2014/10/15 下午 10:13:08

iphone Programming Glossary: rates

http://stackoverflow.com/questions/10324596/detect-when-home-button-is-pressed-ios

to the background state. Use this method to pause ongoing tasks disable timers and throttle down OpenGL ES frame rates. Games should use this method to pause the game. void applicationDidEnterBackground UIApplication application Use this method..

Real-time Pitch Shifting on the iPhone

http://stackoverflow.com/questions/1100495/real-time-pitch-shifting-on-the-iphone

How to assign values from NSMutableDictionary to NSArray

http://stackoverflow.com/questions/12425923/how-to-assign-values-from-nsmutabledictionary-to-nsarray

returns null . Here my array returns null value NSMutableDictionary tempDict1 NSArray arr tempDict1 valueForKey @ rates componentsSeparatedByString @ code void connectionDidFinishLoading NSURLConnection connection connection release NSString.. NSString alloc initWithData responseData encoding NSUTF8StringEncoding self.responseData nil NSArray latestrates responseString JSONValue objectForKey @ rates responseString release values responseString JSONValue array NSMutableArray.. encoding NSUTF8StringEncoding self.responseData nil NSArray latestrates responseString JSONValue objectForKey @ rates responseString release values responseString JSONValue array NSMutableArray alloc init array values valueForKey @ rates..

iOS Device & Bluetooth

http://stackoverflow.com/questions/14561579/ios-device-bluetooth

data transfer rate between an external Bluetooth device and an iPhone iPad 4S onwards . I read that enchanced data rates in BT3.0 were 24Mbs can the iPhone support this What is the maximum data possible using BT4.0 LTE Thanks guys iphone ipad..

An iPhone library for shape recognition via the camera

http://stackoverflow.com/questions/2093143/an-iphone-library-for-shape-recognition-via-the-camera

Proper AVAudioRecorder Settings for Recording Voice?

http://stackoverflow.com/questions/2149280/proper-avaudiorecorder-settings-for-recording-voice

are in the middle range of human hearing. Recorded speech is easily understood even when digitized with very low data rates. You can stomp all over a voice recording yet still have a useful file. Therefore your ultimate use for these recordings.. Unless you're after a high fidelity recording you don't need this high of a rate but you don't want to use arbitrary rates. Most audio software can only understand rates at specific steps like 32 kHz 24 kHz 16 kHz or 12 kHz. Your number of channels.. you don't need this high of a rate but you don't want to use arbitrary rates. Most audio software can only understand rates at specific steps like 32 kHz 24 kHz 16 kHz or 12 kHz. Your number of channels is set to 2 for stereo. Unless your using..

applicationWillEnterForeground vs. applicationDidBecomeActive, applicationWillResignActive vs. applicationDidEnterBackground

http://stackoverflow.com/questions/3712979/applicationwillenterforeground-vs-applicationdidbecomeactive-applicationwillre

pressed or user switches apps. docs say you should pause ongoing tasks disable timers pause a game reduce OpenGL frame rates applicationDidEnterBackground is called after applicationWillResignActive docs say you should release shared resources save..

Open two tables from one SQLite db in one iPhone Class?

http://stackoverflow.com/questions/4017160/open-two-tables-from-one-sqlite-db-in-one-iphone-class

return the row of the query table achemical NSString stringWithFormat @ s char sqlite3_column_text statement 0 arates NSString stringWithFormat @ s char sqlite3_column_text statement 1 anotes NSString stringWithFormat @ s char sqlite3_column_text.. stringWithFormat @ s char sqlite3_column_text statement 2 Chemical chemic Chemical alloc initWithName achemical rates arates notes anotes list addObject chemic chemic release sqlite3_finalize statement void sel2 self createEditableCopyOfDatabaseIfNeeded.. stringWithFormat @ s char sqlite3_column_text statement 2 Chemical chemic Chemical alloc initWithName achemical rates arates notes anotes list addObject chemic chemic release sqlite3_finalize statement void sel2 self createEditableCopyOfDatabaseIfNeeded..

OpenGL ES 2.0 fragment shader to blur is slow and low quality

http://stackoverflow.com/questions/4355525/opengl-es-2-0-fragment-shader-to-blur-is-slow-and-low-quality

write a blur shader for the iPad. I have it working but I am not very happy with the results. I get very choppy frame rates and the blur looks like crap when blur amount is high. Any ideas on how to improve things Some sample output uniform sampler2D..

Applying Effect to iPhone Camera Preview “Video”

http://stackoverflow.com/questions/4893620/applying-effect-to-iphone-camera-preview-video

is reset after a sync operation on the output dispatch queue finishes. At this point I don't even mind the low frame rates but obviously we can't ship with the low memory crashes. Anyone have any idea how to take action to prevent the low memory..

iOS home button warning, is it possible?

http://stackoverflow.com/questions/7112723/ios-home-button-warning-is-it-possible

That are filled will comments about how you can use this method to pause tasks disable timers throttle down frame rates save data there is nothing about being able to delay query the user with an Are you sure message. This whole idea is rather..

iOS Stream Audio from one iOS Device to Another

http://stackoverflow.com/questions/8357514/ios-stream-audio-from-one-ios-device-to-another

errors as you work your way through the respective buffers or you'll get white noise or in the case of wrong sample rates audio that sounds slowed down or sped up. Note that SpeakHere runs two audio queues one for recording and one for playback...

Application windows are expected to have a root view controller at the end of application launch

http://stackoverflow.com/questions/9844626/application-windows-are-expected-to-have-a-root-view-controller-at-the-end-of-ap