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2014/10/15 ¤U¤È 10:13:43
iphone Programming Glossary: seenHow can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path used the following code to animate an image of a view into an icon to indicate saving as can be seen in the video for this application First of all import QuartzCore header file #import QuartzCore QuartzCore.h..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone luck so far. Apple's CryptoExercise certainly has something but I can't make sense of it... I've seen lots of references to CCCrypt but it's failed in every case I've used it. I would also have to be able..
http://stackoverflow.com/questions/158914/cropping-a-uiimage use this to take a UIImage and return a small square representation of an image similar to what's seen in the album view of the Photos app. I know I could use a UIImageView and adjust the crop mode to achieve..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk turn on bluetooth in the iphone sdk I have seen a lot of questions about this but no one actually gives a real answer frameworks to import actual code..
http://stackoverflow.com/questions/3097244/exit-application-in-ios-4-0 popping up again iOS Human Interface Guidelines says Don't Quit Programmatically . And we have seen many reports of apps that had calls to exit in them in the past. Exiting instead of suspending by setting..
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 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..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview transform to a UIView I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints Theres a significant Overhead time drawing a full PDF page to a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser a comment author. iphone xml parsing sdk share improve this question Best comparison I've seen on the subject http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial but it was mostly written in C. Looking for more Objective C style...
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events be accomplished iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app into 'Store Demo' mode so that the home button and swipe to home gesture is disabled. If you have seen the iPads in the Apple Store running the smart sign apps then you will know what I mean. It is actually..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library to be functioning in a different manner than if it is connected to the internet. Everything I've seen about getting the SSID tells me I have to use Apple80211 which I understand is a private library. I..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous..
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 non objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables...
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app otherwise the user would need to use their API key. Does this sound right and has anyone got or seen any sample code I have to think this is a common piece of code. UPDATE Will Apple allow this It is a..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've seen this at Apple inside UIPickerView.h id UIPickerViewDataSource _dataSource why's that underscore there..
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention your implementation and after your implementation. I know you don't always have to call super as seen in many other discussions . When you do call it is it expected before or after you code This could have..
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 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 along the lines of using ARC is no substitute for knowing the Cocoa memory management..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition App #160 Add voice recognition closed I'd like to build an app that uses voice recognition. I've seen big companies like Google etc implement this feature but I'm curious about doing it on a start up level...
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path is accomplished using a CAKeyframeAnimation. For example I've used the following code to animate an image of a view into an icon to indicate saving as can be seen in the video for this application First of all import QuartzCore header file #import QuartzCore QuartzCore.h UIImageView imageViewForAnimation UIImageView alloc..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone detailed in the first comment on this post but I've had no luck so far. Apple's CryptoExercise certainly has something but I can't make sense of it... I've seen lots of references to CCCrypt but it's failed in every case I've used it. I would also have to be able to decrypt an encrypted string but I hope that's as simple..
http://stackoverflow.com/questions/158914/cropping-a-uiimage so I can get a scaled chunk of the center of the image I use this to take a UIImage and return a small square representation of an image similar to what's seen in the album view of the Photos app. I know I could use a UIImageView and adjust the crop mode to achieve the same results but these images are sometimes displayed..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk turn on bluetooth in the iphone sdk I have seen a lot of questions about this but no one actually gives a real answer frameworks to import actual code etc . They only say with a private api and that will get..
http://stackoverflow.com/questions/3097244/exit-application-in-ios-4-0 loading the old state. No reason for exit. Edit As this keeps popping up again iOS Human Interface Guidelines says Don't Quit Programmatically . And we have seen many reports of apps that had calls to exit in them in the past. Exiting instead of suspending by setting the appropriate key in the Info.plist file is perfectly..
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 xCode 3.2.3 w iPhone SDK 4 get &ldquo Base 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..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview do I apply a perspective transform to a UIView I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic programmer Core Animation podcasts but..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints a real time render of new zoom levels. CATiledLayer Method Theres a significant Overhead time drawing a full PDF page to a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser to extract that cdata. And know whether it is the blog author a comment author. iphone xml parsing sdk share improve this question Best comparison I've seen on the subject http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project The difference between the slowest and fastest parsers in..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file various objects from views throughout my app. I am interested to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial but it was mostly written in C. Looking for more Objective C style. This also seems like a ridiculous way to write to a PDF..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events a requirement. Does anyone have any clues as to how this can be accomplished iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain how this may influence the reviewing process. If you use..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app this question It is possible to put an iPad or iPhone into 'Store Demo' mode so that the home button and swipe to home gesture is disabled. If you have seen the iPads in the Apple Store running the smart sign apps then you will know what I mean. It is actually pretty trivial to make this work all you need to do is install..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library to a Adhoc network for a 3rd party hardware device it needs to be functioning in a different manner than if it is connected to the internet. Everything I've seen about getting the SSID tells me I have to use Apple80211 which I understand is a private library. I also read that if I use a private library Apple will not approve..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space texture coordinates are defined in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous calls were made that allowed for this. glMatrixMode GL_TEXTURE..
