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2014/10/15 ¤U¤È 10:03:54
iphone Programming Glossary: areHow 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 if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration.. to the project you can get those here 3 Add @class Reachability to the .h file of where you are implementing the code 4 Create a couple instances to check in the interface section of the .h file Reachability.. checkNetworkStatus NSNotification notice 6 Add #import Reachability.h to the .m file where you are implementing the check 7 In the .m file of where you are implementing the check you can place this in..
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 resize However this doesn't automatically move up or center the lower text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will.. text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will need a scroll view if the contents you have now does not fit in the.. You will need a scroll view if the contents you have now does not fit in the iPhone screen. If you are adding the scroll view just to make the textfield scroll up when keyboard comes up then it's not needed...
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw this go to Run Show Breakpoints and create two global breakpoints I do them globally because they are so useful in all my applications . The first should be named objc_exception_throw and its location should.. i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help if you're not..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how 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 UIActionSheet is not designed.. call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice.. of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone I hope that's as simple as kCCEncrypt kCCDecrypt. iphone objective c encryption nsstring aes share improve this question Since you haven't posted any code it's difficult to know exactly which problems.. include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString and variants thereof access the AppleLanguages key in NSUserDefaults.. 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..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c through NSNotificationCenter in Objective C iphone objective c ios nsnotificationcenter share improve this question @implementation TestClass void dealloc If you don't remove yourself as an observer.. receiveTestNotification selector. By specifying object nil we tell the notification center that we are not interested in who posted the notification. If you provided an actual object rather than nil the..
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 associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone OS 3.2 and is different than the already.. LSHandlerRank key string Owner string key LSItemContentTypes key array string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided.. string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of..
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 and have run through all the pragmatic programmer Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would.. or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using a CATransform3D..
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 feature for me though I guess I could extend it to do so. iphone ios cocoa touch fonts share improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre.. Apache license and put it on github here git github.com zynga FontLabel.git The important files are FontLabel.h and FontLabel.m. It uses some of the code from Genericrich's answer above. Browse the source..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor.. tileSize tweak CALayers cant be prepared 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.. the page in focus so that the PDF image is ready to mask the layer before it starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c I know how I can use them. But how do I create them iphone ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate.. methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd.. self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest.. this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs..
Determining if an iPhone is Jail broken Programatically http://stackoverflow.com/questions/1140856/determining-if-an-iphone-is-jail-broken-programatically if a phone is jail broken or the software running is cracked does anyone know how they do this Are there any libraries iphone objective c ios cocoa touch jailbreak share improve this question Here..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec would be used in C. I've seen them used for implementing static variable based singletons before. Are there other convenient uses I'm missing My take from working with iOS is that ivars have been alost..
http://stackoverflow.com/questions/1305127/free-weather-api Weather API closed Are there any free weather APIs for displaying weather in the iPhone application. iphone weather api ..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation a future revision of the SDK. UIDevice currentDevice setOrientation UIInterfaceOrientationPortrait Are there any documented ways to force the orientation Update I thought I would provide an example as I..
Is there a good tutorial for implementing an augmented reality iPhone application? [closed] http://stackoverflow.com/questions/2084327/is-there-a-good-tutorial-for-implementing-an-augmented-reality-iphone-applicatio there a good tutorial for implementing an augmented reality iPhone application closed Are there any good tutorials or sample applications out there that demonstrate how to make an augmented..
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone it which would be NSSearchPathForDirectoriesInDomains NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve..
Text to speech on iPhone [closed] http://stackoverflow.com/questions/416064/text-to-speech-on-iphone Is there any way we can convert text to speech in an iPhone app Is it possible using the SDK Are there any third party TTS engines available for the iPhone AFAIK Acapela is not yet released iphone..
What work has been done on cross-platform mobile development? [closed] http://stackoverflow.com/questions/51988/what-work-has-been-done-on-cross-platform-mobile-development closed Have any well documented or open source projects targeted iPhone Blackberry and Android Are there other platforms which are better suited to such an endeavor Note that I am particularly asking..
