2014/10/15 下午 10:12:55
iphone Programming Glossary: probablyDetect the specific iPhone/iPod touch model [duplicate] http://stackoverflow.com/questions/1108859/detect-the-specific-iphone-ipod-touch-model SDK I am making a game that utilizes the peer to peer bluetooth capabilities of the iPhone and probably the iPod touch 2nd generation . However to stop the users from trying to play a multiplayer on an iPod.. c ios p2p devices share improve this question Most complete UIDevice Hardware category probably is http github.com erica uidevice extension by Erica Sadun UIDevice currentDevice platformType ex UIDevice4GiPhone..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos and matching against the first x pixels of each image. This seems a bit over the top though and probably quite slow. Any suggestions iphone cocoa touch gps uiimagepickercontroller exif share improve this..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone uploadDidSucceed Uploader Private connection didFailWithError Called when the upload failed probably due to a lack of network connection . Results None Side effects None void connection NSURLConnection..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript you need take whatever action is appropriate and return NO to cancel the navigation. It's probably best if you defer any lengthy processing using some flavor of performSelector . share improve this..
What does the -all_load linker flag do? http://stackoverflow.com/questions/2906147/what-does-the-all-load-linker-flag-do one help me with that Thanks iphone objective c gcc linker share improve this question It is probably related to this technical note http developer.apple.com mac library qa qa2006 qa1490.html IMPORTANT..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk wiki to bind together a number of other Q A's I've seen here on SO. If you're here you've probably installed the final version of Xcode 3.2.3 with iPhone SDK 4 download link reg reqd and then encountered..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework on the imaginary side of the split complex form and even reals in stored on the real side. this is probably the hardest thing to understand. We are using the same container A all the way through the process... calculates everything that can be precalculated. note that if you are doing this in real code you probably want to do this once when the app loads and call the complimentary release function once when it quits...
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 using Apple's workaround to the bugs in lipo . NOTE the install instructions have changed I can probably simplify this by changing the script in future but don't want to risk it now copy headers section now..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell design and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008..
parsing HTML on the iPhone [closed] http://stackoverflow.com/questions/405749/parsing-html-on-the-iphone release Known issues As hpple is a wrapper over XPathQuery which is another wrapper this option probably is not the most efficient. If performance is an issue in your project I recommend to code your own lightweight..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root it from the first. Not to mention all the book keeping when selecting a different account would probably be a pain. How should I implement this the Right Way ^1 The tab bar controller needs to be subclassed..
iPhone/iOS JSON parsing tutorial [closed] http://stackoverflow.com/questions/5813077/iphone-ios-json-parsing-tutorial
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown ARC allows for declaring consumed parameters and if the method consumes the parameter you'll probably eventually send a message to a zombie and crash. There are ways to work around this with bridged casting..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons basis. Xcode unfortunately makes this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as.. release them as well so it'll never matter. If I were teaching a new class in Cocoa today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention.. today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention the memory management naming rules while discussing KVC naming. With ARC I believe you..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud same time imageNamed has gotten a lot of use not for the cache but for the convenience which has probably magnified the problem more than it should have been. whilst warning that On the speed front there is..
