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2014/10/15 ¤U¤È 10:11:37
iphone Programming Glossary: myHow to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk some other websites if Google didn't respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString.. the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification notice called after network status changes..
How to programmatically send SMS on the iPhone? http://stackoverflow.com/questions/10848/how-to-programmatically-send-sms-on-the-iphone I'm sure you really want to have spams from your friends Try out this new game It roxxers my boxxers and yours will be too roxxersboxxers.com If you sign up now you'll get 3 200 RB points Apple.. Update iOS 5 includes messaging for iPod touch and iPad devices so while I've not yet tested this myself it may be that all iOS devices will be able to send SMS via MFMessageComposeViewController. If this..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like based URL Scheme for iPhone apps like YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile.. YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile Safari in case it is not. I read it is.. the service through the browser 2 Check the User Agent and in case it's Mobile Safari open a myprotocol URL to attempt to open the iPhone app and have it open Mobile iTunes to the download of the..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how sheet. UIToolbar Button on UIToolbar UIPicker Control I have included an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone main int argc const char argv NSAutoreleasePool pool NSAutoreleasePool alloc init NSString key @ my password NSString secret @ text to encrypt NSData plain secret dataUsingEncoding NSUTF8StringEncoding..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application.. that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report to start with not symbolicated...
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone CSOAP a SOAP library that depends on libxml2 which is included in the iPhone SDK . I've written my own SOAP framework for OSX. However it is not actively maintained and will require some time to port..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using.. UIGraphicsEndImageContext return newImage Example usage #import MYUtil.h UIImage myIcon MYUtil imageWithImage myUIImageInstance scaledToSize CGSizeMake 20 20 share improve this answer..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application controller can hand off processing of these documents to your own application. For example my application Molecules for which the source code is available handles the .pdb and .pdb.gz file types..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version headingAvailable Do something Apple uses systemVersion in their GLSprite sample code so my recommendation can't be absolute A system version of 3.1 or greater is required to use CADisplayLink...
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview to directly access one of the matrix cells of the CATransform3D m34 . Matrix math has never been my thing so I can't explain exactly why this works but it does. You'll need to set this value to a negative.. apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform.. should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c 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... 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 C this is what I naturally do... a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application http forums.macrumors.com showthread.php t 569311 but these would require me to render each glyph myself which is a bit too much like hard work especially for multi line text. I've also found posts that.. fontWithName size experiment I downloaded Harrowprint.tff downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint..
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 are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch Touch First of all I found this Objective C HTML escape unescape but it doesn't work for me. My encoded characters come from a RSS feed btw look like this #038 I searched all over the net and found..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs getting it to scroll when the user starts the drag outside the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how UIPickerView a Button in Action sheet How My application requires following things to be added in an action sheet. UIToolbar Button on UIToolbar..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview no way to provide a custom view for the callout bubble or to give it zero size or anything else. My idea was to override selectAnnotation deselectAnnotation in my MKMapViewDelegate and then draw my own..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview UIButton cell viewWithTag 1 button setTitle @ Edit forState UIControlStateNormal return cell My question is this in the buttonPressedAction method how do I know which button has been pressed. I've..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they..
How can I send mail from an iPhone application http://stackoverflow.com/questions/310946/how-can-i-send-mail-from-an-iphone-application MFMailComposeViewController alloc init controller.mailComposeDelegate self controller setSubject @ My Subject controller setMessageBody @ Hello there. isHTML NO if controller self presentModalViewController..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app created a general provisioning profile that will work with multiple apps and added a beta tester. My setup Xcode 3.2.1 iPhone SDK 3.1.3 Before you get started make sure that.. You can run the app on your.. file name Entitlements.plist . Save clean and build the project. In Groups Files find the folder MyApp Products and expand it. Right click the app and select Reveal in Finder . Zip the .app file and the..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone and UILabels On iPhone duplicate Possible Duplicate Manually drawing a gradient in iPhone apps My application needs to display text in either a View or Label but the back ground must be a gradient as..