How to show button 'Done' on number pad on iPhone? http://stackoverflow.com/questions/584538/how-to-show-button-done-on-number-pad-on-iphone Input Traits default but users have to switch to number pad every time they input their numbers. Are there any other ways to show a 'Done' button on number pad iphone user input share improve this question..
Open source CoverFlow library for iPhone [closed] http://stackoverflow.com/questions/718984/open-source-coverflow-library-for-iphone source CoverFlow library for iPhone closed Are there any open source CoverFlow like APIs or libraries available for the iPhone I've found one implementation..
Are there any good UIScrollView Tutorials on the net? http://stackoverflow.com/questions/820557/are-there-any-good-uiscrollview-tutorials-on-the-net there any good UIScrollView Tutorials on the net Any good links are highly appreciated This goes to..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition implement this feature but I'm curious about doing it on a start up level. Anyone looked into this Are there any tools out there for us to do this iphone speech recognition voice recording speech to text..
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 to mention stringWithContentsOfURL is deprecated in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration framework to the project but don't worry about including.. 2 Add Apple's version of Reachability.h and Reachability.m to the project you can get those here 3 Add @class Reachability to the .h file of where you are implementing the code 4 Create a couple instances to check in the interface section of the .h file Reachability internetReachable Reachability hostReachable 5 Add.. Add a method in the .h for when the network status updates void checkNetworkStatus NSNotification notice 6 Add #import Reachability.h to the .m file where you are implementing the check 7 In the .m file of where you are implementing the check you can place this in one of the first methods called init or viewWillAppear or..
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 scrollView.frame.size.height 215 50 resize However this doesn't automatically move up or center the lower text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will need a scroll view if the contents you have now does not fit.. However this doesn't automatically move up or center the lower text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will need a scroll view if the contents you have now does not fit in the iPhone screen. If you are adding the scroll view just to make.. iphone objective c ios share improve this question You will need a scroll view if the contents you have now does not fit in the iPhone screen. If you are adding the scroll view just to make the textfield scroll up when keyboard comes up then it's not needed. For showing the textfields without being hidden by the..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw you should be able to debug these exceptions. To do this go to Run Show Breakpoints and create two global breakpoints I do them globally because they are so useful in all my applications . The first should be named objc_exception_throw and its location should be libobjc.A.dylib . The second should be NSException.. to the exception within the debugger. now in this answer i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help if you're not finding it clear. In XCode from the top menu click on Run Show..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how 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 UIActionSheet is not designed to be subclassed nor should you add views to its hierarchy I.. decided to take a different approach. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse it between 5 or 6 different screens where.. itemSelectedatRow and a weak property called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow in tableView didSelectRowAtIndexPath..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone also have to be able to decrypt an encrypted string but I hope that's as simple as kCCEncrypt kCCDecrypt. iphone objective c encryption nsstring aes share improve this question Since you haven't posted any code it's difficult to know exactly which problems you're encountering. However the blog post you link to does.. works for me and seems a bit more straightforward. If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such values. int main int argc const char argv..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language to use a specific language to have the app in a different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString and variants thereof access the AppleLanguages key in NSUserDefaults to determine what the user's settings for preferred.. 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..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c I need a simple example program to send and receive a message through NSNotificationCenter in Objective C iphone objective c ios nsnotificationcenter share improve this question @implementation TestClass void dealloc If you don't remove yourself as an observer the Notification Center will continue to try and send.. to inform us of TestNotification notifications using the receiveTestNotification selector. By specifying object nil we tell the notification center that we are not interested in who posted the notification. If you provided an actual object rather than nil the notification center will only notify you when the notification..
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 apps like Safari or Mail implemented this system for choosing associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone OS 3.2 and is different than the already existing custom URL schemes. You can register your application.. File string key CFBundleTypeRole key string Viewer string key LSHandlerRank key string Owner string key LSItemContentTypes key array string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and.. string key LSItemContentTypes key array string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of showing documents. The LSItemContentTypes key lets you provide..
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 anyonew know if this is possible I've investigated using CALayer and have run through all the pragmatic programmer Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation.. create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's rotation. The trick to get perspective..