Detect the specific iPhone/iPod touch model [duplicate] http://stackoverflow.com/questions/1108859/detect-the-specific-iphone-ipod-touch-model Duplicate Determine device iPhone iPod Touch with iPhone SDK I am making a game that utilizes the peer to peer bluetooth capabilities of the iPhone and probably the iPod touch 2nd generation . However to stop the users from trying to play a multiplayer on an iPod 1st gen and iPhone 2G I need to check for the specific device.. this have been lately approved in the AppStore. iphone objective c ios p2p devices share improve this question Most complete UIDevice Hardware category probably is http github.com erica uidevice extension by Erica Sadun UIDevice currentDevice platformType ex UIDevice4GiPhone UIDevice currentDevice platformString ex @ iPhone..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos that was selected. I'm considering making a table of hashes and matching against the first x pixels of each image. This seems a bit over the top though and probably quite slow. Any suggestions iphone cocoa touch gps uiimagepickercontroller exif share improve this question Have you took a look at this exif iPhone library..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone p n __func__ self connection release self uploadSucceeded uploadDidSucceed Uploader Private connection didFailWithError Called when the upload failed probably due to a lack of network connection . Results None Side effects None void connection NSURLConnection connection IN didFailWithError NSError error IN NSLog..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript
What does the -all_load linker flag do? http://stackoverflow.com/questions/2906147/what-does-the-all-load-linker-flag-do use this flag but my code compiles even without it. Can some one help me with that Thanks iphone objective c gcc linker share improve this question It is probably related to this technical note http developer.apple.com mac library qa qa2006 qa1490.html IMPORTANT For 64 bit and iPhone OS applications there is a linker bug..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk SDK missing&rdquo can't see other SDKs I created this community wiki to bind together a number of other Q A's I've seen here on SO. If you're here you've probably installed the final version of Xcode 3.2.3 with iPhone SDK 4 download link reg reqd and then encountered one or both of these problems In your previously working..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework data is stored in split complex form with odd reals stored on the imaginary side of the split complex form and even reals in stored on the real side. this is probably the hardest thing to understand. We are using the same container A all the way through the process. so in the beginning we want to fill it with n real numbers... float A.imagp float malloc nOver2 sizeof float Next it pre calculates everything that can be precalculated. note that if you are doing this in real code you probably want to do this once when the app loads and call the complimentary release function once when it quits. DON'T do it lots of times it is expensive. let's say log2n..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 your library see below scroll to bottom now supports iPhone5 using Apple's workaround to the bugs in lipo . NOTE the install instructions have changed I can probably simplify this by changing the script in future but don't want to risk it now copy headers section now respects the build setting for the location of the public..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell rounded corners look a little funny but we moved to a different design and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__. All rights reserved. #import UIKit UIKit.h..
parsing HTML on the iPhone [closed] http://stackoverflow.com/questions/405749/parsing-html-on-the-iphone tag NSString content element content xpathParser release data release Known issues As hpple is a wrapper over XPathQuery which is another wrapper this option probably is not the most efficient. If performance is an issue in your project I recommend to code your own lightweight solution based on hpple and xpathquery library code...
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root table controller to a second nav controller seems to remove it from the first. Not to mention all the book keeping when selecting a different account would probably be a pain. How should I implement this the Right Way ^1 The tab bar controller needs to be subclassed so that the tab bar controller's navigation item at that level..
iPhone/iOS JSON parsing tutorial [closed] http://stackoverflow.com/questions/5813077/iphone-ios-json-parsing-tutorial
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c an instance of MyClass and assign it as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send it if appropriate. if self delegate respondsToSelector..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown problems with not declaring how that method consumes parameters. ARC allows for declaring consumed parameters and if the method consumes the parameter you'll probably eventually send a message to a zombie and crash. There are ways to work around this with bridged casting but really it'd be better to simply use the IMP and function..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons For non ARC code you can pass fno objc arc on a file by file basis. Xcode unfortunately makes this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look back. EDIT I've seen a couple of comments.. retain some things that you didn't mean it to retain but it'll release them as well so it'll never matter. If I were teaching a new class in Cocoa today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention the memory management naming rules while discussing KVC naming... it'll never matter. If I were teaching a new class in Cocoa today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention the memory management naming rules while discussing KVC naming. With ARC I believe you could actually become a decent beginning programmer without..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud would not be cleared even after a memory warning. At the same time imageNamed has gotten a lot of use not for the cache but for the convenience which has probably magnified the problem more than it should have been. whilst warning that On the speed front there is a general misunderstanding of what is going on. The biggest..