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..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file kCFTypeDictionaryValueCallBacks CFDictionarySetValue myDictionary kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context.. kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context with the CFURL the CGRect we provide and the above defined dictionary pdfContext.. your situation depending on the formatting layout needs of your PDF. EDIT response to 1st comment My implementation is part of a commercial product meaning that I can't share the full code but I can give..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground UIApplication application UIApplication.. inform others to stop tasks if you like NSNotificationCenter defaultCenter postNotificationName @ MyApplicationEntersBackground object self do your background work here This is working without the VoIP..
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 string key PayloadIdentifier key string com.hbkill.kiosk string key PayloadOrganization key string My Org string key PayloadType key string com.apple.defaults.managed string key PayloadUUID key string B2D02E2D.. Lock string key PayloadIdentifier key string com.hbkill string key PayloadOrganization key string My Org string key PayloadType key string Configuration string key PayloadUUID key string 614D1FE3 F80D..
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 the easiest way to resize optimize an image size with the iPhone SDK My application is downloading a set of image files from the network and saving them to the local iPhone..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c be confusing is knowing the circumstances under which you should call retain and release . My general rule of thumb is that if I want to hang on to an object for some length of time if it's a member..
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 class whatever to minimize the effort to change everything without making the code to obscure My first instinct is to override NSDateFormatter with a version that would set the locale in the init method...
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk seems bad and while I could check to see for a response from some other websites if Google didn't respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com return URLString NULL YES NO.. wait for the notification 8 Set up the method for when the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification notice called after network status changes NetworkStatus internetStatus internetReachable currentReachabilityStatus..
How to programmatically send SMS on the iPhone? http://stackoverflow.com/questions/10848/how-to-programmatically-send-sms-on-the-iphone you'll be able to write games that spam people in the background. I'm sure you really want to have spams from your friends Try out this new game It roxxers my boxxers and yours will be too roxxersboxxers.com If you sign up now you'll get 3 200 RB points Apple has restrictions for automated or even partially automated.. and tutorials show how easy it is to implement. iOS 5 Update iOS 5 includes messaging for iPod touch and iPad devices so while I've not yet tested this myself it may be that all iOS devices will be able to send SMS via MFMessageComposeViewController. If this is the case then Apple is running an SMS server that sends..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like it possible to register a http domain based URL Scheme for iPhone apps like YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile Safari in case it is not. I read it is possible to create.. register a http domain based URL Scheme for iPhone apps like YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile Safari in case it is not. I read it is possible to create a unique protocol suffix for this and register.. idea 1 Use http URLs that open in any desktop browser and render the service through the browser 2 Check the User Agent and in case it's Mobile Safari open a myprotocol URL to attempt to open the iPhone app and have it open Mobile iTunes to the download of the app in case the attempt fails Not sure if this will work.....
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present fields once the keyboard is brought up Automatically jump by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView Does one go inside the other EDIT I..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how My application requires following things to be added in an action sheet. UIToolbar Button on UIToolbar UIPicker Control I have included an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve this question Update for iOS 7 Apple docs for UIActionSheet..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone application it wouldn't make sense to print such values. int main int argc const char argv NSAutoreleasePool pool NSAutoreleasePool alloc init NSString key @ my password NSString secret @ text to encrypt NSData plain secret dataUsingEncoding NSUTF8StringEncoding NSData cipher plain AES256EncryptWithKey key printf s n cipher..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted to the App Store and I have the dSYM.. I have all of these files together inside a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report to start with not symbolicated. Am I doing something wrong Any help would be greatly appreciated..
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone something that converts REST into SOAP for you You could try CSOAP a SOAP library that depends on libxml2 which is included in the iPhone SDK . I've written my own SOAP framework for OSX. However it is not actively maintained and will require some time to port to the iPhone you'll need to replace NSXML with TouchXML for..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize the image UIImage newImage image _imageScaledToSize..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application particular document types and any application that uses a document controller can hand off processing of these documents to your own application. For example my application Molecules for which the source code is available handles the .pdb and .pdb.gz file types if received via email or in another supported application...
http://stackoverflow.com/questions/3339722/check-iphone-ios-version provide methods to check device capabilities if CLLocationManager headingAvailable Do something Apple uses systemVersion in their GLSprite sample code so my recommendation can't be absolute A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer class is used as fallback when it isn't available...
