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2014/10/15 ¤U¤È 10:05:46
iphone Programming Glossary: createsHow to convert NSArray to NSData? http://stackoverflow.com/questions/1286212/how-to-convert-nsarray-to-nsdata a very simple array strings for instance you may want to use NSPropertyListSerialization which creates a bit simpler property list NSString error NSData data NSPropertyListSerialization dataFromPropertyList..
How to retrieve user's current city name? http://stackoverflow.com/questions/1382900/how-to-retrieve-users-current-city-name current coordinates you need to use MKReverseGeoCoder to find your location. void viewDidLoad this creates the CCLocationManager that will find your current location CLLocationManager locationManager CLLocationManager.. manager didUpdateToLocation CLLocation newLocation fromLocation CLLocation oldLocation this creates a MKReverseGeocoder to find a placemark using the found coordinates MKReverseGeocoder geoCoder MKReverseGeocoder..
http://stackoverflow.com/questions/2032826/property-synthesize declares a property in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari to disable phone number linking in Mobile Safari Safari on iPhone automatically creates links for strings of digits that appear to the telephone numbers. I am writing a web page containing..
Grid view in iPhone SDK [closed] http://stackoverflow.com/questions/2265293/grid-view-in-iphone-sdk The only way I can think of doing this is by subclassing UITableView and having a custom cell that creates the 2 or 3 items. This however seems messy and I am sure that there is a better way. A typical item..
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer c cocoa touch share improve this question You can set your controller or view whichever creates the gesture recognizer as the delegate of the UITapGestureRecognizer . Then in the delegate you can..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework the 256th roots of unity of which there are 256 that will save us time later. Note that this call creates an array which will need to be released later to avoid leaking setupReal vDSP_create_fftsetup log2n..
Play sound on iPhone even in silent mode http://stackoverflow.com/questions/3740528/play-sound-on-iphone-even-in-silent-mode sound on iPhone even in silent mode I want to make an application which creates sound music or system sound when an iPhone is in silent mode. Is it possible to play any type of sound..
Do you need to create an NSAutoreleasePool within a block in GCD? http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd OperationQueues OperationQueues.html# apple_ref doc uid TP40008091 CH102 SW1 If your block creates more than a few Objective C objects you might want to enclose parts of your block ™s code in an @autorelease..
How to capture UIView to UIImage without loss of quality on retina display http://stackoverflow.com/questions/4334233/how-to-capture-uiview-to-uiimage-without-loss-of-quality-on-retina-display to UIImage without loss of quality on retina display My code works fine for normal devices but creates blurry images on retina devices. Does anybody know a solution for my issue UIImage imageWithView UIView..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now situation where you want to have a view controller 1 starts some function 2 which incrementally 3 creates a more and more complicated artwork and 4 at each step you setNeedsDisplay wrong 5 until all the work..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user scrolls fast. I am getting images only when scrolling completely stops and clearing..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil app. It is stored in the ipa file. Edit Just to clarify the PHP method you create a php file that creates plist files. Copy a standard plist file created from an enterprise distribution build then in your php..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk UIImage and do the following NSData dataForJPEGFile UIImageJPEGRepresentation theImage 0.6 This creates an NSData instance containing the raw bytes for a JPEG image at a 60 quality setting. The contents of..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate implementors would have..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable @end @implementation APerson @synthesize name use name _name for legacy runtime @end @synthesize creates in this case those two methods not 100 accurate NSString name return _name copy autorelease void setName..
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 an app. Original Answer I figured this out after some heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect wobbling effect. I've looked at using CABasicAnimation and CAKeyframeAnimation. CABasicAnimation creates a jitter every time it repeats because it jumps to the from position and doesn't interpolate back. CAKeyframeAnimation..
Faster alternative to glReadPixels in iPhone OpenGL ES 2.0 http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0 renderTexture 0 This pulls a pixel buffer from the pool associated with my asset writer input creates and associates a texture with it and uses that texture as a target for my FBO. Once I've rendered a..