Detect the specific iPhone/iPod touch model [duplicate] http://stackoverflow.com/questions/1108859/detect-the-specific-iphone-ipod-touch-model iPod Touch with iPhone SDK I am making a game that utilizes the peer to peer bluetooth capabilities of the iPhone and probably the iPod touch 2nd generation . However to stop the users from trying to play a multiplayer on an iPod 1st gen and iPhone.. AppStore. iphone objective c ios p2p devices share improve this question Most complete UIDevice Hardware category probably is http github.com erica uidevice extension by Erica Sadun UIDevice currentDevice platformType ex UIDevice4GiPhone UIDevice..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos a table of hashes and matching against the first x pixels of each image. This seems a bit over the top though and probably quite slow. Any suggestions iphone cocoa touch gps uiimagepickercontroller exif share improve this question Have you..
How can I upload a photo to a server with the iPhone? http://stackoverflow.com/questions/125306/how-can-i-upload-a-photo-to-a-server-with-the-iphone uploadSucceeded uploadDidSucceed Uploader Private connection didFailWithError Called when the upload failed probably due to a lack of network connection . Results None Side effects None void connection NSURLConnection connection IN..
How to call Objective-C from Javascript? http://stackoverflow.com/questions/1662473/how-to-call-objective-c-from-javascript
What does the -all_load linker flag do? http://stackoverflow.com/questions/2906147/what-does-the-all-load-linker-flag-do without it. Can some one help me with that Thanks iphone objective c gcc linker share improve this question It is probably related to this technical note http developer.apple.com mac library qa qa2006 qa1490.html IMPORTANT For 64 bit and iPhone..
Install xCode 3.2.3 w/ iPhone SDK 4, get “Base SDK missing”, can't see other SDKs http://stackoverflow.com/questions/3161385/install-xcode-3-2-3-w-iphone-sdk-4-get-base-sdk-missing-cant-see-other-sdk I created this community wiki to bind together a number of other Q A's I've seen here on SO. If you're here you've probably installed the final version of Xcode 3.2.3 with iPhone SDK 4 download link reg reqd and then encountered one or both of..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework odd reals stored on the imaginary side of the split complex form and even reals in stored on the real side. this is probably the hardest thing to understand. We are using the same container A all the way through the process. so in the beginning.. float Next it pre calculates everything that can be precalculated. note that if you are doing this in real code you probably want to do this once when the app loads and call the complimentary release function once when it quits. DON'T do it lots..
Build fat static library (device + simulator) using Xcode and SDK 4+ http://stackoverflow.com/questions/3520977/build-fat-static-library-device-simulator-using-xcode-and-sdk-4 now supports iPhone5 using Apple's workaround to the bugs in lipo . NOTE the install instructions have changed I can probably simplify this by changing the script in future but don't want to risk it now copy headers section now respects the build..
How to customize the background/border colors of a grouped table view cell? http://stackoverflow.com/questions/400965/how-to-customize-the-background-border-colors-of-a-grouped-table-view-cell we moved to a different design and scrapped the custom backgrounds before I had a chance to fix it. Still this will probably be very helpful for you CustomCellBackgroundView.h Created by Mike Akers on 11 21 08. Copyright 2008 __MyCompanyName__...
parsing HTML on the iPhone [closed] http://stackoverflow.com/questions/405749/parsing-html-on-the-iphone release data release Known issues As hpple is a wrapper over XPathQuery which is another wrapper this option probably is not the most efficient. If performance is an issue in your project I recommend to code your own lightweight solution..
Tab bar controller inside a navigation controller, or sharing a navigation root view http://stackoverflow.com/questions/576764/tab-bar-controller-inside-a-navigation-controller-or-sharing-a-navigation-root seems to remove it from the first. Not to mention all the book keeping when selecting a different account would probably be a pain. How should I implement this the Right Way ^1 The tab bar controller needs to be subclassed so that the tab bar..
iPhone/iOS JSON parsing tutorial [closed] http://stackoverflow.com/questions/5813077/iphone-ios-json-parsing-tutorial
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c as the window's delegate MyClass myDelegate MyClass alloc init window setDelegate myDelegate On the NSWindow side it probably has code similar to this to see if the delegate responds to the windowDidMove message using respondsToSelector and send..