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview The trick to get perspective working as described here is to directly access one of the matrix cells of the CATransform3D m34 . Matrix math has never been my thing so I can't explain exactly why this works but it does. You'll need to set this value to a negative fraction for your initial transform then apply your layer.. value to a negative fraction for your initial transform then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34.. then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34 1.0 500 rotationAndPerspectiveTransform CATransform3DRotate..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c 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 C this is what I naturally.. 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 C this is what I naturally do. In the header @interface Whatever NSString myStringProperty.. back in my learning Java in college days. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But in almost every example it is done like..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application http discussions.apple.com thread.jspa messageID 8304744 http forums.macrumors.com showthread.php t 569311 but these would require me to render each glyph myself which is a bit too much like hard work especially for multi line text. I've also found posts that say straight out that it's not possible but without justification.. so I'm looking for a definitive answer. EDIT failed UIFont fontWithName size experiment I downloaded Harrowprint.tff downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint size 20 which resulted in an exception being thrown...
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 ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread issues here too and presenting it while the scale is x1. CATiledLayer..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch character decoding in Objective C Cocoa Touch First of all I found this Objective C HTML escape unescape but it doesn't work for me. My encoded characters come from a RSS feed btw look like this #038 I searched all over the net and found related discussions but no fix for my particular encoding..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs clipsToBounds to NO as mhjoy stated. The trick part now is getting it to scroll when the user starts the drag outside the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that will contain the UIScrollView and it's subviews. Essentially..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how UIPickerView a Button in Action sheet How My application requires following things to be added in an action sheet. UIToolbar Button on UIToolbar UIPicker Control I have included an image to understand my requirements...
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing viewWillAppear not firing I've read numerous posts about people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView on that controller I would expect the added view s to be wired..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview access to the left and right ancillary callout views but no way to provide a custom view for the callout bubble or to give it zero size or anything else. My idea was to override selectAnnotation deselectAnnotation in my MKMapViewDelegate and then draw my own custom view by making a call to my custom annotation view...
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview addSubview button button release UIButton button UIButton cell viewWithTag 1 button setTitle @ Edit forState UIControlStateNormal return cell My question is this in the buttonPressedAction method how do I know which button has been pressed. I've considered using tags but I'm not sure this is the best route...
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention code the use is mixed. However I greatly prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they are ALL private given that why not name them in a way easier..
How can I send mail from an iPhone application http://stackoverflow.com/questions/310946/how-can-i-send-mail-from-an-iphone-application to send a message MFMailComposeViewController controller MFMailComposeViewController alloc init controller.mailComposeDelegate self controller setSubject @ My Subject controller setMessageBody @ Hello there. isHTML NO if controller self presentModalViewController controller animated YES controller release Then the user..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app instructions that Apple provides are here but here is how I created a general provisioning profile that will work with multiple apps and added a beta tester. My setup Xcode 3.2.1 iPhone SDK 3.1.3 Before you get started make sure that.. You can run the app on your own iPhone through Xcode. Step A Add devices to the Provisioning.. Code Signing again. After Code Signing Entitlements enter the file name Entitlements.plist . Save clean and build the project. In Groups Files find the folder MyApp Products and expand it. Right click the app and select Reveal in Finder . Zip the .app file and the .mobileprovision file and send the archive to your tester...
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone on UIView and UILabels On iPhone duplicate Possible Duplicate Manually drawing a gradient in iPhone apps My application needs to display text in either a View or Label but the back ground must be a gradient as opposed to a true color. Using a graphics program to create..