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 UILabel subclass doesn't support word wrap which is an essential feature for me though I guess I could extend it to do so. iphone ios cocoa touch fonts share improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre 3.2 you can still use this solution. I created a simple module.. handles loading .ttf files. I released it opensource under the Apache license and put it on github here git github.com zynga FontLabel.git The important files are FontLabel.h and FontLabel.m. It uses some of the code from Genericrich's answer above. Browse the source here http github.com zynga FontLabel tree master share..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints Theres a significant Overhead time drawing a full PDF page to a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my.. CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing a PDF viewer and am rendering a.. a crisp version appears. Im rendering 2 pages each side of the page in focus so that the PDF image is ready to mask the layer before it starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter how small or obvious to improve the performance memory..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c create delegates in Objective C I know how delegates work and I know how I can use them. But how do I create them iphone ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's no special process for creating them.. them you simply define a class that implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd like to implement its delegate's windowDidMove method you.. if self delegate respondsToSelector @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that object. For example a view controller..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now property is deprecated in iOS 5 and above. No alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any ideas how we might handle this problem going forward The.. the defaults database using the NSUserDefaults class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get a new one each time. But you might want..
Determining if an iPhone is Jail broken Programatically http://stackoverflow.com/questions/1140856/determining-if-an-iphone-is-jail-broken-programatically Running a cracked copy of your software Pinch Media can detect if a phone is jail broken or the software running is cracked does anyone know how they do this Are there any libraries iphone objective c ios cocoa touch jailbreak share improve this question Here is one of the ways to detect if your app was cracked http..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color is available in red green and purple. Is there any way to get..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec concept of class and thus have to be used exactly how they would be used in C. I've seen them used for implementing static variable based singletons before. Are there other convenient uses I'm missing My take from working with iOS is that ivars have been alost completely phased out outside of the @synthesize directive and..
http://stackoverflow.com/questions/1305127/free-weather-api Weather API closed Are there any free weather APIs for displaying weather in the iPhone application. iphone weather api share improve this question These are not iPhone specific..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation generates a compiler warning and could disappear with a future revision of the SDK. UIDevice currentDevice setOrientation UIInterfaceOrientationPortrait Are there any documented ways to force the orientation Update I thought I would provide an example as I am not looking for shouldAutorotateToInterfaceOrientation as..
Is there a good tutorial for implementing an augmented reality iPhone application? [closed] http://stackoverflow.com/questions/2084327/is-there-a-good-tutorial-for-implementing-an-augmented-reality-iphone-applicatio there a good tutorial for implementing an augmented reality iPhone application closed Are there any good tutorials or sample applications out there that demonstrate how to make an augmented reality iPhone application iphone camera augmented reality..
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone brittle and dissimiliar to the normal Mac way of doing it which would be NSSearchPathForDirectoriesInDomains NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve this question NSSearchPathForDirectoriesInDomains NSDocumentDirectory..
Text to speech on iPhone [closed] http://stackoverflow.com/questions/416064/text-to-speech-on-iphone to speech on iPhone closed Is there any way we can convert text to speech in an iPhone app Is it possible using the SDK Are there any third party TTS engines available for the iPhone AFAIK Acapela is not yet released iphone core audio share improve this question I don't think iPhone..
What work has been done on cross-platform mobile development? [closed] http://stackoverflow.com/questions/51988/what-work-has-been-done-on-cross-platform-mobile-development work has been done on cross platform mobile development closed Have any well documented or open source projects targeted iPhone Blackberry and Android Are there other platforms which are better suited to such an endeavor Note that I am particularly asking about client side software not web apps though any information..
How to show button 'Done' on number pad on iPhone? http://stackoverflow.com/questions/584538/how-to-show-button-done-on-number-pad-on-iphone the number pad disappear I may do this by remaining the Text Input Traits default but users have to switch to number pad every time they input their numbers. Are there any other ways to show a 'Done' button on number pad iphone user input share improve this question I found an absolutely great solution to this here..
Open source CoverFlow library for iPhone [closed] http://stackoverflow.com/questions/718984/open-source-coverflow-library-for-iphone source CoverFlow library for iPhone closed Are there any open source CoverFlow like APIs or libraries available for the iPhone I've found one implementation that is licensed per application however I'd much..
