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2014/10/15 ¤U¤È 10:03:35
iphone Programming Glossary: alwaysAES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone UTF8String pool drain return 0 Given this code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c nil return self void receiveTestNotification NSNotification notification notification name should always be @ TestNotification unless you use this method for observation of other notifications as well. if..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework Bin Bin 0 which is often referred to as 'DC Offset'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and A 0 .imagp is used to store Bin n..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning..
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 using approximatively the same approach except I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead..
CSS “position: fixed;” into iPad/iPhone? http://stackoverflow.com/questions/4889601/css-position-fixed-into-ipad-iphone I have been strugling with fixed positioning in iPad for a while. I know iScroll and it does not always seem to work even their demo . I also know that Sencha has a fix for that but couldn't ctrl f the source..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload is set to only work in portrait modes upsidedown and regular . How can i make the image always show the correct orientation after uploading the image appears to be correct as displayed in an UIImageView..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers look up the objects it needs to do its job e.g. reference a global variable . Instead you should always inject those dependencies into the controller i.e. pass in the objects it needs via methods . If you..
http://stackoverflow.com/questions/603907/uiimage-resize-then-crop in portrait mode. Here's my code it's part of a categeory on UIImage. Target size in my code is always set to the full screen size of the device. @implementation UIImage Extras #pragma mark #pragma mark..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers class as usual @interface ChildViewController UIViewController Delegate properties should always be weak references See http stackoverflow.com a 4796131 263871 for the rationale Tip If you're not using..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature just in case Apple decides to add such a method in a future version of the OS. In case you're always using the same date format s you could also add category methods that return singleton instances with..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always.. query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the interface has no IP is down. Edit 2 As was pointed out by others the preferred solution.. lost in the comment noise do not use the MAC as UUID create a hash using the MAC . That hash will always create the same result every time even across reinstalls and apps if the hashing is done in the same..
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 id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match exactly. Once you have the IMP you need to cast it to a function pointer that includes all of..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring share improve this question Unfortunately stringByAddingPercentEscapesUsingEncoding doesn't always work 100 . It encodes non URL characters but leaves the reserved characters like slash and ampersand..
How to use NSJSONSerialization http://stackoverflow.com/questions/8356842/how-to-use-nsjsonserialization get a read on the JSON object by printing out the number of elements and things like that but I am always getting EXC_BAD_ACCESS. How do I use NSJSONSerialization to parse the JSON above and turn it into the..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud The biggest thing that imageNamed does is decode the image data from the source file which almost always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone s n NSString alloc initWithData plain encoding NSUTF8StringEncoding UTF8String pool drain return 0 Given this code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality you need in forward and reverse... NSData encryptString..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c receiveTestNotification name @ TestNotification object nil return self void receiveTestNotification NSNotification notification notification name should always be @ TestNotification unless you use this method for observation of other notifications as well. if notification name isEqualToString @ TestNotification NSLog @..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework ie 512 44Hz or n 2 bin 1 .idealFreq Actually there is an extra Bin Bin 0 which is often referred to as 'DC Offset'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and A 0 .imagp is used to store Bin n 2 And the magnitude of each complex number is the amount of..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c names with an underscore in Objective C duplicate Possible Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning Java in college days. So when I define a property in Objective..
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 share improve this question I have build such kind of application using approximatively the same approach except I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles..
CSS “position: fixed;” into iPad/iPhone? http://stackoverflow.com/questions/4889601/css-position-fixed-into-ipad-iphone &ldquo position fixed &rdquo into iPad iPhone I have been strugling with fixed positioning in iPad for a while. I know iScroll and it does not always seem to work even their demo . I also know that Sencha has a fix for that but couldn't ctrl f the source code for that fix. I am hoping that someone may have the..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload uploaded and viewed as it had been rotated 90 degrees. my application is set to only work in portrait modes upsidedown and regular . How can i make the image always show the correct orientation after uploading the image appears to be correct as displayed in an UIImageView directly after taking the picture but viewing on the..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers In a nutshell this means that your controller shouldn't look up the objects it needs to do its job e.g. reference a global variable . Instead you should always inject those dependencies into the controller i.e. pass in the objects it needs via methods . If you follow the dependency injection pattern your controller will..
