¡@
2014/10/15 ¤U¤È 10:13:25
iphone Programming Glossary: returnsUIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos a deeper look this library seems to take NSData info as an input and the UIImagePickerController returns a UIImage after taking a snapshot. In theory if we use the selected from the UIkit category for UIImage.. numberWithInt EXIF_Model .... .... The retrieving of tags definition is OK but all tag values returns nil In case you want to give a try to the library you need to define a global variable to get it running..
How to change the device orientation programmatically in iOS 6 http://stackoverflow.com/questions/12650137/how-to-change-the-device-orientation-programmatically-in-ios-6 get this thing done in a much cleaner fashion. You use supportedInterfaceOrientations instead. It returns all of the interface orientations that the view controller supports a mask of interface orientation..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific.. key in NSUserDefaults to determine what the user's settings for preferred languages are. This returns an array of language codes with the first one being the one set by the user for their phone and the..
http://stackoverflow.com/questions/3504173/detect-retina-display device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the displayLinkWithTarget..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys and make sure they always correspond. Currently I just use myDictionary allKeys but obviously this returns them in an arbitrary non guaranteed order. Is there a data structure in Objective C that I'm missing..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview the content to resize my parent views appropriately. The obvious sizeThatFits unfortunately just returns the current frame size of the webView. iphone cocoa touch uiwebview share improve this question ..
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 to a single application until the payload is removed. The home button is disabled and the device returns to the specified application automatically upon wake or reboot. Read more about it here https developer.apple.com..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell to retrieve the image for that particular cell based on your unique key for it . If it returns nil that means that the image is missing from the cache and you need your background image loading thread..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request NSURLRequest request returningResponse NSURLResponse response error NSError error This returns a NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a..
http://stackoverflow.com/questions/5757386/how-to-mask-an-uiimageview UIImage imageWithCGImage maskedImageRef CGImageRelease mask CGImageRelease maskedImageRef returns new image with mask applied return maskedImage After you provided your code I have added some numbers..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape this psuedo code NSString string @ lt span gt Foo lt span gt string stringByUnescapingHTML Which returns span Foo span Hopefully unescaping all other HTML entities as well and even ASCII codes like Ӓ..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you..
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 . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have to change things a bit SEL selector NSSelectorFromString @ processRegion ofView.. new object values when no longer used methods in the init copy family or attributed with ns_returns_retained Do nothing assume returned object value will be valid in local scope until inner most release.. value will be valid in local scope until inner most release pool is drained attributed with ns_returns_autoreleased The call to methodForSelector assumes that the return value of the method it's calling..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on @ 6.0 code here Outdated version below to get OS version UIDevice currentDevice systemVersion returns string which can be turned into int float via NSString floatValue NSString intValue like this Both values..
Reading HTML content from a UIWebView http://stackoverflow.com/questions/992348/reading-html-content-from-a-uiwebview lets you pass in a URL as an instance of NSURL which can easily be instantiated from NSString and returns a string with the complete contents of the page at that URL. For example NSString googleString @ http..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an NSUInteger unitFlags fromDate NSDate startingDate toDate NSDate resultDate options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates ...
Best way to serialize a NSData into an hexadeximal string http://stackoverflow.com/questions/1305225/best-way-to-serialize-a-nsdata-into-an-hexadeximal-string wrote. It returns a hexadecimal NSString representing the NSData where the data can be any length. Returns an empty string if NSData is empty. NSData Conversion.h #import Foundation Foundation.h @interface NSData.. @implementation NSData NSData_Conversion #pragma mark String Conversion NSString hexadecimalString Returns hexadecimal string of NSData. Empty string if data is empty. const unsigned char dataBuffer const unsigned..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project although it seems like the parenthesis are correct ... #pragma mark #pragma mark Core Data stack Returns the managed object context for the application. If the context doesn't already exist it is created and.. init managedObjectContext setPersistentStoreCoordinator coordinator return managedObjectContext Returns the managed object model for the application. If the model doesn't already exist it is created by merging.. NSManagedObjectModel mergedModelFromBundles nil retain return managedObjectModel Returns the persistent store coordinator for the application. If the coordinator doesn't already exist it is..