Are there any good UIScrollView Tutorials on the net? http://stackoverflow.com/questions/820557/are-there-any-good-uiscrollview-tutorials-on-the-net there any good UIScrollView Tutorials on the net Any good links are highly appreciated This goes to community wiki. iphone uikit uiscrollview share improve..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition voice recognition. I've seen big companies like Google etc implement this feature but I'm curious about doing it on a start up level. Anyone looked into this Are there any tools out there for us to do this iphone speech recognition voice recording speech to text share improve this question OpenEars looks promising.....
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 in 3.0 And if so what is a better way to accomplish this iphone objective c ios cocoa touch reachability share improve this question METHOD 1 Use a simple ARC and GCD compatible class to do it 1 Add SystemConfiguration framework.. and Reachability.m to the project you can get those here 3 Add @class Reachability to the .h file of where you are implementing the code 4 Create a couple instances to check in the interface section of the .h file Reachability internetReachable.. status updates void checkNetworkStatus NSNotification notice 6 Add #import Reachability.h to the .m file where you are implementing the check 7 In the .m file of where you are implementing the check you can place this in one of the first methods..
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 215 50 resize However this doesn't automatically move up or center the lower text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will need a scroll view.. up or center the lower text fields in the visible area which is what I would really like. iphone objective c ios share improve this question You will need a scroll view if the contents you have now does not fit in the iPhone screen. If you.. this question You will need a scroll view if the contents you have now does not fit in the iPhone screen. If you are adding the scroll view just to make the textfield scroll up when keyboard comes up then it's not needed. For showing the..
How to add a breakpoint to objc_exception_throw? http://stackoverflow.com/questions/1163981/how-to-add-a-breakpoint-to-objc-exception-throw exceptions. To do this go to Run Show Breakpoints and create two global breakpoints I do them globally because they are so useful in all my applications . The first should be named objc_exception_throw and its location should be libobjc.A.dylib.. now in this answer i want to ask how do i add location mentioned objective c iphone xcode debugging memory leaks share improve this question I think Brad's answer is pretty clear hopefully this can help if you're not finding it clear. In..
Add UIPickerView & a Button in Action sheet - How? http://stackoverflow.com/questions/1262574/add-uipickerview-a-button-in-action-sheet-how 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 UIActionSheet is not designed to be subclassed nor.. I replaced the call to show the action sheet with a modal view controller containing a simple tableview. There are many ways to accomplish this. Here's one way that I just implemented in a current project. It's nice because I can reuse.. called delegate of type id SimpleTableViewControllerDelegate . This is how we will pass the selection back to the parent controller. In SimpleTableViewController.m implement the tableview data source and delegate methods calling itemSelectedatRow..
AES Encryption for an NSString on the iPhone http://stackoverflow.com/questions/1400246/aes-encryption-for-an-nsstring-on-the-iphone encrypted string but I hope that's as simple as kCCEncrypt kCCDecrypt. iphone objective c encryption nsstring aes share improve this question Since you haven't posted any code it's difficult to know exactly which problems you're encountering... If you include their code for the NSData category you can write something like this Note The printf calls are only for demonstrating the state of the data at various points in a real application it wouldn't make sense to print such..
How to force NSLocalizedString to use a specific language http://stackoverflow.com/questions/1669645/how-to-force-nslocalizedstring-to-use-a-specific-language have the app in a different language than the device iphone objective c cocoa localization internationalization share improve this question NSLocalizedString and variants thereof access the AppleLanguages key in NSUserDefaults to determine.. 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..
Send and receive messages through NSNotificationCenter in Objective-C? [closed] http://stackoverflow.com/questions/2191594/send-and-receive-messages-through-nsnotificationcenter-in-objective-c and receive a message through NSNotificationCenter in Objective C iphone objective c ios nsnotificationcenter share improve this question @implementation TestClass void dealloc If you don't remove yourself as an observer the Notification.. using the receiveTestNotification selector. By specifying object nil we tell the notification center that we are not interested in who posted the notification. If you provided an actual object rather than nil the notification center..