How to convert NSArray to NSData? http://stackoverflow.com/questions/1286212/how-to-convert-nsarray-to-nsdata format but can handle a very wide range of objects. If you have a very simple array strings for instance you may want to use NSPropertyListSerialization which creates a bit simpler property list NSString error NSData data NSPropertyListSerialization dataFromPropertyList array format NSPropertyListBinaryFormat_v1_0 errorDescription..
How to retrieve user's current city name? http://stackoverflow.com/questions/1382900/how-to-retrieve-users-current-city-name that will find your current coordinates. With the current coordinates you need to use MKReverseGeoCoder to find your location. void viewDidLoad this creates the CCLocationManager that will find your current location CLLocationManager locationManager CLLocationManager alloc init autorelease locationManager.delegate self.. finds your current location void locationManager CLLocationManager manager didUpdateToLocation CLLocation newLocation fromLocation CLLocation oldLocation this creates a MKReverseGeocoder to find a placemark using the found coordinates MKReverseGeocoder geoCoder MKReverseGeocoder alloc initWithCoordinate newLocation.coordinate..
http://stackoverflow.com/questions/2032826/property-synthesize improve this question You asked for simple terms @property declares a property in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter implemention like getMyString or setMyString..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari to disable phone number linking in Mobile Safari Safari on iPhone automatically creates links for strings of digits that appear to the telephone numbers. I am writing a web page containing an IP address and Safari is turning that into a phone number..
Grid view in iPhone SDK [closed] http://stackoverflow.com/questions/2265293/grid-view-in-iphone-sdk like 2 items wide in portrait and 3 wide in landscape. The only way I can think of doing this is by subclassing UITableView and having a custom cell that creates the 2 or 3 items. This however seems messy and I am sure that there is a better way. A typical item will have a picture label and button nothing too complicated...
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer a behavior like the fullscreen vide controls . iphone objective c cocoa touch share improve this question You can set your controller or view whichever creates the gesture recognizer as the delegate of the UITapGestureRecognizer . Then in the delegate you can implement gestureRecognizer shouldReceiveTouch . In your implementation..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework 256 samples or 'harmonics' or 'terms' if we pre calculate the 256th roots of unity of which there are 256 that will save us time later. Note that this call creates an array which will need to be released later to avoid leaking setupReal vDSP_create_fftsetup log2n FFT_RADIX2 It's worth noting that if we set log2n to eg 8 you..
Play sound on iPhone even in silent mode http://stackoverflow.com/questions/3740528/play-sound-on-iphone-even-in-silent-mode sound on iPhone even in silent mode I want to make an application which creates sound music or system sound when an iPhone is in silent mode. Is it possible to play any type of sound whether music or system tones when it is silent mode iphone..
Do you need to create an NSAutoreleasePool within a block in GCD? http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd ios DOCUMENTATION General Conceptual ConcurrencyProgrammingGuide OperationQueues OperationQueues.html# apple_ref doc uid TP40008091 CH102 SW1 If your block creates more than a few Objective C objects you might want to enclose parts of your block ™s code in an @autorelease block to handle the memory management for those objects...