http://stackoverflow.com/questions/603907/uiimage-resize-then-crop in landscape so might not have noticed any deficiencies in portrait mode. Here's my code it's part of a categeory on UIImage. Target size in my code is always set to the full screen size of the device. @implementation UIImage Extras #pragma mark #pragma mark Scale and crop image UIImage imageByScalingAndCroppingForSize..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers ChildViewControllerDelegate 2. Declaration of the view controller class as usual @interface ChildViewController UIViewController Delegate properties should always be weak references See http stackoverflow.com a 4796131 263871 for the rationale Tip If you're not using ARC use `assign` instead of `weak` @property nonatomic..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature to prefix your category method somehow to avoid name conflicts just in case Apple decides to add such a method in a future version of the OS. In case you're always using the same date format s you could also add category methods that return singleton instances with certain configurations something like sharedRFC3339DateFormatter..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now a bit of effort since the most reliable per device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the interface has no IP is down. Edit 2 As was.. query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the interface has no IP is down. Edit 2 As was pointed out by others the preferred solution since iOS 6 is UIDevice identifierForVendor . In most.. to want you to use . Edit 3 So this major point doesn't get lost in the comment noise do not use the MAC as UUID create a hash using the MAC . That hash will always create the same result every time even across reinstalls and apps if the hashing is done in the same way . Anyways nowadays 2013 this isn't necessary any more except..
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 are called IMP s and are simple typedef ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match exactly. Once you have the IMP you need to cast it to a function pointer that includes all of the details that ARC needs including the two implicit hidden..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring not just the spaces how do I do this iphone objective c ipad share improve this question Unfortunately stringByAddingPercentEscapesUsingEncoding doesn't always work 100 . It encodes non URL characters but leaves the reserved characters like slash and ampersand alone. Apparently this is a bug that Apple is aware of but..
How to use NSJSONSerialization http://stackoverflow.com/questions/8356842/how-to-use-nsjsonserialization saw as an example on another website. I have been trying to get a read on the JSON object by printing out the number of elements and things like that but I am always getting EXC_BAD_ACCESS. How do I use NSJSONSerialization to parse the JSON above and turn it into the data structure I mentioned iphone objective c json nsdictionary..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud there is a general misunderstanding of what is going on. The biggest thing that imageNamed does is decode the image data from the source file which almost always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but consumes over half a MB decompressed..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone encoding NSUTF8StringEncoding UTF8String pool drain return 0 Given this code and the fact that encrypted data will not always translate nicely into an NSString it may be more convenient to write two methods that wrap the functionality you need in..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c object nil return self void receiveTestNotification NSNotification notification notification name should always be @ TestNotification unless you use this method for observation of other notifications as well. if notification name isEqualToString..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework there is an extra Bin Bin 0 which is often referred to as 'DC Offset'. It so happens that Bin 0 and Bin n 2 will always have complex component 0 so A 0 .realp is used to store Bin 0 and A 0 .imagp is used to store Bin n 2 And the magnitude..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c C duplicate Possible Duplicate How does an underscore in front of a variable in a cocoa objective c class work I've always avoided underscores in my variable names perhaps because its just not what was done back in my learning Java in college..
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 such kind of application using approximatively the same approach except I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don't overlay with a UIImage but instead draw the image..
CSS “position: fixed;” into iPad/iPhone? http://stackoverflow.com/questions/4889601/css-position-fixed-into-ipad-iphone into iPad iPhone I have been strugling with fixed positioning in iPad for a while. I know iScroll and it does not always seem to work even their demo . I also know that Sencha has a fix for that but couldn't ctrl f the source code for that fix...
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload 90 degrees. my application is set to only work in portrait modes upsidedown and regular . How can i make the image always show the correct orientation after uploading the image appears to be correct as displayed in an UIImageView directly after..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers controller shouldn't look up the objects it needs to do its job e.g. reference a global variable . Instead you should always inject those dependencies into the controller i.e. pass in the objects it needs via methods . If you follow the dependency..
http://stackoverflow.com/questions/603907/uiimage-resize-then-crop any deficiencies in portrait mode. Here's my code it's part of a categeory on UIImage. Target size in my code is always set to the full screen size of the device. @implementation UIImage Extras #pragma mark #pragma mark Scale and crop image..