How to create a GUID/UUID using the iPhone SDK http://stackoverflow.com/questions/427180/how-to-create-a-guid-uuid-using-the-iphone-sdk iOS SDK iphone guid uuid share improve this question UIDevice currentDevice uniqueIdentifier Returns the Unique ID of your iPhone. EDIT This is now deprecated and apps are being rejected from the App Store..
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos that has been taken with the UIImagePickerController After a deeper look this library seems to take NSData info as an input and the UIImagePickerController returns a UIImage after taking a snapshot. In theory if we use the selected from the UIkit category for UIImage NSData UIImageJPEGRepresentation UIImage image CGFloat compressionQuality.. numberWithInt EXIF_DateTime id t exifData tagValue NSNumber numberWithInt EXIF_Model .... .... The retrieving of tags definition is OK but all tag values returns nil In case you want to give a try to the library you need to define a global variable to get it running as explained in the doc but hum.. BOOL gLogging FALSE UPDATE..
How to change the device orientation programmatically in iOS 6 http://stackoverflow.com/questions/12650137/how-to-change-the-device-orientation-programmatically-in-ios-6 will NOT work on Xcode 4.5. Apple provides a new method to get this thing done in a much cleaner fashion. You use supportedInterfaceOrientations instead. It returns all of the interface orientations that the view controller supports a mask of interface orientation values. UIInterfaceOrientationMask Enum These constants are..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone pixelData The pixel struct with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage. 8 bits each of red green blue and..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the app in a different language than the.. NSLocalizedString and variants thereof access the AppleLanguages key in NSUserDefaults to determine what the user's settings for preferred languages are. This returns an array of language codes with the first one being the one set by the user for their phone and the subsequent ones used as fallbacks if a resource is not available..
http://stackoverflow.com/questions/3504173/detect-retina-display 1.0 in 1x mode and 2.0 in 2x mode even though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the displayLinkWithTarget selector method on the main screen which exists in..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys keys of the dictionary as well as the values of the array and make sure they always correspond. Currently I just use myDictionary allKeys but obviously this returns them in an arbitrary non guaranteed order. Is there a data structure in Objective C that I'm missing Does anyone have any suggestions on how to more elegantly do..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone 00_Introduction.html They bend your head a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to be an instance variable not scoped to the method. I use..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview single page content. I'd like to find out the CGSize of the content to resize my parent views appropriately. The obvious sizeThatFits unfortunately just returns the current frame size of the webView. iphone cocoa touch uiwebview share improve this question It turned out that my first guess using sizeThatFits was not..
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 docs By installing an app lock payload the device is locked to a single application until the payload is removed. The home button is disabled and the device returns to the specified application automatically upon wake or reboot. Read more about it here https developer.apple.com library ios featuredarticles iPhoneConfigurationProfileRef..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell a cell you'd send an objectForKey message to the NSMutableDictionary to retrieve the image for that particular cell based on your unique key for it . If it returns nil that means that the image is missing from the cache and you need your background image loading thread to go retrieve it. Otherwise you will get back the appropriate..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request ways using NSURLConnection Synchronously NSData sendSynchronousRequest NSURLRequest request returningResponse NSURLResponse response error NSError error This returns a NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a separate thread to avoid blocking the UI. Asynchronously void..
http://stackoverflow.com/questions/5757386/how-to-mask-an-uiimageview CGImageCreateWithMask image CGImage mask UIImage maskedImage UIImage imageWithCGImage maskedImageRef CGImageRelease mask CGImageRelease maskedImageRef returns new image with mask applied return maskedImage After you provided your code I have added some numbers as comments to it for reference. You still have two options...