How to capture UIView to UIImage without loss of quality on retina display http://stackoverflow.com/questions/4334233/how-to-capture-uiview-to-uiimage-without-loss-of-quality-on-retina-display to capture UIView to UIImage without loss of quality on retina display My code works fine for normal devices but creates blurry images on retina devices. Does anybody know a solution for my issue UIImage imageWithView UIView view UIGraphicsBeginImageContext view.bounds.size view.layer..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now processing is done. This can be infuriating in the common situation where you want to have a view controller 1 starts some function 2 which incrementally 3 creates a more and more complicated artwork and 4 at each step you setNeedsDisplay wrong 5 until all the work is done 6 Of course when you do that all that happens is that..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell they are not loaded again. Can someone please tell me how to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user scrolls fast. I am getting images only when scrolling completely stops and clearing out the cache on memory warning. But the app invariably..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil provision file as it installs itself when you install the app. It is stored in the ipa file. Edit Just to clarify the PHP method you create a php file that creates plist files. Copy a standard plist file created from an enterprise distribution build then in your php file set the headers like this pathToAddFi installers . _GET..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk if you want to store these images as JPEGs you can take your UIImage and do the following NSData dataForJPEGFile UIImageJPEGRepresentation theImage 0.6 This creates an NSData instance containing the raw bytes for a JPEG image at a 60 quality setting. The contents of that NSData instance can then be written to disk or cached..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c NSObject @optional void windowDidMove NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate implementors would have to adopt this protocol @interface MyDelegate NSWindowNotifications..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable for legacy runtime @property readwrite NSString name @end @implementation APerson @synthesize name use name _name for legacy runtime @end @synthesize creates in this case those two methods not 100 accurate NSString name return _name copy autorelease void setName NSString value value retain _name release _name value It's..
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 works App Store terms won't allow you to use this code within an app. Original Answer I figured this out after some heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used HTTP Client to check what I was doing...
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect is to slightly rotate the image back and forth to create the wobbling effect. I've looked at using CABasicAnimation and CAKeyframeAnimation. CABasicAnimation creates a jitter every time it repeats because it jumps to the from position and doesn't interpolate back. CAKeyframeAnimation seems like the solution except that I can't..
Faster alternative to glReadPixels in iPhone OpenGL ES 2.0 http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0 GL_COLOR_ATTACHMENT0 GL_TEXTURE_2D CVOpenGLESTextureGetName renderTexture 0 This pulls a pixel buffer from the pool associated with my asset writer input creates and associates a texture with it and uses that texture as a target for my FBO. Once I've rendered a frame I lock the base address of the pixel buffer CVPixelBufferLockBaseAddress..
How to convert NSArray to NSData? http://stackoverflow.com/questions/1286212/how-to-convert-nsarray-to-nsdata of objects. If you have a very simple array strings for instance you may want to use NSPropertyListSerialization which creates a bit simpler property list NSString error NSData data NSPropertyListSerialization dataFromPropertyList array format NSPropertyListBinaryFormat_v1_0..
How to retrieve user's current city name? http://stackoverflow.com/questions/1382900/how-to-retrieve-users-current-city-name With the current coordinates you need to use MKReverseGeoCoder to find your location. void viewDidLoad this creates the CCLocationManager that will find your current location CLLocationManager locationManager CLLocationManager alloc init.. CLLocationManager manager didUpdateToLocation CLLocation newLocation fromLocation CLLocation oldLocation this creates a MKReverseGeocoder to find a placemark using the found coordinates MKReverseGeocoder geoCoder MKReverseGeocoder alloc initWithCoordinate..
http://stackoverflow.com/questions/2032826/property-synthesize terms @property declares a property in your class header @property nonatomic retain NSString myString @synthesize creates your setter and getter for your property accessor methods Without synthesize you have to write your own setter and getter..
How to disable phone number linking in Mobile Safari? http://stackoverflow.com/questions/226131/how-to-disable-phone-number-linking-in-mobile-safari to disable phone number linking in Mobile Safari Safari on iPhone automatically creates links for strings of digits that appear to the telephone numbers. I am writing a web page containing an IP address and Safari..
Grid view in iPhone SDK [closed] http://stackoverflow.com/questions/2265293/grid-view-in-iphone-sdk wide in landscape. The only way I can think of doing this is by subclassing UITableView and having a custom cell that creates the 2 or 3 items. This however seems messy and I am sure that there is a better way. A typical item will have a picture..
UIButton inside a view that has a UITapGestureRecognizer http://stackoverflow.com/questions/3344341/uibutton-inside-a-view-that-has-a-uitapgesturerecognizer . iphone objective c cocoa touch share improve this question You can set your controller or view whichever creates the gesture recognizer as the delegate of the UITapGestureRecognizer . Then in the delegate you can implement gestureRecognizer..