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown consumes parameters. ARC allows for declaring consumed parameters and if the method consumes the parameter you'll probably eventually send a message to a zombie and crash. There are ways to work around this with bridged casting but really it'd..
To ARC or not to ARC? What are the pros and cons? http://stackoverflow.com/questions/8760431/to-arc-or-not-to-arc-what-are-the-pros-and-cons on a file by file basis. Xcode unfortunately makes this much harder than it should be to do in practice. You should probably move non ARC code into a separate xcodeproj to simplify this. In conclusion switch to ARC as soon as you can and never look.. it to retain but it'll release them as well so it'll never matter. If I were teaching a new class in Cocoa today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention the memory management.. a new class in Cocoa today I'd probably spend no more than five minutes on the actual memory management rules and I'd probably only mention the memory management naming rules while discussing KVC naming. With ARC I believe you could actually become..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud warning. At the same time imageNamed has gotten a lot of use not for the cache but for the convenience which has probably magnified the problem more than it should have been. whilst warning that On the speed front there is a general misunderstanding..
http://stackoverflow.com/questions/1087676/cant-resize-uiview-in-ib resize UIView in IB Probably something simple but I can't figure why I cannot resize a UIView in a xib in Interface Builder. I created a new view XIB..
http://stackoverflow.com/questions/14659563/to-drawrect-or-not-to-drawrect-when-should-one-use-drawrect-core-graphics-vs-su question Especially with badass tools like this when should you consider drawing interface elements in core graphics Probably when the display of your element is variable. e.g. a button with 20 different color variations. Any other cases Given my..
Accessing & Using the MobileWiFi.framework http://stackoverflow.com/questions/2018110/accessing-using-the-mobilewifi-framework anything. The directory System Library PrivateFrameworks only lists a Info.plist file with no binaries or aliases. Probably doing something terribly wrong wrong directory ... appreciate any help Also as a follow up. To extract the WiFi information..
iPhone sending POST with NSURLConnection http://stackoverflow.com/questions/2071788/iphone-sending-post-with-nsurlconnection past but for some reason the output I get from NSLog @ responseData @ responseData now is just instead of theData . Probably some lame mistake somewhere but I can't seem to find it Any ideas iphone post nsurlconnection share improve this question..
Is it possible to call animatesDrop in a MKAnnotationView rather than MKPinAnnotationView?? (IPHONE) http://stackoverflow.com/questions/2139222/is-it-possible-to-call-animatesdrop-in-a-mkannotationview-rather-than-mkpinannot your custom animation in MKMapViewDelegate method. void mapView MKMapView mapView didAddAnnotationViews NSArray views Probably something like that you won't get the fancy shadow animation if you want it you need to do it yourself void mapView MKMapView..
How to make an progress bar for an NSURLConnection when downloading a file? http://stackoverflow.com/questions/2267950/how-to-make-an-progress-bar-for-an-nsurlconnection-when-downloading-a-file package. But the problem is How do I figure out how much data I have already and how much data has to be downloaded Probably in bytes... And then I have to do some math to get the percentage iphone progress bar nsurlconnection share improve this..
Web site exhibits JavaScript error on iPad / iPhone under 3G but not under WiFi http://stackoverflow.com/questions/3282373/web-site-exhibits-javascript-error-on-ipad-iphone-under-3g-but-not-under-wifi O2 the original exclusive iPhone operator for Apple modifies web content before sending it to iPhones and iPads. Probably before sending it to any device running a mobile browser. They non deterministically inline some of the CSS and JavaScript..
locationServicesEnabled test passes when they are disabled in viewDidLoad http://stackoverflow.com/questions/3401757/locationservicesenabled-test-passes-when-they-are-disabled-in-viewdidload by user errorString @ Access to Location Services denied by user Do something... break case kCLErrorLocationUnknown Probably temporary... errorString @ Location data unavailable Do something else... break default errorString @ An unknown error..
http://stackoverflow.com/questions/4260291/issue-with-iphone-sdk-4-2-1 with iphone sdk 4.2.1 Probably a silly question. When running my project on the Device in the debug mode I get a lot of warnings al having the following..