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape escape unescape in Objective C. What I want is something like this psuedo code NSString string @ lt span gt Foo lt span gt string stringByUnescapingHTML Which returns span Foo span Hopefully unescaping all other HTML entities as well and even ASCII codes like Ӓ and the like. Is there any methods in Cocoa Touch UIKit to do..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now the same way . Anyways nowadays 2013 this isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you now really should use UIDevice identifierForVendor or create..
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 not to generate a warning since the pointer types don't match . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have to change things a bit SEL selector NSSelectorFromString @ processRegion ofView IMP imp _controller methodForSelector selector CGRect func id.. then release when it is no longer used standard assumption Release new object values when no longer used methods in the init copy family or attributed with ns_returns_retained Do nothing assume returned object value will be valid in local scope until inner most release pool is drained attributed with ns_returns_autoreleased The.. with ns_returns_retained Do nothing assume returned object value will be valid in local scope until inner most release pool is drained attributed with ns_returns_autoreleased The call to methodForSelector assumes that the return value of the method it's calling is an object but does not retain release it. So you could end..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on @ 5.0 code here if SYSTEM_VERSION_GREATER_THAN_OR_EQUAL_TO @ 6.0 code here Outdated version below to get OS version UIDevice currentDevice systemVersion returns string which can be turned into int float via NSString floatValue NSString intValue like this Both values floatValue intValue will be stripped due to its type 5.0.1..
Reading HTML content from a UIWebView http://stackoverflow.com/questions/992348/reading-html-content-from-a-uiwebview stringWithContentsOfURL encoding error method of NSString it lets you pass in a URL as an instance of NSURL which can easily be instantiated from NSString and returns a string with the complete contents of the page at that URL. For example NSString googleString @ http www.google.com NSURL googleURL NSURL URLWithString googleString..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an comment. Use NSCalendar method NSDateComponents components NSUInteger unitFlags fromDate NSDate startingDate toDate NSDate resultDate options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation . Create 2 NSDate whose difference..
Best way to serialize a NSData into an hexadeximal string http://stackoverflow.com/questions/1305225/best-way-to-serialize-a-nsdata-into-an-hexadeximal-string this question This is a category applied to NSData that I wrote. It returns a hexadecimal NSString representing the NSData where the data can be any length. Returns an empty string if NSData is empty. NSData Conversion.h #import Foundation Foundation.h @interface NSData NSData_Conversion #pragma mark String Conversion NSString.. @end NSData Conversion.m #import NSData Conversion.h @implementation NSData NSData_Conversion #pragma mark String Conversion NSString hexadecimalString Returns hexadecimal string of NSData. Empty string if data is empty. const unsigned char dataBuffer const unsigned char self bytes if dataBuffer return NSString string..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project but also with Expected ' ' before NSManagedObjectContext although it seems like the parenthesis are correct ... #pragma mark #pragma mark Core Data stack Returns the managed object context for the application. If the context doesn't already exist it is created and bound to the persistent store coordinator for the application... nil managedObjectContext NSManagedObjectContext alloc init managedObjectContext setPersistentStoreCoordinator coordinator return managedObjectContext Returns the managed object model for the application. If the model doesn't already exist it is created by merging all of the models found in application bundle. NSManagedObjectModel.. if managedObjectModel nil return managedObjectModel managedObjectModel NSManagedObjectModel mergedModelFromBundles nil retain return managedObjectModel Returns the persistent store coordinator for the application. If the coordinator doesn't already exist it is created and the application's store added to it. NSPersistentStoreCoordinator..
How to create a GUID/UUID using the iPhone SDK http://stackoverflow.com/questions/427180/how-to-create-a-guid-uuid-using-the-iphone-sdk data that are all unique. Is there a way to do this with the iOS SDK iphone guid uuid share improve this question UIDevice currentDevice uniqueIdentifier Returns the Unique ID of your iPhone. EDIT This is now deprecated and apps are being rejected from the App Store for using it. The method below is now the preferred approach...
