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2014/10/15 ¤U¤È 10:09:54
iphone Programming Glossary: goodiPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention 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..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool especially..
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel look down the old answer. Now I am just being lazy so p _label setText text There is a couple of good introductory blog posts here from guys at invasivecode that explain with more examples uses of NSAttributedString..
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 with a UIWebView but this cant give the performance and functionality that you would expect from a good PDF viewer. You can draw a PDF page to a CALayer or to a UIImage . Apple even have sample code to show..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone be a gradient as opposed to a true color. Using a graphics program to create desired look is no good as the text may vary depending on data returned from a server. Does anyone know the quickest way to..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file a PDF using various objects from views throughout my app. I am interested to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content do I size a UITextView to its content Is there a good way to adjust the size of a UITextView to conform to its content Say for instance I have a UITextView.. contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust..
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 tremendously in the next year or two. Google for HTML5 apps for information and resources. A good introduction to HTML5 is the online book Dive Into HTML5 by Mark Pilgrim . This is a work in progress..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good chance that this flag is being saved to the exif data in the uploaded jpeg image but the program you..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers c iphone cocoa touch delegates key value observing share improve this question These are good questions and its great to see that you're doing this research and seem concerned with learning how..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown In trying to think of a situation where suppression of this warning would be necessary and good code design I'm coming up blank. Someone please share if they have had an experience where silencing..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone there a good charting library for iPhone closed I have a need to render and display charts bar charts for now but.. app I'm working on. I've done some looking around and it doesn't look like there are any really good mature charting libraries for iPhone yet. I've also looked for something written for Cocoa on the Mac.. this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring interface. In general en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data..
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring NULL CFStringRef unencodedString NULL CFStringRef @ ' @ # kCFStringEncodingUTF8 Some good reading about the subject Objective c iPhone percent encode a string Objective C url encoding http cybersam.com..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s. See this SO question for example or this article on iPhoneDeveloperTips.com..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention names. Even in Apple sample 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..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c @synthesize myStringProperty _myStringProperty Should I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested Objective C 2.0 practice is to..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel results with a bit more of code. Interested people please look down the old answer. Now I am just being lazy so p _label setText text There is a couple of good introductory blog posts here from guys at invasivecode that explain with more examples uses of NSAttributedString look for Introduction to NSAttributedString for..
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 about drawing PDF's. Yes you can render PDF's very easily with a UIWebView but this cant give the performance and functionality that you would expect from a good PDF viewer. You can draw a PDF page to a CALayer or to a UIImage . Apple even have sample code to show how draw a large PDF in a Zoomable UIScrollview But the same..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone 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 desired look is no good as the text may vary depending on data returned from a server. Does anyone know the quickest way to tackle this Your thoughts are greatly appreciated. iphone ios..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file drawing a PDF file. I would like to programmatically create a PDF using various objects from views throughout my app. I am interested to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial but it was mostly written in C. Looking for more Objective..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content do I size a UITextView to its content Is there a good way to adjust the size of a UITextView to conform to its content Say for instance I have a UITextView that contains one line of text Hello world I then add another.. to its content Say for instance I have a UITextView that contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust the parent view accordingly As another example look at..
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 support for this is patchy at the moment but is likely to improve tremendously in the next year or two. Google for HTML5 apps for information and resources. A good introduction to HTML5 is the online book Dive Into HTML5 by Mark Pilgrim . This is a work in progress but sufficiently complete to be useful. share improve this..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload this question A UIImage has a property imageOrientation which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good chance that this flag is being saved to the exif data in the uploaded jpeg image but the program you use to view it is not honoring that flag. To rotate the UIImage..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers example would be awfully helpful here if possible. objective c iphone cocoa touch delegates key value observing share improve this question These are good questions and its great to see that you're doing this research and seem concerned with learning how to do it right instead of just hacking it together. First I..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown at the source but don't have a reference right now. Suppression In trying to think of a situation where suppression of this warning would be necessary and good code design I'm coming up blank. Someone please share if they have had an experience where silencing this warning was necessary and the above doesn't handle things..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone there a good charting library for iPhone closed I have a need to render and display charts bar charts for now but more types may be needed later in an iPhone app I'm working.. charts for now but more types may be needed later in an iPhone app I'm working on. I've done some looking around and it doesn't look like there are any really good mature charting libraries for iPhone yet. I've also looked for something written for Cocoa on the Mac that can be adapted but haven't found anything great yet... iphone cocoa touch cocoa charts core plot share improve this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop systems but its design has included iPhone support from the..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring You can however get network statistics for each network interface. In general en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data ifi_obytes and ifa_data ifi_ibytes are stored from previous..
http://stackoverflow.com/questions/8088473/url-encode-an-nsstring encodedString NSString CFURLCreateStringByAddingPercentEscapes NULL CFStringRef unencodedString NULL CFStringRef @ ' @ # kCFStringEncodingUTF8 Some good reading about the subject Objective c iPhone percent encode a string Objective C url encoding http cybersam.com programming proper url percent encoding in ios https..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud the UIImage imageNamed FUD I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s. See this SO question for example or this article on iPhoneDeveloperTips.com UIImage 's imageNamed method used to leak so..
iPhone ivar naming convention [duplicate] http://stackoverflow.com/questions/2114587/iphone-ivar-naming-convention 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..
