2014/10/15 下午 10:12:33

iphone Programming Glossary: periodic

http://stackoverflow.com/questions/1707685/how-to-quit-an-iphone-app-nicely

You can read about the synchronize method in the Apple Documentation Because this method is automatically invoked at periodic intervals use this method only if you cannot wait for the automatic synchronization for example if your application is about..

Periodic iOS background location updates

http://stackoverflow.com/questions/19042894/periodic-ios-background-location-updates

handler executes and no further location updates are generated. How do I modify the above code in order to receive periodic location updates in the background indefinitely Update I'm targeting iOS 7 and there appears to be some evidence that background.. kCLLocationAccuracyBest self.locationManager setDistanceFilter kCLDistanceFilterNone All I'm doing is periodically toggling the accuracy to get a high accuracy coordinate every few minutes and because the locationManager hasn't been..

Correct way to poll server in background

http://stackoverflow.com/questions/4032829/correct-way-to-poll-server-in-background

may be two potential ways to do this Method 1 In applicationDidEnterBackground start a background task which does the periodic polling Method 2 Send your own app a UILocalNotification with no visible text to the user but which simply serves to wake..

srand(time(null)) on iPhone don't work =(

http://stackoverflow.com/questions/5912799/srandtimenull-on-iphone-dont-work

I using rand function. But it isn't enough random. I tried using srand with time Null . But my random generator was periodic. dev random isn't an answer because I need new random number each 0.1 sec. iphone objective c random srand share improve..

Problem while Working in background and Nstimer?

http://stackoverflow.com/questions/7190919/problem-while-working-in-background-and-nstimer

among these low power services is the significant location change service introduced in iOS 4. This service provides periodic location updates and can even wake up a background application or relaunch a terminated application to deliver them. For..

Distance to a location while user is in motion

http://stackoverflow.com/questions/8247820/distance-to-a-location-while-user-is-in-motion

You should also filter based on accuracy you probably don't want low accuracy locations. You won't get continous or periodic update the callback only occurs when the location has changed. Assuming the device has GPS and can see enough GPS satellites..