UIImagePickerController and extracting EXIF data from existing photos http://stackoverflow.com/questions/1238838/uiimagepickercontroller-and-extracting-exif-data-from-existing-photos After a deeper look this library seems to take NSData info as an input and the UIImagePickerController returns a UIImage after taking a snapshot. In theory if we use the selected from the UIkit category for UIImage NSData UIImageJPEGRepresentation.. tagValue NSNumber numberWithInt EXIF_Model .... .... The retrieving of tags definition is OK but all tag values returns nil In case you want to give a try to the library you need to define a global variable to get it running as explained in..
How to change the device orientation programmatically in iOS 6 http://stackoverflow.com/questions/12650137/how-to-change-the-device-orientation-programmatically-in-ios-6 a new method to get this thing done in a much cleaner fashion. You use supportedInterfaceOrientations instead. It returns all of the interface orientations that the view controller supports a mask of interface orientation values. UIInterfaceOrientationMask..
How to get the RGB values for a pixel on an image on the iphone http://stackoverflow.com/questions/144250/how-to-get-the-rgb-values-for-a-pixel-on-an-image-on-the-iphone with alpha in this version typedef struct RGBAPixel byte red byte green byte blue byte alpha RGBAPixel Bitmap function returns pre calculated RGBA divide RGB by A to get unmodified RGB RGBAPixel bitmap NSLog @ Returning bitmap representation of UIImage...
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to force NSLocalizedString to use a specific language on iPhone NSLocalizedString returns the string in the language of the iPhone. Is it possible to force NSLocalizedString to use a specific language to have the.. the AppleLanguages key in NSUserDefaults to determine what the user's settings for preferred languages are. This returns an array of language codes with the first one being the one set by the user for their phone and the subsequent ones used..
http://stackoverflow.com/questions/3504173/detect-retina-display though we know that device does not contain a Retina display. Apple changed this behavior in iOS4.2 for the iPad it returns 1.0 in both 1x and 2x modes. You can test this yourself in the simulator. I test for the displayLinkWithTarget selector..
NSDictionary with ordered keys http://stackoverflow.com/questions/376090/nsdictionary-with-ordered-keys values of the array and make sure they always correspond. Currently I just use myDictionary allKeys but obviously this returns them in an arbitrary non guaranteed order. Is there a data structure in Objective C that I'm missing Does anyone have any..
display image from URL retrieved from ALAsset in iPhone http://stackoverflow.com/questions/3837115/display-image-from-url-retrieved-from-alasset-in-iphone a little but if you think of them as notification selectors or callbacks it kind of helps. Also when findLargeImage returns the resultblock wont have run yet as its a callback. So largeImage wont be valid yet. largeImage needs to be an instance..
How to determine the content size of a UIWebView? http://stackoverflow.com/questions/3936041/how-to-determine-the-content-size-of-a-uiwebview out the CGSize of the content to resize my parent views appropriately. The obvious sizeThatFits unfortunately just returns the current frame size of the webView. iphone cocoa touch uiwebview share improve this question It turned out that..
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 the device is locked to a single application until the payload is removed. The home button is disabled and the device returns to the specified application automatically upon wake or reboot. Read more about it here https developer.apple.com library..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell to the NSMutableDictionary to retrieve the image for that particular cell based on your unique key for it . If it returns nil that means that the image is missing from the cache and you need your background image loading thread to go retrieve..
iOS: how to perform an HTTP POST request? http://stackoverflow.com/questions/5537297/ios-how-to-perform-an-http-post-request NSData sendSynchronousRequest NSURLRequest request returningResponse NSURLResponse response error NSError error This returns a NSData variable that you can process. IMPORTANT Remember to kick off the synchronous request in a separate thread to avoid..
http://stackoverflow.com/questions/5757386/how-to-mask-an-uiimageview mask UIImage maskedImage UIImage imageWithCGImage maskedImageRef CGImageRelease mask CGImageRelease maskedImageRef returns new image with mask applied return maskedImage After you provided your code I have added some numbers as comments to it..