EXC_BAD_ACCESS signal received http://stackoverflow.com/questions/327082/exc-bad-access-signal-received be released and show up as bad access errors when running on the device. The best way to track these things down and a good idea anyway even if there are no apparent problems is to run the app in the Instruments tool especially with the Leaks option...
Prefixing property names with an underscore in Objective C [duplicate] http://stackoverflow.com/questions/3521254/prefixing-property-names-with-an-underscore-in-objective-c Should I get over my aversion to the underscore because that is the one way it should be done is there a good reason for this style being the preferred one iphone objective c coding style share improve this question Current suggested..
Bold & Non-Bold Text In A Single UILabel? http://stackoverflow.com/questions/3586871/bold-non-bold-text-in-a-single-uilabel people please look down the old answer. Now I am just being lazy so p _label setText text There is a couple of good introductory blog posts here from guys at invasivecode that explain with more examples uses of NSAttributedString look for..
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's very easily with a UIWebView but this cant give the performance and functionality that you would expect from a good PDF viewer. You can draw a PDF page to a CALayer or to a UIImage . Apple even have sample code to show how draw a large..
Gradients on UIView and UILabels On iPhone [duplicate] http://stackoverflow.com/questions/422066/gradients-on-uiview-and-uilabels-on-iphone the back ground must be a gradient as opposed to a true color. Using a graphics program to create desired look is no good as the text may vary depending on data returned from a server. Does anyone know the quickest way to tackle this Your thoughts..
iOS SDK - Programmatically generate a PDF file http://stackoverflow.com/questions/4362734/ios-sdk-programmatically-generate-a-pdf-file create a PDF using various objects from views throughout my app. I am interested to know if there are any good PDF tutorials around for the iOS SDK maybe a drop in library. I've seen this tutorial PDF Creation Tutorial but it was mostly..
How do I size a UITextView to its content? http://stackoverflow.com/questions/50467/how-do-i-size-a-uitextview-to-its-content do I size a UITextView to its content Is there a good way to adjust the size of a UITextView to conform to its content Say for instance I have a UITextView that contains one.. have a UITextView that contains one line of text Hello world I then add another line of text Goodbye world Is there a good way in Cocoa Touch to get the rect that will hold all of the lines in the text view so that I can adjust the parent view..
iOS UIImagePickerController result image orientation after upload http://stackoverflow.com/questions/5427656/ios-uiimagepickercontroller-result-image-orientation-after-upload imageOrientation which instructs the UIImageView and other UIImage consumers to rotate the raw image data. There's a good chance that this flag is being saved to the exif data in the uploaded jpeg image but the program you use to view it is not..
What's the best way to communicate between view controllers? http://stackoverflow.com/questions/569940/whats-the-best-way-to-communicate-between-view-controllers if possible. objective c iphone cocoa touch delegates key value observing share improve this question These are good questions and its great to see that you're doing this research and seem concerned with learning how to do it right instead..
Create singleton using GCD's dispatch_once in Objective C http://stackoverflow.com/questions/5720029/create-singleton-using-gcds-dispatch-once-in-objective-c
performSelector may cause a leak because its selector is unknown http://stackoverflow.com/questions/7017281/performselector-may-cause-a-leak-because-its-selector-is-unknown right now. Suppression In trying to think of a situation where suppression of this warning would be necessary and good code design I'm coming up blank. Someone please share if they have had an experience where silencing this warning was necessary..
Is there a good charting library for iPhone? [closed] http://stackoverflow.com/questions/769749/is-there-a-good-charting-library-for-iphone there a good charting library for iPhone closed I have a need to render and display charts bar charts for now but more types may be.. later in an iPhone app I'm working on. I've done some looking around and it doesn't look like there are any really good mature charting libraries for iPhone yet. I've also looked for something written for Cocoa on the Mac that can be adapted.. core plot share improve this question One of the many factors that motivated the Core Plot project was the lack of good plotting frameworks on the iPhone. Core Plot also encompases many other use cases including desktop systems but its design..
iPhone Data Usage Tracking/Monitoring http://stackoverflow.com/questions/7946699/iphone-data-usage-tracking-monitoring for each network interface. In general en0 is your Wi Fi interface and pdp_ip0 is your WWAN interface. There is no good way to get information wifi cellular network data since particular date time data statistic ifa_data ifi_obytes and ifa_data..
