¡@
2014/10/15 ¤U¤È 10:15:03
iphone Programming Glossary: trackHow to use NSXMLParser to parse parent-child elements that have the same name http://stackoverflow.com/questions/2005448/how-to-use-nsxmlparser-to-parse-parent-child-elements-that-have-the-same-name This is a common problem with parsers like this one of type SAX where you have to manually keep track of the current depth of the XML tree you're in. The problem as always is that loading the entire tree..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code functionality. Here's the one I use it includes the file name and line number to make it easier to track down log statements. #define DEBUG_MODE #ifdef DEBUG_MODE #define DebugLog s ... NSLog @ p @ d @ self..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections asynchronous requests. iphone objective c cocoa cocoa touch share improve this question I track responses in an CFMutableDictionaryRef keyed by the NSURLConnection associated with it. i.e. connectionToInfoMapping.. @ receivedData and now I have an info dictionary of data for each connection that I can use to track information about the connection and the info dictionary already contains a mutable data object that..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int ... void someFuncWithInt NSInteger value ... But w in a function they're just using int to track a value for int i i something i ... int something something somethingElseThatsAnInt ... I've read been..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events us app dataman real time data usage id393282873 mt 8 It runs in the background and keeps track of the count of Cellular WiFi data you've used. I suspect that the developer is registering his app.. count of Cellular WiFi data you've used. I suspect that the developer is registering his app as tracking location changes but the location services icon isn't visible while the app is running which I thought..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation or check the main UIView's..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare never have exactly the same values but they can be somewhat the same. Am I at all on the right track here UPDATE I think that maybe Alis answer about using DTW could be the right way for me here. But I'm..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates true and the pin moves around the screen as the location is updated the standard callout tracks right along with the pin as if they're locked together. When using the custom callout solution above.. location. Of course I'd like to mimic the iOS standard and have the custom callout annotation track along with the pin. Here's the code I have so far that's successfully moving the annotation view but..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling..
How to use NSXMLParser to parse parent-child elements that have the same name http://stackoverflow.com/questions/2005448/how-to-use-nsxmlparser-to-parse-parent-child-elements-that-have-the-same-name c nsxmlparser xml parsing share improve this question This is a common problem with parsers like this one of type SAX where you have to manually keep track of the current depth of the XML tree you're in. The problem as always is that loading the entire tree in a DOM structure in memory can be impossible depending on..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code it's simple to define your own logging function with better functionality. Here's the one I use it includes the file name and line number to make it easier to track down log statements. #define DEBUG_MODE #ifdef DEBUG_MODE #define DebugLog s ... NSLog @ p @ d @ self NSString stringWithUTF8String __FILE__ lastPathComponent __LINE__..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received still valid during your emulator testing but is more likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool especially with the Leaks option. share..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections is most efficient for managing a class that handles multiple asynchronous requests. iphone objective c cocoa cocoa touch share improve this question I track responses in an CFMutableDictionaryRef keyed by the NSURLConnection associated with it. i.e. connectionToInfoMapping CFDictionaryCreateMutable kCFAllocatorDefault.. dictionaryWithObject NSMutableData data forKey @ receivedData and now I have an info dictionary of data for each connection that I can use to track information about the connection and the info dictionary already contains a mutable data object that I can use to store the reply data as it comes in. void connection..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int a function or returning a value from a function. NSInteger someFunc ... void someFuncWithInt NSInteger value ... But w in a function they're just using int to track a value for int i i something i ... int something something somethingElseThatsAnInt ... I've read been told that NSInteger is a safe way to reference an integer..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events found this application which does exactly that. http itunes.apple.com us app dataman real time data usage id393282873 mt 8 It runs in the background and keeps track of the count of Cellular WiFi data you've used. I suspect that the developer is registering his app as tracking location changes but the location services icon.. mt 8 It runs in the background and keeps track of the count of Cellular WiFi data you've used. I suspect that the developer is registering his app as tracking location changes but the location services icon isn't visible while the app is running which I thought was a requirement. Does anyone have any clues as to how..
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation or landscape mode. Is there a way to find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation or check the main UIView's bounds height and width but that seems kludgey. Is there..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare is how can I compare the two arrays in a smart way They will never have exactly the same values but they can be somewhat the same. Am I at all on the right track here UPDATE I think that maybe Alis answer about using DTW could be the right way for me here. But I'm not that smart apparently so if anyone could help me out..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates part 1 When you use a standard callout annotationview.canShowCallout true and the pin moves around the screen as the location is updated the standard callout tracks right along with the pin as if they're locked together. When using the custom callout solution above when my pin moves around after location updates the callout.. location updates the callout annotation stays in it's original location. Of course I'd like to mimic the iOS standard and have the custom callout annotation track along with the pin. Here's the code I have so far that's successfully moving the annotation view but not the custom callout annotation view core location broadcasts..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c question Let's start with retain and release autorelease is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an object you are telling it that you want..