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..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file NULL 0 kCFTypeDictionaryKeyCallBacks kCFTypeDictionaryValueCallBacks CFDictionarySetValue myDictionary kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context with the CFURL the CGRect we provide and the above defined.. CFDictionarySetValue myDictionary kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context with the CFURL the CGRect we provide and the above defined dictionary pdfContext CGPDFContextCreateWithURL url pageRect myDictionary.. great for my needs. Again this may or may not make sense for your situation depending on the formatting layout needs of your PDF. EDIT response to 1st comment My implementation is part of a commercial product meaning that I can't share the full code but I can give a general outline I created a .xib file with a view and sized..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events expirationHandler from the long running task. Just try it out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground UIApplication application UIApplication app UIApplication sharedApplication it's better to move dispatch_block_t.. DISPATCH_QUEUE_PRIORITY_DEFAULT 0 ^ inform others to stop tasks if you like NSNotificationCenter defaultCenter postNotificationName @ MyApplicationEntersBackground object self do your background work here This is working without the VoIP hack. According to the documentation the expiration handler..
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 string key PayloadDisplayName key string Home Button Lock string key PayloadIdentifier key string com.hbkill.kiosk string key PayloadOrganization key string My Org string key PayloadType key string com.apple.defaults.managed string key PayloadUUID key string B2D02E2D BAC5 431B 8A29 4B91F71C9FC1 string key PayloadVersion.. Button string key PayloadDisplayName key string Home Button Lock string key PayloadIdentifier key string com.hbkill string key PayloadOrganization key string My Org string key PayloadType key string Configuration string key PayloadUUID key string 614D1FE3 F80D 4643 AF6B D10C4CC8737A string key PayloadVersion key integer..
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 the easiest way to resize optimize an image size with the iPhone SDK My application is downloading a set of image files from the network and saving them to the local iPhone disk. Some of those images are pretty big in size widths larger..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c also referencing the object will be unaffected. What can sometimes be confusing is knowing the circumstances under which you should call retain and release . My general rule of thumb is that if I want to hang on to an object for some length of time if it's a member variable in a class for instance then I need to make sure..
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 of this scenario. So any clever ideas for a macro overridden class whatever to minimize the effort to change everything without making the code to obscure My first instinct is to override NSDateFormatter with a version that would set the locale in the init method. Requires changing two lines the alloc init line and the..
How to check for an active Internet Connection on iPhone SDK? http://stackoverflow.com/questions/1083701/how-to-check-for-an-active-internet-connection-on-iphone-sdk for a response from some other websites if Google didn't respond it does seem wasteful and an unnecessary overhead on my application. BOOL connectedToInternet NSString URLString NSString stringWithContentsOfURL NSURL URLWithString @ http www.google.com.. the method for when the notification gets sent and set whatever checks or call whatever methods you may have set up in my case I just set a BOOL void checkNetworkStatus NSNotification notice called after network status changes NetworkStatus internetStatus..
How to programmatically send SMS on the iPhone? http://stackoverflow.com/questions/10848/how-to-programmatically-send-sms-on-the-iphone people in the background. I'm sure you really want to have spams from your friends Try out this new game It roxxers my boxxers and yours will be too roxxersboxxers.com If you sign up now you'll get 3 200 RB points Apple has restrictions for.. to implement. iOS 5 Update iOS 5 includes messaging for iPod touch and iPad devices so while I've not yet tested this myself it may be that all iOS devices will be able to send SMS via MFMessageComposeViewController. If this is the case then..
Is it possible to register a http+domain-based URL Scheme for iPhone apps, like YouTube and Maps? http://stackoverflow.com/questions/1108693/is-it-possible-to-register-a-httpdomain-based-url-scheme-for-iphone-apps-like register a http domain based URL Scheme for iPhone apps like YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile Safari in case it.. for iPhone apps like YouTube and Maps I'd like to have iOS to open URLs from my domain e.g. http martijnthe.nl with my app whenever the app is installed on the phone and with Mobile Safari in case it is not. I read it is possible to create.. browser and render the service through the browser 2 Check the User Agent and in case it's Mobile Safari open a myprotocol URL to attempt to open the iPhone app and have it open Mobile iTunes to the download of the app in case the attempt..