Objective C HTML escape/unescape http://stackoverflow.com/questions/659602/objective-c-html-escape-unescape is something like this psuedo code NSString string @ lt span gt Foo lt span gt string stringByUnescapingHTML Which returns span Foo span Hopefully unescaping all other HTML entities as well and even ASCII codes like Ӓ and the like. Is there..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now isn't necessary any more except if you need a stable device identifier on iOS 6.0. Edit 4 In iOS 7 Apple now always returns a fixed value when querying the MAC to specifically thwart the MAC as base for an ID scheme. So you now really should use..
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 types don't match . Finally you call the function pointer. Complex Example When the selector takes arguments or returns a value you'll have to change things a bit SEL selector NSSelectorFromString @ processRegion ofView IMP imp _controller.. assumption Release new object values when no longer used methods in the init copy family or attributed with ns_returns_retained Do nothing assume returned object value will be valid in local scope until inner most release pool is drained attributed.. assume returned object value will be valid in local scope until inner most release pool is drained attributed with ns_returns_autoreleased The call to methodForSelector assumes that the return value of the method it's calling is an object but does..
How can we programmatically detect which iOS version is device running on? [duplicate] http://stackoverflow.com/questions/7848766/how-can-we-programmatically-detect-which-ios-version-is-device-running-on @ 6.0 code here Outdated version below to get OS version UIDevice currentDevice systemVersion returns string which can be turned into int float via NSString floatValue NSString intValue like this Both values floatValue intValue..
Reading HTML content from a UIWebView http://stackoverflow.com/questions/992348/reading-html-content-from-a-uiwebview of NSString it lets you pass in a URL as an instance of NSURL which can easily be instantiated from NSString and returns a string with the complete contents of the page at that URL. For example NSString googleString @ http www.google.com NSURL..
Correcting floating point numbers http://stackoverflow.com/questions/10049533/correcting-floating-point-numbers Also I must mention that this occurs quite frequently when using scientific notation. 2.3 10^23 1.452 10^23 Returns 3.339599999999999999e 46 And finally sometimes the number that is returned is ex. 123.0000000000001 Thanks for the help..
How do I break down an NSTimeInterval into year, months, days, hours, minutes and seconds on iPhone? http://stackoverflow.com/questions/1237778/how-do-i-break-down-an-nstimeinterval-into-year-months-days-hours-minutes-an components NSUInteger unitFlags fromDate NSDate startingDate toDate NSDate resultDate options NSUInteger opts Returns as an NSDateComponents object using specified components the difference between two supplied dates . From the API documentation..
http://stackoverflow.com/questions/13023936/orientation-issue-in-ios-6 supportedInterfaceOrientations return UIInterfaceOrientationMaskPortrait UIInterfaceOrientationMaskPortraitUpsideDown Returns interface orientation masks. UIInterfaceOrientation preferredInterfaceOrientationForPresentation return UIInterfaceOrientationPortrait..
Best way to serialize a NSData into an hexadeximal string http://stackoverflow.com/questions/1305225/best-way-to-serialize-a-nsdata-into-an-hexadeximal-string to NSData that I wrote. It returns a hexadecimal NSString representing the NSData where the data can be any length. Returns an empty string if NSData is empty. NSData Conversion.h #import Foundation Foundation.h @interface NSData NSData_Conversion.. NSData Conversion.h @implementation NSData NSData_Conversion #pragma mark String Conversion NSString hexadecimalString Returns hexadecimal string of NSData. Empty string if data is empty. const unsigned char dataBuffer const unsigned char self bytes..
http://stackoverflow.com/questions/1342674/motionbegan-not-working BOOL textFieldShouldReturn UITextField theTextField Hides the keyboard theTextField resignFirstResponder Returns first responder status to self so that shake events register here self becomeFirstResponder return YES Implement motionEnded..
