2014/10/15 下午 10:12:48

iphone Programming Glossary: poll

http://stackoverflow.com/questions/1391589/cllocation-speed

this question How about the code below which works from the delegate method. Alternatively if you did want to poll then keep your previous location and check the distance changed from the last poll and use the manual method also shown.. Alternatively if you did want to poll then keep your previous location and check the distance changed from the last poll and use the manual method also shown below to calculate the speed. Speed is calculated provided in m s so multiply by 3.6..

When to use restoreCompletedTransactions for in-app purchases?

http://stackoverflow.com/questions/1757467/when-to-use-restorecompletedtransactions-for-in-app-purchases

question. It looks like restoreCompletedTransactions is something the app has to actively decide when to call to poll for all the purchases the customer has already made. From what I can tell the method is designed to retrieve purchases that.. or reset. Concerns What's not clear to me is how to automatically detect this condition i.e. how to decide when to poll for missing purchases in a reliable way. I don't want to screw this up and risk denying a customer access to functionality..

Autocomplete search example for iPhone

http://stackoverflow.com/questions/2077404/autocomplete-search-example-for-iphone

answer will likely help you. If you are using a UISearchDisplayController you would not need to use an NSTimer to poll the search field as changes to the search field will fire delegate methods for you. In those delegate methods you may apply..

UIDevice currentDevice's “orientation” always null

http://stackoverflow.com/questions/2461314/uidevice-currentdevices-orientation-always-null

has no effect. DidRotateToInterfaceOrientation etc events are working fine but I need to be able to poll the device orientation arbitrarily. How can I fix do this The long story I have a tab application with a navigation controller.. to be checked whenever the view appears as the orientation change could have occurred elsewhere so I was hoping to poll the orientation state whenever this view appears. iphone objective c orientation uidevice interface orientation share..

Play multiple audio files using AVAudioPlayer

http://stackoverflow.com/questions/2586284/play-multiple-audio-files-using-avaudioplayer

# 0... so if you have 5 tracks track01 would be index 0 track02 would be index 1 and so on. If you want to quickly poll your array to see what's in it you can add this bit of code int i 0 for i i soundsList count 1 i NSLog @ soundsList contains..

COMET (server push to client) on iPhone

http://stackoverflow.com/questions/337985/comet-server-push-to-client-on-iphone

the server by say updating their Address.. the feedback should be pushed from the server to any clients keeping a live poll to the server. The buzzword for this is COMET I suppose. I know there is DWR out there for web browser applications so I'm..

How to make a chat system on iPhone?

http://stackoverflow.com/questions/3380851/how-to-make-a-chat-system-on-iphone

room at any one time and the most basic question is how to efficiently check for new messages Would I need to simply poll the server periodically Or is there a way I could trigger an event on the phone from the server whenever there is some new.. trigger an event on the phone from the server whenever there is some new content to pay attention to If having to poll all the time I worry about the resulting lag as each participant will have to wait longer for others before they can post.. to use servers for LAMP or at least open source implementations . Note that the iOS4 multitasking API doesn't support polling in the background so your only other option should be push notifications. If you're new to push notifications you can..

iPhone - Backgrounding to poll for events

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

Backgrounding to poll for events For quite a while I'd been looking into a way in my iPhone app to poll every X minutes to check the data counters... Backgrounding to poll for events For quite a while I'd been looking into a way in my iPhone app to poll every X minutes to check the data counters. After much reading of the Background Execution documentation and a few trial..

setKeepAliveTimeout and BackgroundTasks

http://stackoverflow.com/questions/4777499/setkeepalivetimeout-and-backgroundtasks

and BackgroundTasks I've a big headache with the topic. I'm working on an application that needs to poll a webserver regularly in order to check for new data. Based on the returned information I wish to push a local notification..

How to Sync iPhone Core Data with web server, and then push to other devices?

http://stackoverflow.com/questions/5035132/how-to-sync-iphone-core-data-with-web-server-and-then-push-to-other-devices

server the server pushes all of those change sets to the other devices registered with the server using some sort of polling system. I thought to use Apple's Push services but apparently according to the comments this is not a workable system... to change in the initial table. All changes should be timestamped so that they can be merged. The device will have to poll the server without using up too much battery. The local devices will also need to update anything held in memory if when..

Using Objective C to read log messages posted to the device console

http://stackoverflow.com/questions/6144347/using-objective-c-to-read-log-messages-posted-to-the-device-console

val tmpDict setObject string forKey keyString NSLog @ @ tmpDict aslresponse_free r Note that you need to poll ASL to read the latest messages. The code above will also fail when ran on the iPhone simulator but works just fine on an..

long polling in objective-C

http://stackoverflow.com/questions/6300756/long-polling-in-objective-c

polling in objective C I have an application that uses an API to get real time updates on the website. They use what they call.. C I have an application that uses an API to get real time updates on the website. They use what they call a long polling technique Long polling is a variation of the traditional polling technique and allows emulation of an information push.. that uses an API to get real time updates on the website. They use what they call a long polling technique Long polling is a variation of the traditional polling technique and allows emulation of an information push from a server to a client...