How do I set up a simple delegate to communicate between two view controllers? http://stackoverflow.com/questions/6168919/how-do-i-set-up-a-simple-delegate-to-communicate-between-two-view-controllers of the view controller class as usual @interface ChildViewController UIViewController Delegate properties should always be weak references See http stackoverflow.com a 4796131 263871 for the rationale Tip If you're not using ARC use `assign`..
What is the best way to deal with the NSDateFormatter locale “feature”? http://stackoverflow.com/questions/6613110/what-is-the-best-way-to-deal-with-the-nsdateformatter-locale-feature to avoid name conflicts just in case Apple decides to add such a method in a future version of the OS. In case you're always using the same date format s you could also add category methods that return singleton instances with certain configurations..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now per device identifier seems to be the MAC address. You could query the MAC and use that as UUID. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the.. Edit One needs to always query the MAC of the same interface of course. I guess the best bet is with en0 . The MAC is always present even if the interface has no IP is down. Edit 2 As was pointed out by others the preferred solution since iOS 6.. point doesn't get lost in the comment noise do not use the MAC as UUID create a hash using the MAC . That hash will always create the same result every time even across reinstalls and apps if the hashing is done in the same way . Anyways nowadays..
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 ed function pointers id IMP id SEL ... 1 . This may be close to the actual method signature of the method but will not always match exactly. Once you have the IMP you need to cast it to a function pointer that includes all of the details that ARC..
iPhone - strange error when testing on simulator http://stackoverflow.com/questions/788277/iphone-strange-error-when-testing-on-simulator
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring objective c ipad share improve this question Unfortunately stringByAddingPercentEscapesUsingEncoding doesn't always work 100 . It encodes non URL characters but leaves the reserved characters like slash and ampersand alone. Apparently this..
How to use NSJSONSerialization http://stackoverflow.com/questions/8356842/how-to-use-nsjsonserialization have been trying to get a read on the JSON object by printing out the number of elements and things like that but I am always getting EXC_BAD_ACCESS. How do I use NSJSONSerialization to parse the JSON above and turn it into the data structure I mentioned..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud of what is going on. The biggest thing that imageNamed does is decode the image data from the source file which almost always significantly inflates the data size for example a screen sized PNG file might consume a few dozen KBs when compressed but..
lexical or preprocessor issue file not found occurs while archiving? http://stackoverflow.com/questions/10925539/lexical-or-preprocessor-issue-file-not-found-occurs-while-archiving the Framework and all it's headers are imported into your project properly. Also in your Build Settings set YES to Always search user paths and make sure your User header paths are pointing to the Framework. Finally Build Clean and Restart Xcode...
http://stackoverflow.com/questions/11717219/uibutton-image-text-ios could even use the same approach by code without creating UILabels and UIImages inside as other solutions proposed. Always Keep It Simple EDIT Attached a small example having the 3 things set title image and background with correct insets share..
Attempting to deploy my app on my jailbroken iphone, but the app closes immediately! http://stackoverflow.com/questions/1285980/attempting-to-deploy-my-app-on-my-jailbroken-iphone-but-the-app-closes-immediat find it in Keychain Access's Certificates list and right click Get Info under Trust change When Using This Cert to Always Trust . Write an iPhone app in XCode. Change Project Project Settings Build Code Signing Ident Any iPhone Device to Don't..
AVAudioPlayer turns off iPod - how to work around? http://stackoverflow.com/questions/1507541/avaudioplayer-turns-off-ipod-how-to-work-around the value of this property reverts to FALSE. To regain mixing behavior you must then re set this property. Always check to see if setting this property succeeds or fails and react appropriately behavior may change in future releases of..
FBConnect facebook.stream.publish with NSDictionary problems http://stackoverflow.com/questions/1652049/fbconnect-facebook-stream-publish-with-nsdictionary-problems SBJSON new autorelease NSDictionary actionLinks NSArray arrayWithObjects NSDictionary dictionaryWithObjectsAndKeys @ Always Running @ text @ http thinkdiff.net @ href nil nil NSString actionLinksStr jsonWriter stringWithObject actionLinks NSDictionary..
