multitasking
iphone : How does multitasking work on iPhone 4
I am new in iPhone application and have no iPhone to play with. I have looked online about iPhone 4 has multitasking but previous iPhone doesn\'t. In previous version iPhone, is there no chance of hav[详细]
2023-04-06 16:19 分类:问答iOS application closes when entered into foreground from background
I have a problem when my application enters foreground from background. It crashes when entering foreground. I am not able to figure out where it is crashing as it is not giving any warning in console[详细]
2023-04-06 07:00 分类:问答iPhone - deactivate CLLocationManager events when in background mode
I have an app that uses the CLLocationManager to receive location and heading updates. When the app in sent to background mode, the CLLocationManager still receive events (catched in the debugger whil[详细]
2023-04-06 02:52 分类:问答iOS Reset/Restart Application from UIButton
I have a simple iOS app that I am developing that needs to be \"restarted\" or \"reset\" after a user performs a certain touch action and a \"reset\" button appears. The workflow of the app goes somet[详细]
2023-04-05 02:07 分类:问答How should I handle working with celeryd_multi from code?
So far, I\'ve been working only with python manage.py celeryd, starting it like开发者_C百科 this:[详细]
2023-04-03 15:28 分类:问答Techniques for keeping iOS NSTimers from being killed in background
Relatively new to obj-c and iOS but I\'ve created a little app that is built around 4 simple, stopwatch-style timers. The user starts up a timer, it starts counting and they go on with their life. Whe[详细]
2023-04-02 08:38 分类:问答Is there a way to always use the default.png when returning from background?
In one of my apps when returning from background I get a non consistent behavior: Sometimes I get the default.png and sometimes I get a snapshot of the last screen which the app was in.[详细]
2023-03-31 06:59 分类:问答How to make a persistent (multitasking-aware) stopwatch?
I am using NSTimer to make a stopwatch. I would like it to continue working if the user switches to a different app, but right now it only works when the app is running. I figure that this is probably[详细]
2023-03-31 03:41 分类:问答Questions about code using Task queue for parallel web gets
So I\'ve got this code to drill down into a heirarchy of XML documents from a REST api.I posted earlier to get advice on how to make it recursive, then I went ahead and made it parralel.[详细]
2023-03-28 03:05 分类:问答iPhone: Run in the background indefinitely
I am looking for a way to have an iPhone application run in the background indefinitely. This app will not be 开发者_开发问答using location services or VoIP, but instead be preforming a specific task[详细]
2023-03-27 07:57 分类:问答