Break on EXC_BAD_ACCESS in XCode? http://stackoverflow.com/questions/1622079/break-on-exc-bad-access-in-xcode For any EXC_BAD_ACCESS errors you are usually trying to send a message to a released object. The BEST way to track these down is use NSZombieEnabled . This works by never actually releasing an object but by wrapping it up as a zombie and.. again it still know what it was before you made the error and with this little bit of information you can usually backtrack to see what the issue was. It especially helps in background threads when the Debugger sometimes craps out on any useful..
How to use NSXMLParser to parse parent-child elements that have the same name http://stackoverflow.com/questions/2005448/how-to-use-nsxmlparser-to-parse-parent-child-elements-that-have-the-same-name this question This is a common problem with parsers like this one of type SAX where you have to manually keep track of the current depth of the XML tree you're in. The problem as always is that loading the entire tree in a DOM structure..
Is it true that one should not use NSLog() on production code? http://stackoverflow.com/questions/300673/is-it-true-that-one-should-not-use-nslog-on-production-code with better functionality. Here's the one I use it includes the file name and line number to make it easier to track down log statements. #define DEBUG_MODE #ifdef DEBUG_MODE #define DebugLog s ... NSLog @ p @ d @ self NSString stringWithUTF8String..
This class is not key value coding-compliant for the key http://stackoverflow.com/questions/3088059/this-class-is-not-key-value-coding-compliant-for-the-key
Adjusting the volume of a playing AVPlayer http://stackoverflow.com/questions/3268949/adjusting-the-volume-of-a-playing-avplayer meant to be this convoluted to simply manage volume levels I cannot use an AVAudioPlayer because I need to load iTunes tracks into the player. iphone objective c ios4 share improve this question You can change the volume while playing using.. and the volume you want to set is called volume the following code should do what you want NSArray audioTracks asset tracksWithMediaType AVMediaTypeAudio NSMutableArray allAudioParams NSMutableArray array for AVAssetTrack track in audioTracks.. asset tracksWithMediaType AVMediaTypeAudio NSMutableArray allAudioParams NSMutableArray array for AVAssetTrack track in audioTracks AVMutableAudioMixInputParameters audioInputParams AVMutableAudioMixInputParameters audioMixInputParameters..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received testing but is more likely to be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool..
Managing multiple asynchronous NSURLConnection connections http://stackoverflow.com/questions/332276/managing-multiple-asynchronous-nsurlconnection-connections that handles multiple asynchronous requests. iphone objective c cocoa cocoa touch share improve this question I track responses in an CFMutableDictionaryRef keyed by the NSURLConnection associated with it. i.e. connectionToInfoMapping CFDictionaryCreateMutable.. data forKey @ receivedData and now I have an info dictionary of data for each connection that I can use to track information about the connection and the info dictionary already contains a mutable data object that I can use to store..
http://stackoverflow.com/questions/4445173/when-to-use-nsinteger-vs-int NSInteger someFunc ... void someFuncWithInt NSInteger value ... But w in a function they're just using int to track a value for int i i something i ... int something something somethingElseThatsAnInt ... I've read been told that NSInteger..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events that. http itunes.apple.com us app dataman real time data usage id393282873 mt 8 It runs in the background and keeps track of the count of Cellular WiFi data you've used. I suspect that the developer is registering his app as tracking location.. and keeps track of the count of Cellular WiFi data you've used. I suspect that the developer is registering his app as tracking location changes but the location services icon isn't visible while the app is running which I thought was a requirement...
How to apply “filters” to AVCaptureVideoPreviewLayer http://stackoverflow.com/questions/5156872/how-to-apply-filters-to-avcapturevideopreviewlayer the video in realtime for display. In this application explained in detail here I was using color based filtering to track objects in the camera view but others have modified this code to do some neat video processing effects. All GPU based filters..
iPhone: Incrementing the application badge through a local notification http://stackoverflow.com/questions/5962054/iphone-incrementing-the-application-badge-through-a-local-notification
How to programmatically determine iPhone interface orientation? http://stackoverflow.com/questions/634745/how-to-programmatically-determine-iphone-interface-orientation find the current orientation of the GUI in cases where the device is returning ambiguous information I suppose I could track orientation change events to remember the last portrait landscape orientation or check the main UIView's bounds height and..
Store orientation to an array - and compare http://stackoverflow.com/questions/6368618/store-orientation-to-an-array-and-compare a smart way They will never have exactly the same values but they can be somewhat the same. Am I at all on the right track here UPDATE I think that maybe Alis answer about using DTW could be the right way for me here. But I'm not that smart apparently..
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates annotationview.canShowCallout true and the pin moves around the screen as the location is updated the standard callout tracks right along with the pin as if they're locked together. When using the custom callout solution above when my pin moves.. stays in it's original location. Of course I'd like to mimic the iOS standard and have the custom callout annotation track along with the pin. Here's the code I have so far that's successfully moving the annotation view but not the custom callout..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c release autorelease is really just a special case once you understand the basic concepts. In Cocoa each object keeps track of how many times it is being referenced specifically the NSObject base class implements this . By calling retain on an..
Distance moved by Accelerometer http://stackoverflow.com/questions/6645126/distance-moved-by-accelerometer video. However the gyro mouse might work for your application see between 37 00 38 25 in the video. Similar questions track small movements of iphone with no GPS What is the real world accuracy of phone accelerometers when used for positioning..