Command /usr/bin/codesign failed with exit code 1 http://stackoverflow.com/questions/2017756/command-usr-bin-codesign-failed-with-exit-code-1 on this page. What the problem was for me was that in Keychain Access the actual Apple WWDR certificate was marked as Always Trust . It needed to be System Defaults . That goes for your Development and Distribution certificates too. If any of them.. Defaults . That goes for your Development and Distribution certificates too. If any of them are incorrectly set to Always Trust that can apparently cause this problem. So in Keychain Access click on the Apple Worldwide Developer Relations Certificate..
@property and retain, assign, copy, nonatomic in Objective-C http://stackoverflow.com/questions/2255861/property-and-retain-assign-copy-nonatomic-in-objective-c So here is what I've learned in my very short time coding in Objective C nonatomic vs. atomic atomic is the default. Always use nonatomic . I don't know why but the book I read said there is rarely a reason to use atomic . BTW The book I read is..
Target iPhone Simulator Macro Not Working http://stackoverflow.com/questions/3427888/target-iphone-simulator-macro-not-working const Mode @ Device #endif void applicationDidFinishLaunching UIApplication application ... NSLog @ Mode @ Mode ... Always results in Mode Simulator being logged. I'm currently running XCode 3.2.4 if that helps. Thanks. iphone cocoa touch share..
Anyone done an Objective-C Xode version of Osherove´s TDD Kata “String Calculator”? http://stackoverflow.com/questions/3628906/anyone-done-an-objective-c-xode-version-of-osheroves-tdd-kata-string-calculato done an Objective C Xode version of Osherove´ s TDD Kata &ldquo String Calculator&rdquo Always trying to code better and I am interested in doing TDD for Objective C and Xcode. Do you know any post that implement something..
post link using facebook sdk on iphone http://stackoverflow.com/questions/4422306/post-link-using-facebook-sdk-on-iphone SBJSON new autorelease NSDictionary actionLinks NSArray arrayWithObjects NSDictionary dictionaryWithObjectsAndKeys @ Always Running @ text @ http itsti.me @ href nil nil NSString actionLinksStr jsonWriter stringWithObject actionLinks NSDictionary..
Getting displacement from accelerometer data with Core Motion http://stackoverflow.com/questions/4449565/getting-displacement-from-accelerometer-data-with-core-motion stage for optimisation. Do it very careful because every tiny bug will lead to huge errors after short period of time. Always bear in mind that even a very small error e.g. 0.1 will grow rapidly after doing integration twice. Situation will become..
How to post to a friends Wall using Facebook Graph API for iPhone http://stackoverflow.com/questions/4614920/how-to-post-to-a-friends-wall-using-facebook-graph-api-for-iphone new autorelease NSDictionary actionLinks NSArray arrayWithObjects NSDictionary dictionaryWithObjectsAndKeys @ Always Running @ text @ http itsti.me @ href nil nil NSString actionLinksStr jsonWriter stringWithObject actionLinks NSDictionary..
What are the Dangers of Method Swizzling in Objective C? http://stackoverflow.com/questions/5339276/what-are-the-dangers-of-method-swizzling-in-objective-c to be called unless documented otherwise . If you apply this same thought to swizzling you've covered most issues. Always call the original implementation. If you don't you're probably changing too much to be safe. Possible naming conflicts Naming..
Why won't instruments execute my Monotouch application? http://stackoverflow.com/questions/5442324/why-wont-instruments-execute-my-monotouch-application phone. I've tried it with debug builds and ad hoc builds using the parameters defined on the Monotouch support page . Always the same. I'm using Monotouch 3.2.5 iOS 4.3.1 on a 3GS Xcode 4 and Snow Leopard. I've see this issued mentioned in a few..