Adding Core Data to existing iPhone project http://stackoverflow.com/questions/2032818/adding-core-data-to-existing-iphone-project although it seems like the parenthesis are correct ... #pragma mark #pragma mark Core Data stack Returns the managed object context for the application. If the context doesn't already exist it is created and bound to the persistent.. alloc init managedObjectContext setPersistentStoreCoordinator coordinator return managedObjectContext Returns the managed object model for the application. If the model doesn't already exist it is created by merging all of the models.. managedObjectModel managedObjectModel NSManagedObjectModel mergedModelFromBundles nil retain return managedObjectModel Returns the persistent store coordinator for the application. If the coordinator doesn't already exist it is created and the application's..
How do I query the iPhone's current IP address? http://stackoverflow.com/questions/260484/how-do-i-query-the-iphones-current-ip-address address the one assigned e.g. by DHCP to your device what you can usually do is to resolve the device's hostname i.e. Returns the local IP or NULL on failure. const char GetLocalIP char buf 256 if gethostname buf sizeof buf return NULL struct hostent..
http://stackoverflow.com/questions/3791067/check-url-validity iPhone Simulator 4.1. Thank you. iphone nsurl share improve this question According to NSURL Class Reference Returns whether the resource pointed to by a file URL can be reached. ... Discussion This method is unimplemented in iOS so it performs..
send RSA public key to iphone and use it to encrypt http://stackoverflow.com/questions/4211484/send-rsa-public-key-to-iphone-and-use-it-to-encrypt isn't though it can be done . You've added Security.framework to your project and you #import Security Security.h . Returns an NSData of the encrypted text or nil if encryption was unsuccessful. Takes the X.509 certificate as NSData from dataWithContentsOfFile..
How to create a GUID/UUID using the iPhone SDK http://stackoverflow.com/questions/427180/how-to-create-a-guid-uuid-using-the-iphone-sdk to do this with the iOS SDK iphone guid uuid share improve this question UIDevice currentDevice uniqueIdentifier Returns the Unique ID of your iPhone. EDIT This is now deprecated and apps are being rejected from the App Store for using it. The..
Change the UITextView Text Direction http://stackoverflow.com/questions/4905500/change-the-uitextview-text-direction code ReverseTextVC.h @interface ReverseTextVC UIViewController UITextViewDelegate NSMutableArray _lines UITextView _tv Returns reversed text. The lines is also updated. This array contains all lines. You should pass this array again if you want to..
How to get URL for application's document directory iPhone http://stackoverflow.com/questions/5608091/how-to-get-url-for-applications-document-directory-iphone need to know some other methods objects to call. I would also appriciate documentation for future reference. Thank you Returns the URL to the application's Documents directory. NSURL applicationDocumentsDirectory return NSFileManager defaultManager.. NSDocumentDirectory inDomains NSUserDomainMask lastObject EDIT problem solved. Updated post with answer. Returns the URL to the application's Documents directory. NSURL applicationDocumentsDirectory NSArray searchPaths NSSearchPathForDirectoriesInDomains..
How to measure noise or sound and displays in dB(A) in iphone? http://stackoverflow.com/questions/6183599/how-to-measure-noise-or-sound-and-displays-in-dba-in-iphone
Converting NSData to NSString in Objective c http://stackoverflow.com/questions/6411965/converting-nsdata-to-nsstring-in-objective-c bytes in data into Unicode characters using encoding. The returned object may be different from the original receiver. Returns nil if the initialization fails for some reason for example if data does not represent valid data for encoding . You should..
AESCrypt decryption between iOS and PHP http://stackoverflow.com/questions/6461419/aescrypt-decryption-between-ios-and-php NSString encryptedString @ Hello AES256EncryptWithKey @ a16byteslongkey NSLog @ The strign encrypted @ encryptedString Returns the string encrypted 7opqbb7sEVNoXplyQv X8g And here is my PHP code for decryption function decrypt_data data key return..
|