Dispelling the UIImage imageNamed: FUD http://stackoverflow.com/questions/924740/dispelling-the-uiimage-imagenamed-fud imageNamed FUD I see a lot of people saying imageNamed is bad but equal numbers of people saying the performance is good especially when rendering UITableView s. See this SO question for example or this article on iPhoneDeveloperTips.com UIImage..
how to get the message when receiving the “kCTMessageReceivedNotification” notification on IOS5 http://stackoverflow.com/questions/10681995/how-to-get-the-message-when-receiving-the-kctmessagereceivednotification-notif there. Or just copy the sms.db to your computer and browse it with something like the Firefox SQLiteManager plugin . Good luck Update some information from a question I posted on multi process SQLite thread safety on iOS share improve this answer..
iphone Core Data Unresolved error while saving http://stackoverflow.com/questions/1283960/iphone-core-data-unresolved-error-while-saving
What is the second parameter of NSLocalizedString()? http://stackoverflow.com/questions/1442822/what-is-the-second-parameter-of-nslocalizedstring depending on how formal or informal the Hello World phrase needs to be in that language What's up World Yo World Good Day World etc. . You can add a string in the comment field to hint this usage to the translator who will one would presume..
UIViewController. viewDidLoad vs. viewWillAppear: What is the proper division of labor? http://stackoverflow.com/questions/1579550/uiviewcontroller-viewdidload-vs-viewwillappear-what-is-the-proper-division-of your networking which may take a second or two or may even fail who knows you can populate the view with your data. Good examples on how this could be done can be seen in various twitter clients. For example when you view the author detail page..
http://stackoverflow.com/questions/1656124/mpmediaitems-raw-song-data
http://stackoverflow.com/questions/2032826/property-synthesize
iPhone UIWebView width does not fit after zooming operation + UIInterfaceOrientation change http://stackoverflow.com/questions/2890673/iphone-uiwebview-width-does-not-fit-after-zooming-operation-uiinterfaceorienta a webpage e.g. http stackoverflow.com Rotating the device shows that UIWebView is auto resized to fit the width. Good. Incorrect Zoom into the page and zoom out. Now rotating the device shows UIWebView in a weird width in one of the orientation..
Play local notification default sound when displaying UIAlertView? http://stackoverflow.com/questions/3277811/play-local-notification-default-sound-when-displaying-uialertview when displaying a UIAlertView. Any ideas iphone cocoa touch ios4 push notification share improve this question Good question. Ideally there would be a way of selecting a system sound using AudioServices. However the following statement..
Launch an app from a link in an SMS http://stackoverflow.com/questions/3512664/launch-an-app-from-a-link-in-an-sms done Suggestions and sample codes greatly appreciated... Thanks in advance iphone sms share improve this question Good news it is possible and quite simple really easy in fact Take a look at this tutorial Update it seems that the SMS app doesn't..
Xcode 'CodeSign error: code signing is required' http://stackoverflow.com/questions/3804191/xcode-codesign-error-code-signing-is-required
A valid provisioning profile for this executable was not found for debug mode http://stackoverflow.com/questions/4167466/a-valid-provisioning-profile-for-this-executable-was-not-found-for-debug-mode
http://stackoverflow.com/questions/4238760/how-to-make-a-uitableviewcell-with-a-uitextview-inside-that-dynamically-adjust
Building openears compatible language model http://stackoverflow.com/questions/5220661/building-openears-compatible-language-model
Turning an iPhone or iPod into a wireless webcam http://stackoverflow.com/questions/5258696/turning-an-iphone-or-ipod-into-a-wireless-webcam
Text-to-speech on iPhone [closed] http://stackoverflow.com/questions/6347072/text-to-speech-on-iphone offline TTS I've heard of. Flite Super low quality not worth using Sucks as is. OE improved on it a lot. Google TTS Good but requires a network connection Not ideal iphone objective c cocoa touch text to speech share improve this question.. this question I've looked into this and unfortunately the options are either very expensive or bad quality Acapela Good quality but expensive. Ivona iOS version and price available on request. VoiceText from NeoSpeech. Price available on request...
MKAnnotationView - Lock custom annotation view to pin on location updates http://stackoverflow.com/questions/6392931/mkannotationview-lock-custom-annotation-view-to-pin-on-location-updates
Last In-First Out Stack with GCD? http://stackoverflow.com/questions/7567827/last-in-first-out-stack-with-gcd
iOS background application network access http://stackoverflow.com/questions/9613357/ios-background-application-network-access and very quick network updates in a background process iphone ios networking location share improve this question Good point according to the Apple documentation only the following usages are allowed in background and each service should be..
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