How to make a UITextField move up when keyboard is present http://stackoverflow.com/questions/1126726/how-to-make-a-uitextfield-move-up-when-keyboard-is-present Automatically jump by scrolling up or shortening I know that I need a UIScrollView . I've tried changing the class of my UIView to a UIScrollView but I'm still unable to scroll the textboxes up or down. Do I need both a UIView and a UIScrollView..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how to be added in an action sheet. UIToolbar Button on UIToolbar UIPicker Control I have included an image to understand my requirements. Could you please explain how this can be implemented iphone uipickerview share improve this question ..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone such values. int main int argc const char argv NSAutoreleasePool pool NSAutoreleasePool alloc init NSString key @ my password NSString secret @ text to encrypt NSData plain secret dataUsingEncoding NSUTF8StringEncoding NSData cipher plain..
Symbolicating iPhone App Crash Reports http://stackoverflow.com/questions/1460892/symbolicating-iphone-app-crash-reports iPhone App Crash Reports I'm looking to try and symbolicate my iPhone app's crash reports. I retrieved the crash reports from iTunes Connect. I have the application binary that I submitted.. a single directory that is indexed by spotlight. What now I have tried invoking symbolicatecrash crashreport.crash myApp.app.dSYM and it just outputs the same text that is in the crash report to start with not symbolicated. Am I doing something..
How to access SOAP services from iPhone http://stackoverflow.com/questions/204465/how-to-access-soap-services-from-iphone for you You could try CSOAP a SOAP library that depends on libxml2 which is included in the iPhone SDK . I've written my own SOAP framework for OSX. However it is not actively maintained and will require some time to port to the iPhone you'll..
The simplest way to resize an UIImage? http://stackoverflow.com/questions/2658738/the-simplest-way-to-resize-an-uiimage simplest way to resize an UIImage In my iPhone app I take a picture with the camera then I want to resize it to 290 390 pixels. I was using this method to resize..
How do I associate file types with an iPhone application? http://stackoverflow.com/questions/2774343/how-do-i-associate-file-types-with-an-iphone-application that uses a document controller can hand off processing of these documents to your own application. For example my application Molecules for which the source code is available handles the .pdb and .pdb.gz file types if received via email..
http://stackoverflow.com/questions/3339722/check-iphone-ios-version if CLLocationManager headingAvailable Do something Apple uses systemVersion in their GLSprite sample code so my recommendation can't be absolute A system version of 3.1 or greater is required to use CADisplayLink. The NSTimer class..
How do I apply a perspective transform to a UIView? http://stackoverflow.com/questions/347721/how-do-i-apply-a-perspective-transform-to-a-uiview as described here is to directly access one of the matrix cells of the CATransform3D m34 . Matrix math has never been my thing so I can't explain exactly why this works but it does. You'll need to set this value to a negative fraction for your.. transform then apply your layer rotation transforms to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity.. to that. You should also be able to do the following UIView myView self subviews objectAtIndex 0 CALayer layer myView.layer CATransform3D rotationAndPerspectiveTransform CATransform3DIdentity rotationAndPerspectiveTransform.m34 1.0 500..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c 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.. 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 C this is what I naturally do. In the header @interface.. So when I define a property in Objective C this is what I naturally do. In the header @interface Whatever NSString myStringProperty @property nonatomic copy NSString myStringProperty In the implementation @synthesize myStringProperty But..
Can I embed a custom font in an iPhone application? http://stackoverflow.com/questions/360751/can-i-embed-a-custom-font-in-an-iphone-application messageID 8304744 http forums.macrumors.com showthread.php t 569311 but these would require me to render each glyph myself which is a bit too much like hard work especially for multi line text. I've also found posts that say straight out that.. EDIT failed UIFont fontWithName size experiment I downloaded Harrowprint.tff downloaded from here and added it to my Resources directory and to the project. I then tried this code UIFont font UIFont fontWithName @ Harrowprint size 20 which..