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 selectors you're trying to call that return void or other non objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason that with ARC enabled that it can't..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app paypal mobile site and let them complete the transaction there otherwise the user would need to use their API key. Does this sound right and has anyone got or seen any sample code I have to think this is a common piece of code. UPDATE Will Apple allow this It is a charity app so I am assuming there is no issue. Re UPDATE I..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable underscore in front of an instance variable duplicate Possible Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've seen this at Apple inside UIPickerView.h id UIPickerViewDataSource _dataSource why's that underscore there Does it have a special meaning A Convention I must know about..
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention I see some example code with super viewDidLoad called before your implementation and after your implementation. I know you don't always have to call super as seen in many other discussions . When you do call it is it expected before or after you code This could have consequences depending on what super's implementation does...
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 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 along the lines of using ARC is no substitute for knowing the Cocoa memory management rules. This is mostly true but it's important to understand..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition App #160 Add voice recognition closed I'd like to build an app that uses voice recognition. I've seen big companies like Google etc implement this feature but I'm curious about doing it on a start up level. Anyone looked into this Are there any tools out there for..
How can I animate the movement of a view or image along a curved path? http://stackoverflow.com/questions/1142727/how-can-i-animate-the-movement-of-a-view-or-image-along-a-curved-path For example I've used the following code to animate an image of a view into an icon to indicate saving as can be seen in the video for this application First of all import QuartzCore header file #import QuartzCore QuartzCore.h UIImageView..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone post but I've had no luck so far. Apple's CryptoExercise certainly has something but I can't make sense of it... I've seen lots of references to CCCrypt but it's failed in every case I've used it. I would also have to be able to decrypt an encrypted..
http://stackoverflow.com/questions/158914/cropping-a-uiimage of the image I use this to take a UIImage and return a small square representation of an image similar to what's seen in the album view of the Photos app. I know I could use a UIImageView and adjust the crop mode to achieve the same results..
Programmatically turn on bluetooth in the iphone sdk? http://stackoverflow.com/questions/1743610/programmatically-turn-on-bluetooth-in-the-iphone-sdk turn on bluetooth in the iphone sdk I have seen a lot of questions about this but no one actually gives a real answer frameworks to import actual code etc . They only say..
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..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview do I apply a perspective transform to a UIView I'm looking to perform a perspective transform on a UIView such as seen in coverflow Does anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints CATiledLayer Method Theres a significant Overhead time drawing a full PDF page to a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers..
Choosing the right IOS XML parser http://stackoverflow.com/questions/4181690/choosing-the-right-ios-xml-parser it is the blog author a comment author. iphone xml parsing sdk share improve this question Best comparison I've seen on the subject http www.raywenderlich.com 553 how to chose the best xml parser for your iphone project The difference between..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file app. I am interested to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial but it was mostly written in C. Looking for more Objective C style. This also seems..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events as to how this can be accomplished iphone background location multitasking share improve this question I have seen this behavior too. After trying a lot I discovered two things which could help. But I am still uncertain how this may influence..
Lock-down iPhone/iPod/iPad so it can only run one app http://stackoverflow.com/questions/5011774/lock-down-iphone-ipod-ipad-so-it-can-only-run-one-app an iPad or iPhone into 'Store Demo' mode so that the home button and swipe to home gesture is disabled. If you have seen the iPads in the Apple Store running the smart sign apps then you will know what I mean. It is actually pretty trivial to..
iPhone get SSID without private library http://stackoverflow.com/questions/5198716/iphone-get-ssid-without-private-library device it needs to be functioning in a different manner than if it is connected to the internet. Everything I've seen about getting the SSID tells me I have to use Apple80211 which I understand is a private library. I also read that if I..
OpenGL Texture Coordinates in Pixel Space http://stackoverflow.com/questions/5879403/opengl-texture-coordinates-in-pixel-space in the 0 1 range but ideally I'd like to map them from 0 1023 the size of my TextureAtlas for readability's sake. I've seen sample code that defines coordinates in this manner but haven't been able to suss out what previous calls were made that..
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 void or other non objects you could enable compiler features to ignore the warning but it may be dangerous. I've seen Clang go through a few iterations of how it handles return values that aren't assigned to local variables. There's no reason..
Has anyone implemented the PayPal API through a native iPhone app? http://stackoverflow.com/questions/779423/has-anyone-implemented-the-paypal-api-through-a-native-iphone-app the transaction there otherwise the user would need to use their API key. Does this sound right and has anyone got or seen any sample code I have to think this is a common piece of code. UPDATE Will Apple allow this It is a charity app so I am..
When do you make an underscore in front of an instance variable? [duplicate] http://stackoverflow.com/questions/837559/when-do-you-make-an-underscore-in-front-of-an-instance-variable duplicate Possible Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've seen this at Apple inside UIPickerView.h id UIPickerViewDataSource _dataSource why's that underscore there Does it have a special..
`[super viewDidLoad]` convention http://stackoverflow.com/questions/844195/super-viewdidload-convention called before your implementation and after your implementation. I know you don't always have to call super as seen in many other discussions . When you do call it is it expected before or after you code This could have consequences depending..
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 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 along the lines of using ARC is no substitute for knowing the Cocoa memory management rules. This is..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition App #160 Add voice recognition closed I'd like to build an app that uses voice recognition. I've seen big companies like Google etc implement this feature but I'm curious about doing it on a start up level. Anyone looked into..
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