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 this system for choosing associated applications or will they do nothing as before iphone ios cocoa touch ipad share improve this question File type handling is new with iPhone OS 3.2 and is different than the already existing custom URL.. Viewer string key LSHandlerRank key string Owner string key LSItemContentTypes key array string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as.. string com.sunsetlakesoftware.molecules.pdb string string org.gnu.gnu zip archive string array dict array Two images are provided that will be used as icons for the supported types in Mail and other applications capable of showing documents...
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 using CALayer and have run through all the pragmatic programmer Core Animation podcasts but I'm still no clearer on how to create this kind of transform on an iPhone. Any help pointers or example code snippets would be really appreciated.. Any help pointers or example code snippets would be really appreciated iphone ios cocoa touch core animation share improve this question As Ben said you'll need to work with the UIView's layer using a CATransform3D to perform the layer's..
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 wrap which is an essential feature for me though I guess I could extend it to do so. iphone ios cocoa touch fonts share improve this question Edit As of iOS 3.2 this functionality is built in. If you need to support pre 3.2 you can still.. opensource under the Apache license and put it on github here git github.com zynga FontLabel.git The important files are FontLabel.h and FontLabel.m. It uses some of the code from Genericrich's answer above. Browse the source here http github.com..
Fast and Lean PDF Viewer for iPhone / iPad / iOs - tips and hints? http://stackoverflow.com/questions/3889634/fast-and-lean-pdf-viewer-for-iphone-ipad-ios-tips-and-hints a full PDF page to a CALayer individual tiles can be seen rendering even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage.. even with a tileSize tweak CALayers cant be prepared ahead of time rendered off screen . Generally PDF viewers are pretty heavy on memory too. Even monitor the memory usage of apple's zoomable PDF example. In my current project I'm developing.. 2 pages each side of the page in focus so that the PDF image is ready to mask the layer before it starts drawing.Pages are destroyed again when they are 2 pages away from the focused page. Does anyone have any insights no matter how small or obvious..
How do I create delegates in Objective-C? http://stackoverflow.com/questions/626898/how-do-i-create-delegates-in-objective-c how delegates work and I know how I can use them. But how do I create them iphone ios objective c cocoa delegates share improve this question An Objective C delegate is just an object that has been assigned as a delegate of another. There's.. implements the delegate methods you're interested in. Though with delegates that use a formal protocol you must declare your delegate to implement that protocol see below. For example suppose you have an NSWindow. If you'd like to implement.. @selector windowDidMove self delegate windowDidMove notification The delegate property itself is typically declared weak in ARC or assign pre ARC to avoid retain loops since the delegate of an object often holds a strong reference to that..
UIDevice uniqueIdentifier Deprecated - What To Do Now? http://stackoverflow.com/questions/6993325/uidevice-uniqueidentifier-deprecated-what-to-do-now iOS 5 and above. No alternative method or property appears to be available or forthcoming. Many of our existing apps are tightly dependent on this property for uniquely identifying a particular device. Can anyone suggest any ideas how we might.. class. However this value won't be the same if a user uninstalls and re installs the app. iphone ios ipad share improve this question A UUID created by CFUUIDCreate is unique if a user uninstalls and re installs the app you will get..
iOS Image Orientation has Strange Behavior http://stackoverflow.com/questions/10600613/ios-image-orientation-has-strange-behavior display it. Windows however is not smart enough to read the EXIF data and therefore displays the image improperly . Are my assumptions correct iphone objective c ios share improve this question I did R D on it and discovered every image..
Memory Management in Objective-C [duplicate] http://stackoverflow.com/questions/106627/memory-management-in-objective-c autoreleasing For instance is it completely illegal to use a pointer to an Objective C object and treat it as an array Are you forced to use NSArray and NSMutableArray for data structures I know these are pretty newbie questions thanks for any..
Determining if an iPhone is Jail broken Programatically http://stackoverflow.com/questions/1140856/determining-if-an-iphone-is-jail-broken-programatically Pinch Media can detect if a phone is jail broken or the software running is cracked does anyone know how they do this Are there any libraries iphone objective c ios cocoa touch jailbreak share improve this question Here is one of the ways..