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 PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a UIImage of a page in a separate thread issues here too and..
HTML character decoding in Objective-C / Cocoa Touch http://stackoverflow.com/questions/1105169/html-character-decoding-in-objective-c-cocoa-touch in Objective C Cocoa Touch First of all I found this Objective C HTML escape unescape but it doesn't work for me. My encoded characters come from a RSS feed btw look like this #038 I searched all over the net and found related discussions..
UIScrollView horizontal paging like Mobile Safari tabs http://stackoverflow.com/questions/1220354/uiscrollview-horizontal-paging-like-mobile-safari-tabs trick part now is getting it to scroll when the user starts the drag outside the range of the UIScrollView 's frame. My solution when I had to do this very recently was as follows Create a UIView subclass i.e. ClipView that will contain the..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how UIPickerView a Button in Action sheet How My application requires following things to be added in an action sheet. UIToolbar Button on UIToolbar UIPicker Control I have..
iPhone viewWillAppear not firing http://stackoverflow.com/questions/131062/iphone-viewwillappear-not-firing numerous posts about people having problems with viewWillAppear when you do not create your view hierarchy just right. My problem is I can't figure out what that means. If I create a RootViewController and call addSubView on that controller I..
How to customize the callout bubble for MKAnnotationView? http://stackoverflow.com/questions/1565828/how-to-customize-the-callout-bubble-for-mkannotationview callout views but no way to provide a custom view for the callout bubble or to give it zero size or anything else. My idea was to override selectAnnotation deselectAnnotation in my MKMapViewDelegate and then draw my own custom view by making..
Detecting which UIButton was pressed in a UITableView http://stackoverflow.com/questions/1802707/detecting-which-uibutton-was-pressed-in-a-uitableview release UIButton button UIButton cell viewWithTag 1 button setTitle @ Edit forState UIControlStateNormal return cell My question is this in the buttonPressedAction method how do I know which button has been pressed. I've considered using tags..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention prefer to not use the _ prefix and have two strong reasons 1 Some people think the _ is a good indicator of private . My take is that NO class local variable should be accessed without a setter getter property and thus they are ALL private given..
How can I send mail from an iPhone application http://stackoverflow.com/questions/310946/how-can-i-send-mail-from-an-iphone-application controller MFMailComposeViewController alloc init controller.mailComposeDelegate self controller setSubject @ My Subject controller setMessageBody @ Hello there. isHTML NO if controller self presentModalViewController controller animated..
How do you beta test an iphone app? http://stackoverflow.com/questions/40154/how-do-you-beta-test-an-iphone-app but here is how I created a general provisioning profile that will work with multiple apps and added a beta tester. My setup Xcode 3.2.1 iPhone SDK 3.1.3 Before you get started make sure that.. You can run the app on your own iPhone through.. enter the file name Entitlements.plist . Save clean and build the project. In Groups Files find the folder MyApp Products and expand it. Right click the app and select Reveal in Finder . Zip the .app file and the .mobileprovision..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone on UIView and UILabels On iPhone duplicate Possible Duplicate Manually drawing a gradient in iPhone apps My application needs to display text in either a View or Label but the back ground must be a gradient as opposed to a true..
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..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file kCFTypeDictionaryValueCallBacks CFDictionarySetValue myDictionary kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context with the CFURL the.. myDictionary kCGPDFContextTitle CFSTR My PDF File CFDictionarySetValue myDictionary kCGPDFContextCreator CFSTR My Name Create our PDF Context with the CFURL the CGRect we provide and the above defined dictionary pdfContext CGPDFContextCreateWithURL.. not make sense for your situation depending on the formatting layout needs of your PDF. EDIT response to 1st comment My implementation is part of a commercial product meaning that I can't share the full code but I can give a general outline..
iPhone - Backgrounding to poll for events http://stackoverflow.com/questions/4656214/iphone-backgrounding-to-poll-for-events task. Just try it out. Use your Console to see what happens... Have Fun Update 2 Sometimes simplifying things helps. My new approach is this one void applicationDidEnterBackground UIApplication application UIApplication app UIApplication sharedApplication.. 0 ^ inform others to stop tasks if you like NSNotificationCenter defaultCenter postNotificationName @ MyApplicationEntersBackground object self do your background work here This is working without the VoIP hack. According to..