Using the apple FFT and accelerate Framework http://stackoverflow.com/questions/3398753/using-the-apple-fft-and-accelerate-framework if we pre calculate the 256th roots of unity of which there are 256 that will save us time later. Note that this call creates an array which will need to be released later to avoid leaking setupReal vDSP_create_fftsetup log2n FFT_RADIX2 It's worth..
Play sound on iPhone even in silent mode http://stackoverflow.com/questions/3740528/play-sound-on-iphone-even-in-silent-mode sound on iPhone even in silent mode I want to make an application which creates sound music or system sound when an iPhone is in silent mode. Is it possible to play any type of sound whether music or..
Do you need to create an NSAutoreleasePool within a block in GCD? http://stackoverflow.com/questions/4141123/do-you-need-to-create-an-nsautoreleasepool-within-a-block-in-gcd ConcurrencyProgrammingGuide OperationQueues OperationQueues.html# apple_ref doc uid TP40008091 CH102 SW1 If your block creates more than a few Objective C objects you might want to enclose parts of your block ™s code in an @autorelease block to handle..
How to capture UIView to UIImage without loss of quality on retina display http://stackoverflow.com/questions/4334233/how-to-capture-uiview-to-uiimage-without-loss-of-quality-on-retina-display to capture UIView to UIImage without loss of quality on retina display My code works fine for normal devices but creates blurry images on retina devices. Does anybody know a solution for my issue UIImage imageWithView UIView view UIGraphicsBeginImageContext..
Is there a way to make drawRect work right NOW? http://stackoverflow.com/questions/4739748/is-there-a-way-to-make-drawrect-work-right-now in the common situation where you want to have a view controller 1 starts some function 2 which incrementally 3 creates a more and more complicated artwork and 4 at each step you setNeedsDisplay wrong 5 until all the work is done 6 Of course..
Lazy load images in UITableViewCell http://stackoverflow.com/questions/531482/lazy-load-images-in-uitableviewcell please tell me how to duplicate this behavior. Thanks. Edit Trying to cache images in an NSMutableDictionary object creates problems when the user scrolls fast. I am getting images only when scrolling completely stops and clearing out the cache..
How to distribute ios application wirelessly without managing UDIDs and recompilation http://stackoverflow.com/questions/5546581/how-to-distribute-ios-application-wirelessly-without-managing-udids-and-recompil when you install the app. It is stored in the ipa file. Edit Just to clarify the PHP method you create a php file that creates plist files. Copy a standard plist file created from an enterprise distribution build then in your php file set the headers..
What's the easiest way to resize/optimize an image size with the iPhone SDK? http://stackoverflow.com/questions/612131/whats-the-easiest-way-to-resize-optimize-an-image-size-with-the-iphone-sdk you can take your UIImage and do the following NSData dataForJPEGFile UIImageJPEGRepresentation theImage 0.6 This creates an NSData instance containing the raw bytes for a JPEG image at a 60 quality setting. The contents of that NSData instance..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c NSNotification notification ... other methods here @end This is analogous to an interface or abstract base class as it creates a special type for your delegate NSWindowNotifications in this case. Delegate implementors would have to adopt this protocol..
Property vs. instance variable http://stackoverflow.com/questions/719788/property-vs-instance-variable NSString name @end @implementation APerson @synthesize name use name _name for legacy runtime @end @synthesize creates in this case those two methods not 100 accurate NSString name return _name copy autorelease void setName NSString value..
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 use this code within an app. Original Answer I figured this out after some heavy API research. Below is a method that creates an HTTP POST to send to Paypal and makes an NSURLRequest. You can fill in the appropriate string format variables. I used..
how to create iphone's wobbling icon effect? http://stackoverflow.com/questions/929364/how-to-create-iphones-wobbling-icon-effect forth to create the wobbling effect. I've looked at using CABasicAnimation and CAKeyframeAnimation. CABasicAnimation creates a jitter every time it repeats because it jumps to the from position and doesn't interpolate back. CAKeyframeAnimation seems..