Install Simulator SDK 4.3 to Xcode 4.4 on Mountain Lion http://stackoverflow.com/questions/11651773/install-simulator-sdk-4-3-to-xcode-4-4-on-mountain-lion could not find the sdk. The sdk may need to be reinstalled which means it couldn't run What's wrong with xcode 4.4 GM Are there any ideas about how to solve this kind of problem iphone ios xcode sdk ios simulator share improve this question.. string key name key string iOS 4.3 Simulator string key userInfo key dict key InstalledIfAllPathsArePresent key array string DEVELOPER Platforms iPhoneSimulator.platform Developer SDKs iPhoneSimulator4.3.sdk string array..
MKPinAnnotationView: Are there more than three colors available? http://stackoverflow.com/questions/1185611/mkpinannotationview-are-there-more-than-three-colors-available Are there more than three colors available According to the Apple docs MKPinAnnotationView's pin color is available in red..
Declaration/definition of variables locations in ObjectiveC? http://stackoverflow.com/questions/12632285/declaration-definition-of-variables-locations-in-objectivec exactly how they would be used in C. I've seen them used for implementing static variable based singletons before. Are there other convenient uses I'm missing My take from working with iOS is that ivars have been alost completely phased out..
Text-to-speech libraries for iPhone [duplicate] http://stackoverflow.com/questions/12839671/text-to-speech-libraries-for-iphone on iPhone How do I get started with text to speech conversion in iPhone I want to read the text typed by the user. Are there any available libraries or demos I have gone through some of them but I didn't understand where to start it from...
http://stackoverflow.com/questions/1305127/free-weather-api Weather API closed Are there any free weather APIs for displaying weather in the iPhone application. iphone weather api share improve this question..
iOS: Open Source VoIP/SIP Objective-C Code http://stackoverflow.com/questions/1493050/ios-open-source-voip-sip-objective-c-code of writing an iPhone App to access our internal VoIP SIP systems. I've never coded anything close to VoIP before. Are there any open source VoIP SIP libraries or examples in C or Objective C An iOS App that I can skin and add our required..
Is there a documented way to set the iPhone orientation? http://stackoverflow.com/questions/181780/is-there-a-documented-way-to-set-the-iphone-orientation disappear with a future revision of the SDK. UIDevice currentDevice setOrientation UIInterfaceOrientationPortrait Are there any documented ways to force the orientation Update I thought I would provide an example as I am not looking for shouldAutorotateToInterfaceOrientation..
Is there a good tutorial for implementing an augmented reality iPhone application? [closed] http://stackoverflow.com/questions/2084327/is-there-a-good-tutorial-for-implementing-an-augmented-reality-iphone-applicatio there a good tutorial for implementing an augmented reality iPhone application closed Are there any good tutorials or sample applications out there that demonstrate how to make an augmented reality iPhone application..
What's the best way to find the user's Documents directory on an iPhone? http://stackoverflow.com/questions/272544/whats-the-best-way-to-find-the-users-documents-directory-on-an-iphone Mac way of doing it which would be NSSearchPathForDirectoriesInDomains NSDocumentsDirectory NSUserDomainMask YES Are there any particular reasons to use one over the other iphone objective c cocoa touch share improve this question NSSearchPathForDirectoriesInDomains..
Text to speech on iPhone [closed] http://stackoverflow.com/questions/416064/text-to-speech-on-iphone speech on iPhone closed Is there any way we can convert text to speech in an iPhone app Is it possible using the SDK Are there any third party TTS engines available for the iPhone AFAIK Acapela is not yet released iphone core audio share..
What work has been done on cross-platform mobile development? [closed] http://stackoverflow.com/questions/51988/what-work-has-been-done-on-cross-platform-mobile-development mobile development closed Have any well documented or open source projects targeted iPhone Blackberry and Android Are there other platforms which are better suited to such an endeavor Note that I am particularly asking about client side software..
How to show button 'Done' on number pad on iPhone? http://stackoverflow.com/questions/584538/how-to-show-button-done-on-number-pad-on-iphone by remaining the Text Input Traits default but users have to switch to number pad every time they input their numbers. Are there any other ways to show a 'Done' button on number pad iphone user input share improve this question I found an..