Encrypting 16 bytes of UTF8 with SecKeyWrapper breaks (ccStatus == -4304) http://stackoverflow.com/questions/5884119/encrypting-16-bytes-of-utf8-with-seckeywrapper-breaks-ccstatus-4304 padding on the decryption side causing the decryption process to fail which is generally what I was experiencing . Always using kCCOptionPKCS7Padding to encrypt decrypt is working for me so far for strings that satisfy length 16 0 and those that..
http://stackoverflow.com/questions/5902705/qr-code-reader-for-iphone to create QR code reader based application. Using which library I can create my application Note I searched in google. Always I am getting zxing . I downloaded the zxing project. But the problem is I run the application. But it is reading only the..
iOS SDK posting a link & displaying a thumbnail http://stackoverflow.com/questions/6509838/ios-sdk-posting-a-link-displaying-a-thumbnail SBJSON new autorelease NSDictionary actionLinks NSArray arrayWithObjects NSDictionary dictionaryWithObjectsAndKeys @ Always Running @ text @ http itsti.me @ href nil nil NSString actionLinksStr jsonWriter stringWithObject actionLinks NSDictionary..
How to protect app IPA from hacks if reverse engineering is possible http://stackoverflow.com/questions/6939222/how-to-protect-app-ipa-from-hacks-if-reverse-engineering-is-possible It is not safe to assume that a hardcoded URL even if obfuscated beyond belief can't be peeled out of your product. Always design your apps such that safety of user data is guaranteed as far as possible even if built in ressources get compromised...
iPhone ImageMagick Library - converting from batch file script to Objective-C using MagickWand API http://stackoverflow.com/questions/7480812/iphone-imagemagick-library-converting-from-batch-file-script-to-objective-c-us 5 argv NULL exceptionInfo free input_image free output_image if status MagickFalse ThrowWandException magick_wand Always throws an exception here... size_t my_size unsigned char my_image MagickGetImageBlob magick_wand my_size NSData data NSData..
how do you determine spacing between cells in UICollectionView flowLayout http://stackoverflow.com/questions/13017257/how-do-you-determine-spacing-between-cells-in-uicollectionview-flowlayout ipad uicollectionview share improve this question Taking @matt's lead I modified his code to insure that items are ALWAYS left aligned. I found that if an item ended up on a line by itself it would be centered by the flow layout. I made the following..
UIWebView and NSURLCache have a troubled relationship http://stackoverflow.com/questions/2090286/uiwebview-and-nsurlcache-have-a-troubled-relationship which one to use. But #3 is throwing me for a loop. It seems that regardless of cache control headers UIWebView will ALWAYS reload the HTML when going back. So I tried to force caching of the HTML in my custom NSURLCache class. It seems to work..
does addSubview increment retain count? http://stackoverflow.com/questions/4163908/does-addsubview-increment-retain-count addSubview increment retain count I've tested it and it looks like it does. So my question is does it ALWAYS increment the retain count. So everytime I do something like this UIView theView UIView alloc initWithFrame CGRect aFrame..
Objective C alloc/release error http://stackoverflow.com/questions/6928028/objective-c-alloc-release-error string that is autoreleased which will crash. When you don't need to keep a string around after the method you are in ALWAYS use autorelease. The correct code is NSString theXML NSString alloc initWithBytes xmlData bytes length xmlData length encoding..
MFMailComposer send email without presenting view http://stackoverflow.com/questions/7328980/mfmailcomposer-send-email-without-presenting-view this it would very probably be thrown out of the app store or denied submission. For security reasons the user should ALWAYS be able to see email they are sending. If you want to send data without the user seeing it transmit the information to a..
XCode: Displaying a UIDatePicker when user clicks on UITextbox http://stackoverflow.com/questions/8974131/xcode-displaying-a-uidatepicker-when-user-clicks-on-uitextbox When I try the programmatic approach nothing is displayed and when I try dragging it onto the StoryBoard it ALWAYS displays. When I set it's attribute to hidden it hides but then I can't get it to show even when I try to add code to the..
Should URLForUbiquityContainerIdentifier: be called in a thread outside the main thread? http://stackoverflow.com/questions/9050359/should-urlforubiquitycontaineridentifier-be-called-in-a-thread-outside-the-main could block for a significant time. What is everyone's thoughts Call it in the main thread and don't worry or yes ALWAYS make this call in another thread iphone objective c ios ios5 icloud share improve this question NSFileManager can be..
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