Faster alternative to glReadPixels in iPhone OpenGL ES 2.0 http://stackoverflow.com/questions/9550297/faster-alternative-to-glreadpixels-in-iphone-opengl-es-2-0 CVOpenGLESTextureGetName renderTexture 0 This pulls a pixel buffer from the pool associated with my asset writer input creates and associates a texture with it and uses that texture as a target for my FBO. Once I've rendered a frame I lock the base..
Basic array comparison algorithm http://stackoverflow.com/questions/11183008/basic-array-comparison-algorithm NSArray arrayWithObjects NSNumber numberWithInt 123 NSNumber numberWithInt 456 NSNumber numberWithInt 789 nil Creates employee objects Employee employee1 Employee alloc init employee1.ID 123 employee1.name @ John Smith Employee employee2..
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 NO Now wait for the URL connection to call us back. Uploader Private postRequestWithURL boundry data Creates a HTML POST request. Results The HTML POST request. Side effects None NSURLRequest postRequestWithURL NSURL url IN..
iOS MVC - Passing data back and forth to view controllers and model http://stackoverflow.com/questions/15239499/ios-mvc-passing-data-back-and-forth-to-view-controllers-and-model following structure Model class Retrieves processes and and saves data to and from NSUserDefaults RootViewController Creates an instance of the Model object and asks the model to return all the Events objects from NSUserDefaults then displays them..
how to generate crash report using code like crash report provided by Apple http://stackoverflow.com/questions/15521494/how-to-generate-crash-report-using-code-like-crash-report-provided-by-apple of apps since 2009. Safe reliably creates standard format crash reports that can be symbolicated. KSCrash Pretty new. Creates standard format crash reports. Can connect to different server solutions. QuincyKit Client SDK and PHP based server component.. side symbolication. HockeyApp Paid plans 1 month trial. Uses PLCrashReporter under the hood all SDKs open source. Creates standard format crash reports. Server side symbolication. Disclaimer I am one of the Co Founders and developers of this..
Creating a left-arrow button (like UINavigationBar's “back” style) on a UIToolbar http://stackoverflow.com/questions/227078/creating-a-left-arrow-button-like-uinavigationbars-back-style-on-a-uitoolba code did the trick requires custom image in bundle should be combined with this answer. So here is additional code Creates a back button instead of default behaviour displaying title of previous screen UIBarButtonItem backButton UIBarButtonItem..
How do I format a text file to be read in using arrayWithContentsOfFile http://stackoverflow.com/questions/3011898/how-do-i-format-a-text-file-to-be-read-in-using-arraywithcontentsoffile create it and fill it up with data. From the docs arrayWithContentsOfFile id arrayWithContentsOfFile NSString aPath Creates and returns an array containing the contents of the file specified by aPath. The file identified by aPath must contain a..
uploading photo through programing in objective-c [duplicate] http://stackoverflow.com/questions/5801049/uploading-photo-through-programing-in-objective-c NO Now wait for the URL connection to call us back. Uploader Private postRequestWithURL boundry data Creates a HTML POST request. Results The HTML POST request. Side effects None NSURLRequest postRequestWithURL NSURL url IN..
iPhone - current date considering daylight saving http://stackoverflow.com/questions/6866725/iphone-current-date-considering-daylight-saving I do that I receive the GMT time not considering the daylight saving. This is what the docs say about the date command Creates and returns a new date set to the current date and time. Why Apple does that to us Why everything is so complex Is this..
Where would you place your SQLite database file in an iPhone app? http://stackoverflow.com/questions/717108/where-would-you-place-your-sqlite-database-file-in-an-iphone-app SQLite books code sample where this method is called from the application delegates appDidFinishLaunching method. Creates a writable copy of the bundled default database in the application Documents directory. void createEditableCopyOfDatabaseIfNeeded..
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