Are the Core Image filters in iOS 5.0 fast enough for realtime video processing? http://stackoverflow.com/questions/6625888/are-the-core-image-filters-in-ios-5-0-fast-enough-for-realtime-video-processing the Core Image filters in iOS 5.0 fast enough for realtime video processing Now that Apple has ported the Core Image framework..
Open source CoverFlow library for iPhone [closed] http://stackoverflow.com/questions/718984/open-source-coverflow-library-for-iphone source CoverFlow library for iPhone closed Are there any open source CoverFlow like APIs or libraries available for the iPhone I've found one implementation that is licensed..
Are there any good UIScrollView Tutorials on the net? http://stackoverflow.com/questions/820557/are-there-any-good-uiscrollview-tutorials-on-the-net there any good UIScrollView Tutorials on the net Any good links are highly appreciated This goes to community wiki. iphone..
iPhone App ??#160;Add voice recognition? [closed] http://stackoverflow.com/questions/942312/iphone-app-add-voice-recognition like Google etc implement this feature but I'm curious about doing it on a start up level. Anyone looked into this Are there any tools out there for us to do this iphone speech recognition voice recording speech to text share improve this..
http://stackoverflow.com/questions/2078016/iphone-memory-management initWithPatternImage UIImage imageNamed backgroundImageName ... do some more initialization stuff ... IF THE FOLLOWING ARE RELEASED THE APP WILL CRASH backgroundImageName release language release Why would releasing the backgroundImageName and..
Problem with cocos2D for iPhone and touch detection http://stackoverflow.com/questions/377785/problem-with-cocos2d-for-iphone-and-touch-detection WIDTH float labelYHeight labelY WIDTH if labelX cLoc.x labelY cLoc.y labelXWidth cLoc.x labelYHeight cLoc.y NSLog @ WE ARE TOUCHED AND I AM A @ self.labelString return kEventHandled else return kEventIgnored Note that the cocos2d library has a..
iPhone : OpenGL ES : Detecting if you have tapped a object (cube) on screen http://stackoverflow.com/questions/4365856/iphone-opengl-es-detecting-if-you-have-tapped-a-object-cube-on-screen the rect fingerSquish if CGRectContainsPoint fingerSquish pos NSLog @ WOOP YOU HAVE FOUND THE TOUCHED CUBEY. YOU ARE DONE. this item is the cube being touched. make the cube change color or something to test it. I also trying out gluUnproject..
Tap pressure strength detection using accelerometer http://stackoverflow.com/questions/5179426/tap-pressure-strength-detection-using-accelerometer and the following disclaimer in the documentation and or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES.. WARRANTIES INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT INDIRECT INCIDENTAL SPECIAL EXEMPLARY OR CONSEQUENTIAL.. IN CONTRACT STRICT LIABILITY OR TORT INCLUDING NEGLIGENCE OR OTHERWISE ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. #import UIKit UIKit.h #define CPBPressureNone 0.0f #define CPBPressureLight..
iPhone SQLITE Select statement with variables http://stackoverflow.com/questions/6699265/iphone-sqlite-select-statement-with-variables description i and cash i addOne addTwo addThree WORKS FINE IF ALL VARIABLES HAVE VALUES BUT DOES NOTHING IF VARIABLES ARE EMPTY const char sql querystring UTF8String sqlite3_stmt selectstmt if sqlite3_prepare_v2 database sql 1 selectstmt NULL..
Scrolling with two fingers with a UIScrollView http://stackoverflow.com/questions/787212/scrolling-with-two-fingers-with-a-uiscrollview
iPhone app Update Vs new version http://stackoverflow.com/questions/8462647/iphone-app-update-vs-new-version all the files in the bundle are downloaded and copied in the previous existing bundle but OLD FILES OR COMPONENTS ARE NOT DELETED or not all are deleted . So the final bundle IS NOT equal to the bundle of a fresh installation of the new version...
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 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 the view's component..
steps for creating UIScrollView with Interface Builder http://stackoverflow.com/questions/9118796/steps-for-creating-uiscrollview-with-interface-builder
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