5192308/objective-c-autorelease-memory-management to stay valid until at least the end of the scope that it was called in. If you want to ensure that it stays alive longer then you should retain it remembering to release it again when you're finished with it. share improve this answer..
unrecognized selector sent to instance http://stackoverflow.com/questions/5637203/unrecognized-selector-sent-to-instance iphone cocoa touch share improve this question Is the whatever view controller this code is from still alive when the button is tapped An error like this unrelated object UIImageView in this case usually means you have a pointer..
How can an iOS app keep a TCP connection alive indefinitely while in the background? http://stackoverflow.com/questions/5840365/how-can-an-ios-app-keep-a-tcp-connection-alive-indefinitely-while-in-the-backgro can an iOS app keep a TCP connection alive indefinitely while in the background An iPhone app connecting to a remote server via TCP. The use scenarios are app user.. if app does not send data to server for 30 minutes server will close the connection. I want to keep the connection alive for 120 minutes even if user does nothing. Case 1 if app is in foreground I can use timer to send some do nothing data to.. don't wan to show alert or something to interrupt user he is away or playing games . I just wanna keep the connection alive for a longer period and when user comes back to the app he found out that the connection will be still alive and be happy..
How to Maintain VOIP socket connection in background? http://stackoverflow.com/questions/5987495/how-to-maintain-voip-socket-connection-in-background handler ProcessConnectionError break default break do nothing To make server aware that client is still alive we send the ping command to server every 10 minutes so the KeepAlive handler is set to 600. You can use other values to..
http://stackoverflow.com/questions/8146253/animate-change-of-view-controllers-without-using-navigation-controller-stack-su the current viewController with the viewController owning the new view. At any time only the current viewController is alive e.g. alloc'ed . The code can be easily modified to work differently the key point is the animated transition and the single..
Keeping an app alive in background unlimited (for a Cydia app) http://stackoverflow.com/questions/8626928/keeping-an-app-alive-in-background-unlimited-for-a-cydia-app an app alive in background unlimited for a Cydia app I don't mind using private API's or anything of the kind that Apple doesn't like..
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