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 Home Button Lock string key PayloadIdentifier key string com.hbkill.kiosk string key PayloadOrganization key string My Org string key PayloadType key string com.apple.defaults.managed string key PayloadUUID key string B2D02E2D BAC5 431B 8A29.. string Home Button Lock string key PayloadIdentifier key string com.hbkill string key PayloadOrganization key string My Org string key PayloadType key string Configuration string key PayloadUUID key string 614D1FE3 F80D 4643 AF6B D10C4CC8737A..
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 the easiest way to resize optimize an image size with the iPhone SDK My application is downloading a set of image files from the network and saving them to the local iPhone disk. Some of those..
Understanding reference counting with Cocoa and Objective-C http://stackoverflow.com/questions/6578/understanding-reference-counting-with-cocoa-and-objective-c What can sometimes be confusing is knowing the circumstances under which you should call retain and release . My general rule of thumb is that if I want to hang on to an object for some length of time if it's a member variable in a class..
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 for a macro overridden class whatever to minimize the effort to change everything without making the code to obscure My first instinct is to override NSDateFormatter with a version that would set the locale in the init method. Requires changing..
Fetched Properties - Predicate http://stackoverflow.com/questions/10951844/fetched-properties-predicate The sample project can be downloaded here . It's working except for the Predicate filter by Favorite books . MY QUESTION I'd like to filter my fetch in Books by only those books which are favorite. I tried using fetchRequest.predicate..
iOS save photo in an app specific album http://stackoverflow.com/questions/11972185/ios-save-photo-in-an-app-specific-album know how to create the album ALAssetsLibrary library ALAssetsLibrary alloc init library addAssetsGroupAlbumWithName @ MY APP NAME resultBlock ^ ALAssetsGroup group How to get the album URL failureBlock ^ NSError error Handle the error I want..
http://stackoverflow.com/questions/13679710/not-a-png-filcommand-copypng-emitted-errors-but-did-not-return-a-nonzero-exit-co not return a nonzero exit code to indicate failure iphone ios ipad ios6 default.png share improve this question MY ANSWER I had this problem. Two targets were added for same image. Goto project target Build Phases Copy Bundle Resources..
Facebook iOS SDK 3.1 post image on friends wall error http://stackoverflow.com/questions/13817590/facebook-ios-sdk-3-1-post-image-on-friends-wall-error trying to post UIImage on friends wall i`m getting error 5 Error HTTP status code 403 . if i try to post the image on MY wall its working well but not of one of my friends. My Code 1. before posting i am checking if the user has the right permissions..
UIScrollView Infinite Scrolling http://stackoverflow.com/questions/3430267/uiscrollview-infinite-scrolling view.frame.origin.x 3200 view.frame.origin.y view.frame.size.width view.frame.size.height add new data here at 0 0 MY CHECK NSLog @ f mainScrollView.contentOffset.x As the scrolling happens the log reads 1286.500000 1285.500000 1284.500000..
Change UITable Section Title color http://stackoverflow.com/questions/3715390/change-uitable-section-title-color UILabel alloc initWithFrame CGRectMake 0 0 300 44 tempLabel.backgroundColor UIColor clearColor tempLabel.text @ MY HEADER tempView addSubview tempLabel tempLabel release return tempView This will give you a redColor header. Change the..
AVAssetWritter does not work with audio http://stackoverflow.com/questions/5200077/avassetwritter-does-not-work-with-audio session addOutput output output.minFrameDuration CMTimeMake 1 30 dispatch_queue_t queue dispatch_queue_create MY QUEUE NULL output setSampleBufferDelegate self queue queue dispatch_release queue audio_output AVCaptureAudioDataOutput.. queue queue dispatch_release queue audio_output AVCaptureAudioDataOutput alloc init retain queue dispatch_queue_create MY QUEUE NULL AudioOutputBufferDelegate special_delegate AudioOutputBufferDelegate alloc init autorelease special_delegate..