What does the Xcode 4.2 preference “Support Wirelessly Connected Devices” do? http://stackoverflow.com/questions/7266391/what-does-the-xcode-4-2-preference-support-wirelessly-connected-devices-do useful to build to local testers with almost no effort on their part run instruments like Leaks or Zombies to help track down pesky issues while your test is still comfortable sitting at their desk instead of tethered to your machine . Edit..
Is there any open source OCR project for the iPhone out there? http://stackoverflow.com/questions/964181/is-there-any-open-source-ocr-project-for-the-iphone-out-there Thanks for any help. iphone open source sdk ocr tesseract share improve this question I think you're on the right track with that link. One recommendation though I'd recommend talking to an OCR expert. My use of Tesseract for document scanning..
http://stackoverflow.com/questions/1710781/uiscrollview-infinite-scroll Scroll Does anyone have any idea how I can go about creating an infinite scroll. A good example of this is in the 4 Track iPhone app. There are scrollable wheels above the track numbers and below the time indicator. I'm assuming it's using UIScrollView..
Low memory with 640Kb of live bytes? http://stackoverflow.com/questions/2865786/low-memory-with-640kb-of-live-bytes the ObjectAlloc one you should be able to track what is triggering memory spikes within your application. Select the Track inspection head option for the Memory Monitor below the Instruments list click on Memory Manager first to activate the tool..
AVAsset and AVAssetTrack - Track Management in IOS 4.0 http://stackoverflow.com/questions/3298290/avasset-and-avassettrack-track-management-in-ios-4-0 and AVAssetTrack Track Management in IOS 4.0 The new features list of IOS 4.0 says that AV Foundation framework has got Media asset management.. and AVAssetTrack Track Management in IOS 4.0 The new features list of IOS 4.0 says that AV Foundation framework has got Media asset management.. in IOS 4.0 The new features list of IOS 4.0 says that AV Foundation framework has got Media asset management Track management Media editing and Metadata management for media items. What do they mean by this Using track management and media..
UILongPressGestureRecognizer gets called twice when pressing down http://stackoverflow.com/questions/3319591/uilongpressgesturerecognizer-gets-called-twice-when-pressing-down whenever a finger moves and it ends UIGestureRecognizerStateEnded when any of the fingers are lifted. Now You Can Track The State Like This void handleLongPress UILongPressGestureRecognizer sender if sender.state UIGestureRecognizerStateEnded..
iPhone - How to build a roulette like wheel? http://stackoverflow.com/questions/3802671/iphone-how-to-build-a-roulette-like-wheel image so for a touch event at x y the current angle would be atan2 y cy x cx where cx cy is the centre of the wheel. Track changes in this angle for the delta so you know how much to rotate the wheel by when the user's finger moves. Snapping the..
iOS Multi-Tasking Track GPS Location http://stackoverflow.com/questions/4400628/ios-multi-tasking-track-gps-location Multi Tasking Track GPS Location I was just wondering if it was possible to make an iOS app that would track your location via GPS while it..
Extracting ID3 tags from MP3 over HTTP Live Streaming http://stackoverflow.com/questions/5085677/extracting-id3-tags-from-mp3-over-http-live-streaming including printing out self.musicPlayer.currentItem.asset.commonMetadata as well as iterating over each of the AVAssetTrack instances and printing out their metadata. for AVAssetTrack track in self.musicPlayer.currentItem.asset.tracks NSLog @ Media.. as well as iterating over each of the AVAssetTrack instances and printing out their metadata. for AVAssetTrack track in self.musicPlayer.currentItem.asset.tracks NSLog @ Media type of track @ track.mediaType NSLog @ Track metadata.. AVAssetTrack track in self.musicPlayer.currentItem.asset.tracks NSLog @ Media type of track @ track.mediaType NSLog @ Track metadata @ track.commonMetadata What's interesting is that the asset always says it has 2 tracks. When I print out their..
Alternative to Singleton in Objective-C for better application design http://stackoverflow.com/questions/5912541/alternative-to-singleton-in-objective-c-for-better-application-design are theory based without a single line of code Let's use the Google Analytics iOS SDK as an example Initialization GANTracker sharedTracker startTrackerWithAccountID @ UA 0000000 1 dispatchPeriod kGANDispatchPeriodSec delegate nil Track page.. without a single line of code Let's use the Google Analytics iOS SDK as an example Initialization GANTracker sharedTracker startTrackerWithAccountID @ UA 0000000 1 dispatchPeriod kGANDispatchPeriodSec delegate nil Track page view GANTracker.. single line of code Let's use the Google Analytics iOS SDK as an example Initialization GANTracker sharedTracker startTrackerWithAccountID @ UA 0000000 1 dispatchPeriod kGANDispatchPeriodSec delegate nil Track page view GANTracker sharedTracker..
http://stackoverflow.com/questions/9139138/track-data-usage data usage I am trying to track the data usage from the user of the iPhone. But I'am loose I found this NSArray getDataCounters..
|