Action sheet doesn't display when the MFMailComposeViewController's cancel button is tapped http://stackoverflow.com/questions/4274895/action-sheet-doesnt-display-when-the-mfmailcomposeviewcontrollers-cancel-butto MFMailComposeResult result error NSError error is never called whenever the cancel button is pressed. Probably that's the reason why the actionsheet Save draft cancel delete draft is not displayed and therefore the app hangs in right..
Multiple red/destructive buttons UIActionSheet http://stackoverflow.com/questions/4360453/multiple-red-destructive-buttons-uiactionsheet
iPhone: why i got this error — HTTP error 401— Twitter http://stackoverflow.com/questions/4613727/iphone-why-i-got-this-error-http-error-401-twitter
how can I use animation in cocos2d? http://stackoverflow.com/questions/486609/how-can-i-use-animation-in-cocos2d to do this in cocos2d or even what that is but you can do this using Core Animation either with CALayers or UIViews. Probably the simplest way would be to create a UIImageView containing an image of your roulette wheel and animate that. To accomplish..
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone http://stackoverflow.com/questions/4876488/animation-in-opengl-es-view-freezes-when-uiscrollview-is-dragged-on-iphone this question Whether CADisplayLink fires during scrolls depends on the mode with which you add it to the run loop. Probably you have this somewhere displayLink addToRunLoop NSRunLoop currentRunLoop forMode NSDefaultRunLoopMode UIApplication adds..
How can I make a phone call programmatically on iPhone? http://stackoverflow.com/questions/4929717/how-can-i-make-a-phone-call-programmatically-on-iphone phoneNumber Can anyone please help me with how to do this iphone ios phonecalls share improve this question Probably the mymobileNO.titleLabel.text value doesn't include the scheme tel Your code should look like this NSString phoneNumber..
How to apply “filters” to AVCaptureVideoPreviewLayer http://stackoverflow.com/questions/5156872/how-to-apply-filters-to-avcapturevideopreviewlayer the AVCaptureSession's video merely preview it. iphone avfoundation avcapturesession share improve this question Probably the most performant way of handling this would be to use OpenGL ES for filtering and display of these video frames. You..
Transferring ownership of an iPhone app on the app store http://stackoverflow.com/questions/671382/transferring-ownership-of-an-iphone-app-on-the-app-store main problem was those help desk folks were knowing things were going to change but they didn't know by when and how. Probably due to iPad coming and related timelines involved . Anyway. It's possible and it's pretty easy. Send your request wait a..
Objective-C 2.0: class_copyPropertyList(), how to list properties from categories http://stackoverflow.com/questions/848636/objective-c-2-0-class-copypropertylist-how-to-list-properties-from-categorie are only described as properties in the public headers not actually declared as such when building the UIKit itself. Probably they adopted the property syntax to make the creation of the public headers a little quicker. For reference here's my test..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect context void context if finished boolValue UIView item UIView context item.transform CGAffineTransformIdentity Probably have to play with timing and angles but this should get you started. EDIT I edited the response to add code to put the item..
Converting a UIImage black'n white and not grayscale for using tesseract http://stackoverflow.com/questions/9992078/converting-a-uiimage-blackn-white-and-not-grayscale-for-using-tesseract black and white pixels and not grayscale images iphone image filter uiimage tesseract share improve this question Probably the fastest way to do this would be to use OpenGL ES 2.0 shaders to apply the threshold to your image. My GPUImage framework..
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