Is there any framework to highlight text on pdf file after rendering on the iphone http://stackoverflow.com/questions/5335799/is-there-any-framework-to-highlight-text-on-pdf-file-after-rendering-on-the-iph more time with google I found some samples to search a word on pdf those are fastsamplepdf from github random ideas MY WORK I seen fastsample pdf code I understood only the parsing of the pdf to text using MFDocumentManager documentManagerWithFilePath..
Posting attachments with Facebook Graph API using iPhone SDK http://stackoverflow.com/questions/5568642/posting-attachments-with-facebook-graph-api-using-iphone-sdk attachment NSMutableDictionary params NSMutableDictionary dictionaryWithObjectsAndKeys @ post @ type @ MY MESSAGE @ message attachmentStr @ attachment nil _facebook requestWithGraphPath @ me feed andParams params andHttpMethod.. nil _facebook requestWithGraphPath @ me feed andParams params andHttpMethod @ POST andDelegate self This will publish MY MESSAGE but nothing else. The reason why I truly need this attachment is because of the properties element. Thanks so much..
Codesign error: Certificate identity appearing twice http://stackoverflow.com/questions/5932522/codesign-error-certificate-identity-appearing-twice after I submitted an app and installed a few certificates to sign the app. Quick Fix Open up KEYCHAIN ACCESS click on MY CERTIFICATES in there you will probably see iPhone Developer . You will probably see it TWICE Select the one with the earliest..
Checkbox in IPhone application http://stackoverflow.com/questions/650131/checkbox-in-iphone-application
Make subview rotate too when device is rotated iPhone/iPad http://stackoverflow.com/questions/6654741/make-subview-rotate-too-when-device-is-rotated-iphone-ipad shows up on ViewMain when the user presses the button EVERYTHING LOOKS GREAT BUT NOTE WHAT HAPPENS WHEN I ROTATE MY DEVICE I would like my subview anotherViewController.view to ratate as well. I don't mind if it is bigger than ViewMain..
iCloud basics and code sample [closed] http://stackoverflow.com/questions/7795629/icloud-basics-and-code-sample iCloud sandbox on my device which will work even if I am offline and a third one in the good old sandbox of my app... MY CODE A simple iCloud sample code This is loosely based on an example I found in the developer forum and on the WWDC session..
backing up prevent from the app in iCloud http://stackoverflow.com/questions/8092256/backing-up-prevent-from-the-app-in-icloud u_int8_t attrValue 1 int result setxattr filePath attrName attrValue sizeof attrValue 0 0 return result 0 MY QUESTIONS 1.can i use addSkipBackupAttributeToItemAtURL method directly to the documents directory to privent the iCloud..
How do I get the CoreData Debug argument to output to the console? http://stackoverflow.com/questions/822906/how-do-i-get-the-coredata-debug-argument-to-output-to-the-console to use this parameter in the CoreDataBooks application provided by Apple just in case there was some other issue in MY program. Even in Apple's example I get no SQL output in the console. Am I doing something wrong Is Apple's documentation..
iPhone: How to load a View using a nib file created with Interface Builder http://stackoverflow.com/questions/863321/iphone-how-to-load-a-view-using-a-nib-file-created-with-interface-builder a as UIView subclass defining some IBOutlets. Create using Interface Builder the Question1View.xib HERE IS WHERE MY PROBLEM PROBABLY ARE . I set the both the ViewController and the View to be of class Question1View. I link the outlets with..
HTML5 Web SQL Transactions skipped without error when touch triggered in IOS http://stackoverflow.com/questions/8741000/html5-web-sql-transactions-skipped-without-error-when-touch-triggered-in-ios to insert '9'. transaction successful for '9' store method called for '8'. transaction successful for '8' WHERE IS MY about to insert '8'. store method called for '7'. about to insert '7'. transaction successful for '7' ... This is because..
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